Bump to v4.17.21

This prevents potential ReDoS attacks using `_.toNumber` and `_.trim*`
as potential attack vectors.

Closes #5065.

.editorconfig

@@ -8,7 +8,5 @@ charset = utf-8
 end_of_line = lf
 indent_size = 2
 indent_style = space
-trim_trailing_whitespace = true
-
-[**.{html,js,json,md}]
 insert_final_newline = true
+trim_trailing_whitespace = true

.github/CONTRIBUTING.md

@@ -0,0 +1,78 @@
+# Contributing to Lodash
+
+Contributions are always welcome. Before contributing please read the
+[code of conduct](https://js.foundation/community/code-of-conduct) &
+[search the issue tracker](https://github.com/lodash/lodash/issues); your issue
+may have already been discussed or fixed in `master`. To contribute,
+[fork](https://help.github.com/articles/fork-a-repo/) Lodash, commit your changes,
+& [send a pull request](https://help.github.com/articles/using-pull-requests/).
+
+## Feature Requests
+
+Feature requests should be submitted in the
+[issue tracker](https://github.com/lodash/lodash/issues), with a description of
+the expected behavior & use case, where they’ll remain closed until sufficient interest,
+[e.g. :+1: reactions](https://help.github.com/articles/about-discussions-in-issues-and-pull-requests/),
+has been [shown by the community](https://github.com/lodash/lodash/issues?q=label%3A%22votes+needed%22+sort%3Areactions-%2B1-desc).
+Before submitting a request, please search for similar ones in the
+[closed issues](https://github.com/lodash/lodash/issues?q=is%3Aissue+is%3Aclosed+label%3Aenhancement).
+
+## Pull Requests
+
+For additions or bug fixes you should only need to modify `lodash.js`. Include
+updated unit tests in the `test` directory as part of your pull request. Don’t
+worry about regenerating the `dist/` or `doc/` files.
+
+Before running the unit tests you’ll need to install, `npm i`,
+[development dependencies](https://docs.npmjs.com/files/package.json#devdependencies).
+Run unit tests from the command-line via `npm test`, or open `test/index.html` &
+`test/fp.html` in a web browser. The [Backbone](http://backbonejs.org/) &
+[Underscore](http://underscorejs.org/) test suites are included as well.
+
+## Contributor License Agreement
+
+Lodash is a member of the [Open JS Foundation](https://openjsf.org/).
+As such, we request that all contributors sign our
+[contributor license agreement (CLA)](https://js.foundation/CLA/).
+
+For more information about CLAs, please check out Alex Russell’s excellent post,
+[“Why Do I Need to Sign This?”](https://infrequently.org/2008/06/why-do-i-need-to-sign-this/).
+
+## Coding Guidelines
+
+In addition to the following guidelines, please follow the conventions already
+established in the code.
+
+- **Spacing**:<br>
+  Use two spaces for indentation. No tabs.
+
+- **Naming**:<br>
+  Keep variable & method names concise & descriptive.<br>
+  Variable names `index`, `array`, & `iteratee` are preferable to
+  `i`, `arr`, & `fn`.
+
+- **Quotes**:<br>
+  Single-quoted strings are preferred to double-quoted strings; however,
+  please use a double-quoted string if the value contains a single-quote
+  character to avoid unnecessary escaping.
+
+- **Comments**:<br>
+  Please use single-line comments to annotate significant additions, &
+  [JSDoc-style](http://www.2ality.com/2011/08/jsdoc-intro.html) comments for
+  functions.
+
+Guidelines are enforced using [JSCS](https://www.npmjs.com/package/jscs):
+```bash
+$ npm run style
+```
+
+## Tips
+
+You can opt-in to a pre-push git hook by adding an `.opt-in` file to the root of
+the project containing:
+```txt
+pre-push
+```
+
+With that, when you `git push`, the pre-push git hook will trigger and execute
+`npm run validate`.

.gitignore

@@ -1,7 +1,4 @@
 .DS_Store
-*.custom.*
 *.log
-*.map
-lodash.compat.min.js
-coverage
+doc/*.html
 node_modules

.jscsrc

@@ -1,97 +1,97 @@
 {
-    "maxErrors": "2000",
-    "maximumLineLength": {
-      "value": 180,
-      "allExcept": ["comments", "functionSignature", "regex"]
-    },
-    "requireCurlyBraces": [
-        "if",
-        "else",
-        "for",
-        "while",
-        "do",
-        "try",
-        "catch"
-    ],
-    "requireOperatorBeforeLineBreak": [
-        "=",
-        "+",
-        "-",
-        "/",
-        "*",
-        "==",
-        "===",
-        "!=",
-        "!==",
-        ">",
-        ">=",
-        "<",
-        "<="
-    ],
-    "requireSpaceAfterKeywords": [
-      "if",
-      "else",
-      "for",
-      "while",
-      "do",
-      "switch",
-      "return",
-      "try",
-      "catch"
-    ],
-    "requireSpaceBeforeBinaryOperators": [
-        "=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=",
-        "&=", "|=", "^=", "+=",
+  "maxErrors": "2000",
+  "maximumLineLength": {
+    "value": 180,
+    "allExcept": ["comments", "functionSignature", "regex"]
+  },
+  "requireCurlyBraces": [
+    "if",
+    "else",
+    "for",
+    "while",
+    "do",
+    "try",
+    "catch"
+  ],
+  "requireOperatorBeforeLineBreak": [
+    "=",
+    "+",
+    "-",
+    "/",
+    "*",
+    "==",
+    "===",
+    "!=",
+    "!==",
+    ">",
+    ">=",
+    "<",
+    "<="
+  ],
+  "requireSpaceAfterKeywords": [
+    "if",
+    "else",
+    "for",
+    "while",
+    "do",
+    "switch",
+    "return",
+    "try",
+    "catch"
+  ],
+  "requireSpaceBeforeBinaryOperators": [
+    "=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=",
+    "&=", "|=", "^=",
 
-        "+", "-", "*", "/", "%", "<<", ">>", ">>>", "&",
-        "|", "^", "&&", "||", "===", "==", ">=",
-        "<=", "<", ">", "!=", "!=="
-    ],
-    "requireSpacesInFunctionExpression": {
-        "beforeOpeningCurlyBrace": true
-    },
-    "requireCamelCaseOrUpperCaseIdentifiers": true,
-    "requireDotNotation": { "allExcept": ["keywords"] },
-    "requireEarlyReturn": true,
-    "requireLineFeedAtFileEnd": true,
-    "requireSemicolons": true,
-    "requireSpaceAfterBinaryOperators": true,
-    "requireSpacesInConditionalExpression": true,
-    "requireSpaceBeforeObjectValues": true,
-    "requireSpaceBeforeBlockStatements": true,
-    "requireSpacesInForStatement": true,
+    "+", "-", "*", "/", "%", "<<", ">>", ">>>", "&",
+    "|", "^", "&&", "||", "===", "==", ">=",
+    "<=", "<", ">", "!=", "!=="
+  ],
+  "requireSpacesInFunctionExpression": {
+    "beforeOpeningCurlyBrace": true
+  },
+  "requireCamelCaseOrUpperCaseIdentifiers": true,
+  "requireDotNotation": { "allExcept": ["keywords"] },
+  "requireEarlyReturn": true,
+  "requireLineFeedAtFileEnd": true,
+  "requireSemicolons": true,
+  "requireSpaceAfterBinaryOperators": true,
+  "requireSpacesInConditionalExpression": true,
+  "requireSpaceBeforeObjectValues": true,
+  "requireSpaceBeforeBlockStatements": true,
+  "requireSpacesInForStatement": true,
 
-    "validateIndentation": 2,
-    "validateParameterSeparator": ", ",
-    "validateQuoteMarks": { "mark": "'", "escape": true },
+  "validateIndentation": 2,
+  "validateParameterSeparator": ", ",
+  "validateQuoteMarks": { "mark": "'", "escape": true },
 
-    "disallowSpacesInAnonymousFunctionExpression": {
-        "beforeOpeningRoundBrace": true
-    },
-    "disallowSpacesInFunctionDeclaration": {
-        "beforeOpeningRoundBrace": true
-    },
-    "disallowSpacesInFunctionExpression": {
-        "beforeOpeningRoundBrace": true
-    },
-    "disallowKeywords": ["with"],
-    "disallowMixedSpacesAndTabs": true,
-    "disallowMultipleLineBreaks": true,
-    "disallowMultipleLineStrings": true,
-    "disallowNewlineBeforeBlockStatements": true,
-    "disallowSpaceAfterObjectKeys": true,
-    "disallowSpaceAfterPrefixUnaryOperators": true,
-    "disallowSpacesInCallExpression": true,
-    "disallowSpacesInsideArrayBrackets": true,
-    "disallowSpacesInsideParentheses": true,
-    "disallowTrailingWhitespace": true,
+  "disallowSpacesInAnonymousFunctionExpression": {
+    "beforeOpeningRoundBrace": true
+  },
+  "disallowSpacesInFunctionDeclaration": {
+    "beforeOpeningRoundBrace": true
+  },
+  "disallowSpacesInFunctionExpression": {
+    "beforeOpeningRoundBrace": true
+  },
+  "disallowKeywords": ["with"],
+  "disallowMixedSpacesAndTabs": true,
+  "disallowMultipleLineBreaks": true,
+  "disallowNewlineBeforeBlockStatements": true,
+  "disallowSpaceAfterObjectKeys": true,
+  "disallowSpaceAfterPrefixUnaryOperators": true,
+  "disallowSpacesInCallExpression": true,
+  "disallowSpacesInsideArrayBrackets": true,
+  "disallowSpacesInsideParentheses": true,
+  "disallowTrailingWhitespace": true,
+  "disallowUnusedVariables": true,
 
-    "jsDoc": {
-        "checkRedundantAccess": true,
-        "checkTypes": true,
-        "requireNewlineAfterDescription": true,
-        "requireParamDescription": true,
-        "requireParamTypes": true,
-        "requireReturnTypes": true
-    }
+  "jsDoc": {
+    "checkRedundantAccess": true,
+    "checkTypes": true,
+    "requireNewlineAfterDescription": true,
+    "requireParamDescription": true,
+    "requireParamTypes": true,
+    "requireReturnTypes": true
+  }
 }

.markdown-doctest-setup.js

@@ -0,0 +1,11 @@
+'use strict';
+
+delete global['__core-js_shared__'];
+
+const _ = require('./lodash.js');
+const globals = require('lodash-doc-globals');
+
+module.exports = {
+  'babel': false,
+  'globals': _.assign({ '_': _ }, globals)
+};

.travis.yml

@@ -1,76 +1,135 @@
 language: node_js
 sudo: false
 node_js:
-  - "5"
+  - 7
+
+addons:
+  jwt:
+    secure: OYhRpW+8A0Iik+9GmHwa45ZwXeBXw/6zh6I+1w2H9g/LqPRp+Nhq3f4FSpvrrfno8lO8W4h+7s6+JOzF8C8NxNda5UUygKjF9pUphgiQdqls3YZMJlC9zXVl7gQXAHi3nG1s8vWSpwpzYD9fqczE1FX9n0+R63qX3eB6C/LbPeI=
+
+cache:
+  directories:
+    - ~/.npm
+    - ~/.yarn-cache
+    - travis_phantomjs
+
 env:
   global:
-    - BIN="node" ISTANBUL=false OPTION=""
-    - SAUCE_LABS=false SAUCE_USERNAME="lodash"
-    - secure: "tg1JFsIFnxzLaTboFPOnm+aJCuMm5+JdhLlESlqg9x3fwro++7KCnwHKLNovhchaPe4otC43ZMB/nfWhDnDm11dKbm/V6HlTkED+dadTsaLxVDg6J+7yK41QhokBPJOxLV78iDaNaAQVYEirAgZ0yn8kFubxmNKV+bpCGQNc9yU="
+    - BIN=node ISTANBUL=false OPTION=""
+    - SAUCE_LABS=false SAUCE_USERNAME=lodash
+
   matrix:
     -
-    - BIN="phantomjs"
+    - BIN=phantomjs
     - ISTANBUL=true
     - SAUCE_LABS=true
+
 matrix:
   include:
-    - node_js: "0.10"
-      env:
-    - node_js: "0.12"
-      env:
-    - node_js: "4"
+    - node_js: 6
       env:
+
 git:
   depth: 10
+
 branches:
   only:
     - master
+    - 4.17
+
 notifications:
   webhooks:
     urls:
       - https://webhooks.gitter.im/e/4aab6358b0e9aed0b628
     on_success: change
     on_failure: always
-before_install:
-  - "nvm use $TRAVIS_NODE_VERSION"
-  - "npm config set loglevel error"
-  - "npm i -g npm@\"^2.0.0\""
-  - |
-      PATTERN[0]="|\s*if\s*\(isHostObject\b[\s\S]+?\}(?=\n)|"
-      PATTERN[1]="|\s*if\s*\(enumerate\b[\s\S]+?\};\s*\}|"
-      PATTERN[2]="|\s*while\s*\([^)]+\)\s*\{\s*iteratee\(index\);\s*\}|"
-      PATTERN[3]="|\s*else\s*\{\s*assocSet\(data\b[\s\S]+?\}|"
-      PATTERN[4]="|\s*if\s*\(ctorString\b[\s\S]+?\}\s*\}|"
-      PATTERN[5]="|\bindex,\s*iterable\)\s*===\s*false\)[^}]+?(break;)|"
-      PATTERN[6]="|\s*if\s*\(!lodashFunc\)\s*\{\s*return;\s*\}|"
-      PATTERN[7]="|\s*define\([\s\S]+?\);|"
-      PATTERN[8]="|\s*root\._\s*=\s*_;|"
 
-      if [ $ISTANBUL == true ]; then
+before_install:
+  # Upgrade PhantomJS.
+  - |
+      export PHANTOMJS_VERSION=2.1.1
+      export PATH=$PWD/travis_phantomjs/phantomjs-$PHANTOMJS_VERSION-linux-x86_64/bin:$PATH
+      if [ $(phantomjs --version) != $PHANTOMJS_VERSION ]; then
+        rm -rf $PWD/travis_phantomjs
+        mkdir -p $PWD/travis_phantomjs
+        wget https://github.com/Medium/phantomjs/releases/download/v$PHANTOMJS_VERSION/phantomjs-$PHANTOMJS_VERSION-linux-x86_64.tar.bz2
+        tar -xvf phantomjs-$PHANTOMJS_VERSION-linux-x86_64.tar.bz2 -C $PWD/travis_phantomjs
+      fi
+      phantomjs -v
+
+  # Use exact Node version.
+  - nvm use $TRAVIS_NODE_VERSION
+
+  # Setup package managers.
+  - npm set loglevel error
+  - npm set progress false
+  - npm i -g yarn@0.16.1
+  - yarn -V
+
+  # Remove code skipped on the coverage run.
+  - |
+      PATTERN[0]="|\s*while\s*\([^)]+\)\s*\{\s*iteratee\(index\);\s*\}|"
+      PATTERN[1]="|\bindex,\s*iterable\)\s*===\s*false\)[^}]+?(break;)|"
+      PATTERN[2]="|\bcase\s+(?:dataView|promise|set|map|weakMap)CtorString:.+|g"
+      PATTERN[3]="|\s*if\s*\(cache\.size\b[\s\S]+?\}|"
+      PATTERN[4]="|\s*if\s*\(\!lodashFunc\)\s*\{\s*return;\s*\}|"
+      PATTERN[5]="|\s*define\([\s\S]+?\);|"
+      PATTERN[6]="|\s*root\._\s*=\s*_;|"
+
+      if [ $ISTANBUL = true ]; then
         set -e
         for PTRN in ${PATTERN[@]}; do
-          node ./test/remove.js "$PTRN" ./lodash.js
+          node ./test/remove.js $PTRN ./lodash.js
         done
       fi
-  - "git clone --depth=10 --branch=master git://github.com/lodash/lodash-cli ./node_modules/lodash-cli && mkdir $_/node_modules && cd $_ && ln -s ../../../ ./lodash && cd ../ && npm i && cd ../../"
-  - "node ./node_modules/lodash-cli/bin/lodash -o ./dist/lodash.js"
+
+install:
+  # Install packages.
+  - yarn
+
+  # Use lodash-cli from GitHub. Temporarily use a fork.
+  - git clone --depth=10 --branch=master git://github.com/bnjmnt4n/lodash-cli ./node_modules/lodash-cli
+  - cd ./node_modules/lodash-cli/; npm i --production; cd ../../
+  - mkdir -p ./node_modules/lodash-cli/node_modules/lodash; cd $_; cp ../../../../lodash.js ./lodash.js; cp ../../../../package.json ./package.json; cd ../../../../
+
 script:
-  - "[ $ISTANBUL == false ]   || istanbul cover -x \"**/vendor/**\" --report lcovonly ./test/test.js -- ./lodash.js"
-  - "[ $ISTANBUL == false ]   || [ $TRAVIS_SECURE_ENV_VARS == false ] || (cat ./coverage/lcov.info | coveralls) || true"
-  - "[ $ISTANBUL == false ]   || [ $TRAVIS_SECURE_ENV_VARS == false ] || (cat ./coverage/coverage.json | codecov) || true"
-  - "[ $SAUCE_LABS == true ]  || [ $ISTANBUL == true ] || cd ./test"
-  - "[ $SAUCE_LABS == true ]  || [ $ISTANBUL == true ] || $BIN $OPTION ./test.js ../lodash.js"
-  - "[ $SAUCE_LABS == true ]  || [ $ISTANBUL == true ] || [ $TRAVIS_SECURE_ENV_VARS == false ] || $BIN $OPTION ./test.js ../dist/lodash.min.js"
-  - "[ $SAUCE_LABS == false ] || rm -rf ./node_modules/lodash"
-  - "[ $SAUCE_LABS == false ] || ($BIN ./node_modules/lodash-cli/bin/lodash modularize exports=node -o ./node_modules/lodash && node ./node_modules/lodash-cli/bin/lodash -d -o ./node_modules/lodash/index.js)"
-  - "[ $SAUCE_LABS == false ] || $BIN ./node_modules/lodash-cli/bin/lodash core -o ./dist/lodash.core.js"
-  - "[ $SAUCE_LABS == false ] || npm run build"
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"lodash tests\"     runner=\"test/index.html?build=../dist/lodash.js&noglobals=true\"     tags=\"development\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"lodash tests\"     runner=\"test/index.html?build=../dist/lodash.min.js&noglobals=true\" tags=\"production\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"lodash-fp tests\"  runner=\"test/fp.html?noglobals=true\"                                tags=\"development\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"underscore tests\" runner=\"test/underscore.html?build=../dist/lodash.js\"               tags=\"development,underscore\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"underscore tests\" runner=\"test/underscore.html?build=../dist/lodash.min.js\"           tags=\"production,underscore\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.js\"                 tags=\"development,backbone\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.min.js\"             tags=\"production,backbone\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.core.js\"            tags=\"development,backbone\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.core.min.js\"        tags=\"production,backbone\""
+  # Detect code coverage.
+  - |
+      if [ $ISTANBUL = true ]; then
+        istanbul cover -x "**/vendor/**" --report lcovonly ./test/test.js -- ./lodash.js
+        if [ $TRAVIS_SECURE_ENV_VARS = true ]; then
+          cat ./coverage/lcov.info | coveralls
+          cat ./coverage/coverage.json | codecov
+        fi
+      fi
+
+  # Test in Node.js and PhantomJS.
+  - |
+      if [ $ISTANBUL = false ]; then
+        node ./node_modules/lodash-cli/bin/lodash -o ./dist/lodash.js
+        node ./node_modules/lodash-cli/bin/lodash modularize exports=node -o ./
+        node ./node_modules/lodash-cli/bin/lodash -d -o ./lodash.js
+        if [ $SAUCE_LABS = false ]; then
+          cd ./test
+          $BIN $OPTION ./test.js ../lodash.js
+          if [ $TRAVIS_SECURE_ENV_VARS = true ]; then
+            $BIN $OPTION ./test.js ../dist/lodash.min.js
+          fi
+        fi
+      fi
+
+  # Test in Sauce Labs.
+  - |
+      if [ $SAUCE_LABS = true ]; then
+        node ./node_modules/lodash-cli/bin/lodash core -o ./dist/lodash.core.js
+        npm run build
+        $BIN ./test/saucelabs.js name="lodash tests"     runner="test/index.html?build=../dist/lodash.js&noglobals=true"     tags=development
+        $BIN ./test/saucelabs.js name="lodash tests"     runner="test/index.html?build=../dist/lodash.min.js&noglobals=true" tags=production
+        $BIN ./test/saucelabs.js name="lodash-fp tests"  runner="test/fp.html?noglobals=true"                                tags=development
+        $BIN ./test/saucelabs.js name="underscore tests" runner="test/underscore.html?build=../dist/lodash.js"               tags=development,underscore
+        $BIN ./test/saucelabs.js name="underscore tests" runner="test/underscore.html?build=../dist/lodash.min.js"           tags=production,underscore
+        $BIN ./test/saucelabs.js name="backbone tests"   runner="test/backbone.html?build=../dist/lodash.js"                 tags=development,backbone
+        $BIN ./test/saucelabs.js name="backbone tests"   runner="test/backbone.html?build=../dist/lodash.min.js"             tags=production,backbone
+        $BIN ./test/saucelabs.js name="backbone tests"   runner="test/backbone.html?build=../dist/lodash.core.js"            tags=development,backbone
+        $BIN ./test/saucelabs.js name="backbone tests"   runner="test/backbone.html?build=../dist/lodash.core.min.js"        tags=production,backbone
+      fi

CHANGELOG

@@ -0,0 +1 @@
+https://github.com/lodash/lodash/wiki/Changelog

CODE_OF_CONDUCT.md

@@ -1,49 +0,0 @@
-# Contributor Code of Conduct
-
-As contributors and maintainers of this project, and in the interest of
-fostering an open and welcoming community, we pledge to respect all people who
-contribute through reporting issues, posting feature requests, updating
-documentation, submitting pull requests or patches, and other activities.
-
-We are committed to making participation in this project a harassment-free
-experience for everyone, regardless of level of experience, gender, gender
-identity and expression, sexual orientation, disability, personal appearance,
-body size, race, ethnicity, age, religion, or nationality.
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery
-* Personal attacks
-* Trolling or insulting/derogatory comments
-* Public or private harassment
-* Publishing other's private information, such as physical or electronic
-  addresses, without explicit permission
-* Other unethical or unprofessional conduct
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-By adopting this Code of Conduct, project maintainers commit themselves to
-fairly and consistently applying these principles to every aspect of managing
-this project. Project maintainers who do not follow or enforce the Code of
-Conduct may be permanently removed from the project team.
-
-This code of conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community.
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting a project maintainer at
-[coc@lodash.com](mailto:coc@lodash.com). All complaints will be reviewed and
-investigated and will result in a response that is deemed necessary and
-appropriate to the circumstances. Maintainers are obligated to maintain
-confidentiality with regard to the reporter of an incident.
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 1.3.0, available at
-[http://contributor-covenant.org/version/1/3/0/][version]
-
-[homepage]: http://contributor-covenant.org
-[version]: http://contributor-covenant.org/version/1/3/0/

CONTRIBUTING.md

@@ -1,43 +0,0 @@
-# Contributing to lodash
-
-Contributions are always welcome. Before contributing, please read the [code of conduct](https://github.com/lodash/lodash/blob/master/CODE_OF_CONDUCT.md) & [search the issue tracker](https://github.com/lodash/lodash/issues);
-your issue may have already been discussed or fixed in `master`. To contribute, [fork](https://help.github.com/articles/fork-a-repo/) lodash, commit your changes, & [send a pull request](https://help.github.com/articles/using-pull-requests/).
-
-## Tests
-
-Include updated unit tests in the `test` directory as part of your pull request.
-Don’t worry about regenerating the `dist/` or `doc/` files.
-
-Before running the unit tests you’ll need to install, `npm i`, [development dependencies](https://docs.npmjs.com/files/package.json#devdependencies).
-Run unit tests from the command-line via `npm test`, or open `test/index.html` & `test/fp.html` in a web browser.
-The [Backbone](http://backbonejs.org/) & [Underscore](http://underscorejs.org/) test suites are included as well.
-
-## Contributor License Agreement
-
-lodash is a member of the [Dojo Foundation](http://dojofoundation.org/).
-As such, we request that all contributors sign the Dojo Foundation [contributor license agreement](http://dojofoundation.org/about/claForm).
-
-For more information about CLAs, please check out Alex Russell’s excellent post, [“Why Do I Need to Sign This?”](http://infrequently.org/2008/06/why-do-i-need-to-sign-this/).
-
-## Coding Guidelines
-
-In addition to the following guidelines, please follow the conventions already established in the code.
-
-- **Spacing**:<br>
-  Use two spaces for indentation. No tabs.
-
-- **Naming**:<br>
-  Keep variable & method names concise & descriptive.<br>
-  Variable names `index`, `collection`, & `callback` are preferable to `i`, `arr`, & `fn`.
-
-- **Quotes**:<br>
-  Single-quoted strings are preferred to double-quoted strings; however, please use a double-quoted string if the value contains a single-quote character to avoid unnecessary escaping.
-
-- **Comments**:<br>
-  Please use single-line comments to annotate significant additions, & [JSDoc-style](http://www.2ality.com/2011/08/jsdoc-intro.html) comments for functions.
-
-Guidelines are enforced using [JSCS](https://www.npmjs.com/package/jscs):
-
-```bash
-$ npm run style
-```

LICENSE

@@ -1,7 +1,17 @@
-Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
-Based on Underscore.js, copyright 2009-2016 Jeremy Ashkenas,
+Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
+
+Based on Underscore.js, copyright Jeremy Ashkenas,
 DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
 
+This software consists of voluntary contributions made by many
+individuals. For exact contribution history, see the revision history
+available at https://github.com/lodash/lodash
+
+The following license applies to all parts of this software except as
+documented below:
+
+====
+
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
@@ -20,3 +30,18 @@ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+====
+
+Copyright and related rights for sample code are waived via CC0. Sample
+code is defined as all source code displayed within the prose of the
+documentation.
+
+CC0: http://creativecommons.org/publicdomain/zero/1.0/
+
+====
+
+Files located in the node_modules and vendor directories are externally
+maintained libraries used by this software which have their own
+licenses; we recommend you read them, as their terms may differ from the
+terms above.

README.md

@@ -1,30 +1,80 @@
-# lodash v4.0.1
+# lodash v4.17.21
 
-The [lodash](https://lodash.com/) library exported as a [UMD](https://github.com/umdjs/umd) module.
+[Site](https://lodash.com/) |
+[Docs](https://lodash.com/docs) |
+[FP Guide](https://github.com/lodash/lodash/wiki/FP-Guide) |
+[Contributing](https://github.com/lodash/lodash/blob/master/.github/CONTRIBUTING.md) |
+[Wiki](https://github.com/lodash/lodash/wiki "Changelog, Roadmap, etc.") |
+[Code of Conduct](https://js.foundation/conduct/) |
+[Twitter](https://twitter.com/bestiejs) |
+[Chat](https://gitter.im/lodash/lodash)
+
+The [Lodash](https://lodash.com/) library exported as a [UMD](https://github.com/umdjs/umd) module.
 
 Generated using [lodash-cli](https://www.npmjs.com/package/lodash-cli):
-```bash
+```shell
 $ npm run build
 $ lodash -o ./dist/lodash.js
 $ lodash core -o ./dist/lodash.core.js
 ```
 
-## Community
+## Download
 
-[![Join the chat at https://gitter.im/lodash/lodash](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/lodash/lodash)
+ * [Core build](https://raw.githubusercontent.com/lodash/lodash/4.17.21/dist/lodash.core.js) ([~4 kB gzipped](https://raw.githubusercontent.com/lodash/lodash/4.17.21/dist/lodash.core.min.js))
+ * [Full build](https://raw.githubusercontent.com/lodash/lodash/4.17.21/dist/lodash.js) ([~24 kB gzipped](https://raw.githubusercontent.com/lodash/lodash/4.17.21/dist/lodash.min.js))
+ * [CDN copies](https://www.jsdelivr.com/projects/lodash)
 
-## Module formats
+Lodash is released under the [MIT license](https://raw.githubusercontent.com/lodash/lodash/4.17.21/LICENSE) & supports modern environments.<br>
+Review the [build differences](https://github.com/lodash/lodash/wiki/build-differences) & pick one that’s right for you.
 
-Lodash is also available in a variety of other builds & module formats.
+## Installation
 
- * [lodash](https://www.npmjs.com/package/lodash) & [per method](https://www.npmjs.com/browse/keyword/lodash-modularized) packages
- * [lodash-amd](https://github.com/lodash/lodash/tree/4.0.1-amd)
- * [lodash-es](https://github.com/lodash/lodash/tree/4.0.1-es)
+In a browser:
+```html
+<script src="lodash.js"></script>
+```
 
-## Further Reading
+Using npm:
+```shell
+$ npm i -g npm
+$ npm i --save lodash
+```
 
-  * [API Documentation](https://lodash.com/docs)
-  * [Build Differences](https://github.com/lodash/lodash/wiki/Build-Differences)
-  * [Changelog](https://github.com/lodash/lodash/wiki/Changelog)
-  * [Roadmap](https://github.com/lodash/lodash/wiki/Roadmap)
-  * [More Resources](https://github.com/lodash/lodash/wiki/Resources)
+In Node.js:
+```js
+// Load the full build.
+var _ = require('lodash');
+// Load the core build.
+var _ = require('lodash/core');
+// Load the FP build for immutable auto-curried iteratee-first data-last methods.
+var fp = require('lodash/fp');
+
+// Load method categories.
+var array = require('lodash/array');
+var object = require('lodash/fp/object');
+
+// Cherry-pick methods for smaller browserify/rollup/webpack bundles.
+var at = require('lodash/at');
+var curryN = require('lodash/fp/curryN');
+```
+
+**Note:**<br>
+Install [n_](https://www.npmjs.com/package/n_) for Lodash use in the Node.js < 6 REPL.
+
+## Why Lodash?
+
+Lodash makes JavaScript easier by taking the hassle out of working with arrays,<br>
+numbers, objects, strings, etc. Lodash’s modular methods are great for:
+
+ * Iterating arrays, objects, & strings
+ * Manipulating & testing values
+ * Creating composite functions
+
+## Module Formats
+
+Lodash is available in a [variety of builds](https://lodash.com/custom-builds) & module formats.
+
+ * [lodash](https://www.npmjs.com/package/lodash) & [per method packages](https://www.npmjs.com/browse/keyword/lodash-modularized)
+ * [lodash-es](https://www.npmjs.com/package/lodash-es), [babel-plugin-lodash](https://www.npmjs.com/package/babel-plugin-lodash), & [lodash-webpack-plugin](https://www.npmjs.com/package/lodash-webpack-plugin)
+ * [lodash/fp](https://github.com/lodash/lodash/tree/npm/fp)
+ * [lodash-amd](https://www.npmjs.com/package/lodash-amd)

dist/lodash.core.min.js

@@ -1,30 +1,29 @@
 /**
  * @license
- * lodash 4.0.1 (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
+ * Lodash (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
  * Build: `lodash core -o ./dist/lodash.core.js`
  */
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dist/lodash.min.js

@@ -1,118 +1,140 @@
 /**
  * @license
- * lodash 4.0.1 (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
- * Build: `lodash -o ./dist/lodash.js`
+ * Lodash <https://lodash.com/>
+ * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>
+ * Released under MIT license <https://lodash.com/license>
+ * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
+ * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  */
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dist/mapping.fp.js

@@ -52,213 +52,369 @@ return /******/ (function(modules) { // webpackBootstrap
 /************************************************************************/
 /******/ ([
 /* 0 */
-/***/ function(module, exports) {
+/***/ (function(module, exports) {
 
-	module.exports = {
+	/** Used to map aliases to their real names. */
+	exports.aliasToReal = {
 
-	  /** Used to map method names to their aliases. */
-	  'alias': {
-	    'ary': ['nAry'],
-	    'assignIn': ['extend'],
-	    'assignInWith': ['extendWith'],
-	    'filter': ['whereEq'],
-	    'flatten': ['unnest'],
-	    'flow': ['pipe'],
-	    'flowRight': ['compose'],
-	    'forEach': ['each'],
-	    'forEachRight': ['eachRight'],
-	    'get': ['path', 'prop'],
-	    'getOr': ['pathOr', 'propOr'],
-	    'head': ['first'],
-	    'includes': ['contains'],
-	    'initial': ['init'],
-	    'isEqual': ['equals'],
-	    'mapValues': ['mapObj'],
-	    'matchesProperty': ['pathEq'],
-	    'omit': ['dissoc', 'omitAll'],
-	    'overArgs': ['useWith'],
-	    'overEvery': ['allPass'],
-	    'overSome': ['somePass'],
-	    'pick': ['pickAll'],
-	    'propertyOf': ['propOf'],
-	    'rest': ['unapply'],
-	    'some': ['all'],
-	    'spread': ['apply'],
-	    'zipObject': ['zipObj']
+	  // Lodash aliases.
+	  'each': 'forEach',
+	  'eachRight': 'forEachRight',
+	  'entries': 'toPairs',
+	  'entriesIn': 'toPairsIn',
+	  'extend': 'assignIn',
+	  'extendAll': 'assignInAll',
+	  'extendAllWith': 'assignInAllWith',
+	  'extendWith': 'assignInWith',
+	  'first': 'head',
+
+	  // Methods that are curried variants of others.
+	  'conforms': 'conformsTo',
+	  'matches': 'isMatch',
+	  'property': 'get',
+
+	  // Ramda aliases.
+	  '__': 'placeholder',
+	  'F': 'stubFalse',
+	  'T': 'stubTrue',
+	  'all': 'every',
+	  'allPass': 'overEvery',
+	  'always': 'constant',
+	  'any': 'some',
+	  'anyPass': 'overSome',
+	  'apply': 'spread',
+	  'assoc': 'set',
+	  'assocPath': 'set',
+	  'complement': 'negate',
+	  'compose': 'flowRight',
+	  'contains': 'includes',
+	  'dissoc': 'unset',
+	  'dissocPath': 'unset',
+	  'dropLast': 'dropRight',
+	  'dropLastWhile': 'dropRightWhile',
+	  'equals': 'isEqual',
+	  'identical': 'eq',
+	  'indexBy': 'keyBy',
+	  'init': 'initial',
+	  'invertObj': 'invert',
+	  'juxt': 'over',
+	  'omitAll': 'omit',
+	  'nAry': 'ary',
+	  'path': 'get',
+	  'pathEq': 'matchesProperty',
+	  'pathOr': 'getOr',
+	  'paths': 'at',
+	  'pickAll': 'pick',
+	  'pipe': 'flow',
+	  'pluck': 'map',
+	  'prop': 'get',
+	  'propEq': 'matchesProperty',
+	  'propOr': 'getOr',
+	  'props': 'at',
+	  'symmetricDifference': 'xor',
+	  'symmetricDifferenceBy': 'xorBy',
+	  'symmetricDifferenceWith': 'xorWith',
+	  'takeLast': 'takeRight',
+	  'takeLastWhile': 'takeRightWhile',
+	  'unapply': 'rest',
+	  'unnest': 'flatten',
+	  'useWith': 'overArgs',
+	  'where': 'conformsTo',
+	  'whereEq': 'isMatch',
+	  'zipObj': 'zipObject'
+	};
+
+	/** Used to map ary to method names. */
+	exports.aryMethod = {
+	  '1': [
+	    'assignAll', 'assignInAll', 'attempt', 'castArray', 'ceil', 'create',
+	    'curry', 'curryRight', 'defaultsAll', 'defaultsDeepAll', 'floor', 'flow',
+	    'flowRight', 'fromPairs', 'invert', 'iteratee', 'memoize', 'method', 'mergeAll',
+	    'methodOf', 'mixin', 'nthArg', 'over', 'overEvery', 'overSome','rest', 'reverse',
+	    'round', 'runInContext', 'spread', 'template', 'trim', 'trimEnd', 'trimStart',
+	    'uniqueId', 'words', 'zipAll'
+	  ],
+	  '2': [
+	    'add', 'after', 'ary', 'assign', 'assignAllWith', 'assignIn', 'assignInAllWith',
+	    'at', 'before', 'bind', 'bindAll', 'bindKey', 'chunk', 'cloneDeepWith',
+	    'cloneWith', 'concat', 'conformsTo', 'countBy', 'curryN', 'curryRightN',
+	    'debounce', 'defaults', 'defaultsDeep', 'defaultTo', 'delay', 'difference',
+	    'divide', 'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq',
+	    'every', 'filter', 'find', 'findIndex', 'findKey', 'findLast', 'findLastIndex',
+	    'findLastKey', 'flatMap', 'flatMapDeep', 'flattenDepth', 'forEach',
+	    'forEachRight', 'forIn', 'forInRight', 'forOwn', 'forOwnRight', 'get',
+	    'groupBy', 'gt', 'gte', 'has', 'hasIn', 'includes', 'indexOf', 'intersection',
+	    'invertBy', 'invoke', 'invokeMap', 'isEqual', 'isMatch', 'join', 'keyBy',
+	    'lastIndexOf', 'lt', 'lte', 'map', 'mapKeys', 'mapValues', 'matchesProperty',
+	    'maxBy', 'meanBy', 'merge', 'mergeAllWith', 'minBy', 'multiply', 'nth', 'omit',
+	    'omitBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt', 'partial',
+	    'partialRight', 'partition', 'pick', 'pickBy', 'propertyOf', 'pull', 'pullAll',
+	    'pullAt', 'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove',
+	    'repeat', 'restFrom', 'result', 'sampleSize', 'some', 'sortBy', 'sortedIndex',
+	    'sortedIndexOf', 'sortedLastIndex', 'sortedLastIndexOf', 'sortedUniqBy',
+	    'split', 'spreadFrom', 'startsWith', 'subtract', 'sumBy', 'take', 'takeRight',
+	    'takeRightWhile', 'takeWhile', 'tap', 'throttle', 'thru', 'times', 'trimChars',
+	    'trimCharsEnd', 'trimCharsStart', 'truncate', 'union', 'uniqBy', 'uniqWith',
+	    'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip', 'zipObject',
+	    'zipObjectDeep'
+	  ],
+	  '3': [
+	    'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
+	    'findFrom', 'findIndexFrom', 'findLastFrom', 'findLastIndexFrom', 'getOr',
+	    'includesFrom', 'indexOfFrom', 'inRange', 'intersectionBy', 'intersectionWith',
+	    'invokeArgs', 'invokeArgsMap', 'isEqualWith', 'isMatchWith', 'flatMapDepth',
+	    'lastIndexOfFrom', 'mergeWith', 'orderBy', 'padChars', 'padCharsEnd',
+	    'padCharsStart', 'pullAllBy', 'pullAllWith', 'rangeStep', 'rangeStepRight',
+	    'reduce', 'reduceRight', 'replace', 'set', 'slice', 'sortedIndexBy',
+	    'sortedLastIndexBy', 'transform', 'unionBy', 'unionWith', 'update', 'xorBy',
+	    'xorWith', 'zipWith'
+	  ],
+	  '4': [
+	    'fill', 'setWith', 'updateWith'
+	  ]
+	};
+
+	/** Used to map ary to rearg configs. */
+	exports.aryRearg = {
+	  '2': [1, 0],
+	  '3': [2, 0, 1],
+	  '4': [3, 2, 0, 1]
+	};
+
+	/** Used to map method names to their iteratee ary. */
+	exports.iterateeAry = {
+	  'dropRightWhile': 1,
+	  'dropWhile': 1,
+	  'every': 1,
+	  'filter': 1,
+	  'find': 1,
+	  'findFrom': 1,
+	  'findIndex': 1,
+	  'findIndexFrom': 1,
+	  'findKey': 1,
+	  'findLast': 1,
+	  'findLastFrom': 1,
+	  'findLastIndex': 1,
+	  'findLastIndexFrom': 1,
+	  'findLastKey': 1,
+	  'flatMap': 1,
+	  'flatMapDeep': 1,
+	  'flatMapDepth': 1,
+	  'forEach': 1,
+	  'forEachRight': 1,
+	  'forIn': 1,
+	  'forInRight': 1,
+	  'forOwn': 1,
+	  'forOwnRight': 1,
+	  'map': 1,
+	  'mapKeys': 1,
+	  'mapValues': 1,
+	  'partition': 1,
+	  'reduce': 2,
+	  'reduceRight': 2,
+	  'reject': 1,
+	  'remove': 1,
+	  'some': 1,
+	  'takeRightWhile': 1,
+	  'takeWhile': 1,
+	  'times': 1,
+	  'transform': 2
+	};
+
+	/** Used to map method names to iteratee rearg configs. */
+	exports.iterateeRearg = {
+	  'mapKeys': [1],
+	  'reduceRight': [1, 0]
+	};
+
+	/** Used to map method names to rearg configs. */
+	exports.methodRearg = {
+	  'assignInAllWith': [1, 0],
+	  'assignInWith': [1, 2, 0],
+	  'assignAllWith': [1, 0],
+	  'assignWith': [1, 2, 0],
+	  'differenceBy': [1, 2, 0],
+	  'differenceWith': [1, 2, 0],
+	  'getOr': [2, 1, 0],
+	  'intersectionBy': [1, 2, 0],
+	  'intersectionWith': [1, 2, 0],
+	  'isEqualWith': [1, 2, 0],
+	  'isMatchWith': [2, 1, 0],
+	  'mergeAllWith': [1, 0],
+	  'mergeWith': [1, 2, 0],
+	  'padChars': [2, 1, 0],
+	  'padCharsEnd': [2, 1, 0],
+	  'padCharsStart': [2, 1, 0],
+	  'pullAllBy': [2, 1, 0],
+	  'pullAllWith': [2, 1, 0],
+	  'rangeStep': [1, 2, 0],
+	  'rangeStepRight': [1, 2, 0],
+	  'setWith': [3, 1, 2, 0],
+	  'sortedIndexBy': [2, 1, 0],
+	  'sortedLastIndexBy': [2, 1, 0],
+	  'unionBy': [1, 2, 0],
+	  'unionWith': [1, 2, 0],
+	  'updateWith': [3, 1, 2, 0],
+	  'xorBy': [1, 2, 0],
+	  'xorWith': [1, 2, 0],
+	  'zipWith': [1, 2, 0]
+	};
+
+	/** Used to map method names to spread configs. */
+	exports.methodSpread = {
+	  'assignAll': { 'start': 0 },
+	  'assignAllWith': { 'start': 0 },
+	  'assignInAll': { 'start': 0 },
+	  'assignInAllWith': { 'start': 0 },
+	  'defaultsAll': { 'start': 0 },
+	  'defaultsDeepAll': { 'start': 0 },
+	  'invokeArgs': { 'start': 2 },
+	  'invokeArgsMap': { 'start': 2 },
+	  'mergeAll': { 'start': 0 },
+	  'mergeAllWith': { 'start': 0 },
+	  'partial': { 'start': 1 },
+	  'partialRight': { 'start': 1 },
+	  'without': { 'start': 1 },
+	  'zipAll': { 'start': 0 }
+	};
+
+	/** Used to identify methods which mutate arrays or objects. */
+	exports.mutate = {
+	  'array': {
+	    'fill': true,
+	    'pull': true,
+	    'pullAll': true,
+	    'pullAllBy': true,
+	    'pullAllWith': true,
+	    'pullAt': true,
+	    'remove': true,
+	    'reverse': true
 	  },
-
-	  /** Used to map method names to their iteratee ary. */
-	  'aryIteratee': {
-	    'assignWith': 2,
-	    'assignInWith': 2,
-	    'cloneDeepWith': 1,
-	    'cloneWith': 1,
-	    'dropRightWhile': 1,
-	    'dropWhile': 1,
-	    'every': 1,
-	    'filter': 1,
-	    'find': 1,
-	    'findIndex': 1,
-	    'findKey': 1,
-	    'findLast': 1,
-	    'findLastIndex': 1,
-	    'findLastKey': 1,
-	    'flatMap': 1,
-	    'forEach': 1,
-	    'forEachRight': 1,
-	    'forIn': 1,
-	    'forInRight': 1,
-	    'forOwn': 1,
-	    'forOwnRight': 1,
-	    'isEqualWith': 2,
-	    'isMatchWith': 2,
-	    'map': 1,
-	    'mapKeys': 1,
-	    'mapValues': 1,
-	    'partition': 1,
-	    'reduce': 2,
-	    'reduceRight': 2,
-	    'reject': 1,
-	    'remove': 1,
-	    'some': 1,
-	    'takeRightWhile': 1,
-	    'takeWhile': 1,
-	    'times': 1,
-	    'transform': 2
-	  },
-
-	  /** Used to map ary to method names. */
-	  'aryMethod': {
-	    1:[
-	        'attempt', 'ceil', 'create', 'curry', 'curryRight', 'floor', 'fromPairs',
-	        'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin', 'over',
-	        'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
-	        'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
-	      ],
-	    2:[
-	        'add', 'after', 'ary', 'assign', 'at', 'before', 'bind', 'bindKey',
-	        'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
-	        'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
-	        'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq',
-	        'every', 'extend', 'filter', 'find', 'find', 'findIndex', 'findKey',
-	        'findLast', 'findLastIndex', 'findLastKey', 'flatMap', 'forEach',
-	        'forEachRight', 'forIn', 'forInRight', 'forOwn', 'forOwnRight', 'get',
-	        'groupBy', 'gt', 'gte', 'has', 'hasIn', 'includes', 'indexOf', 'intersection',
-	        'invoke', 'invokeMap', 'isEqual', 'isMatch', 'join', 'keyBy', 'lastIndexOf',
-	        'lt', 'lte', 'map', 'mapKeys', 'mapValues', 'matchesProperty', 'maxBy',
-	        'merge', 'minBy', 'omit', 'omitBy', 'orderBy', 'overArgs', 'pad', 'padEnd',
-	        'padStart', 'parseInt', 'partition', 'pick', 'pickBy', 'pull', 'pullAll',
-	        'pullAt', 'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove',
-	        'repeat', 'result', 'sampleSize', 'some', 'sortBy', 'sortedIndex',
-	        'sortedIndexOf', 'sortedLastIndex', 'sortedLastIndexOf', 'sortedUniqBy',
-	        'split', 'startsWith', 'subtract', 'sumBy', 'take', 'takeRight', 'takeRightWhile',
-	        'takeWhile', 'tap', 'throttle', 'thru', 'times', 'truncate', 'union', 'uniqBy',
-	        'uniqWith', 'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip', 'zipObject'
-	      ],
-	    3:[
-	        'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
-	        'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
-	        'isMatchWith', 'mergeWith', 'pullAllBy', 'reduce', 'reduceRight', 'replace',
-	        'set', 'slice', 'sortedIndexBy', 'sortedLastIndexBy', 'transform', 'unionBy',
-	        'unionWith', 'xorBy', 'xorWith', 'zipWith'
-	      ],
-	    4:[
-	        'fill', 'setWith'
-	      ]
-	  },
-
-	  /** Used to map ary to rearg configs. */
-	  'aryRearg': {
-	    2: [1, 0],
-	    3: [2, 1, 0],
-	    4: [3, 2, 0, 1]
-	  },
-
-	  /** Used to map method names to iteratee rearg configs. */
-	  'iterateeRearg': {
-	    'findKey': [1],
-	    'findLastKey': [1],
-	    'mapKeys': [1]
-	  },
-
-	  /** Used to map method names to rearg configs. */
-	  'methodRearg': {
-	    'clamp': [2, 0, 1],
-	    'reduce': [2, 0, 1],
-	    'reduceRight': [2, 0, 1],
-	    'set': [2, 0, 1],
-	    'setWith': [3, 1, 2, 0],
-	    'slice': [2, 0, 1],
-	    'transform': [2, 0, 1]
-	  },
-
-	  /** Used to iterate `mapping.aryMethod` keys. */
-	  'caps': [1, 2, 3, 4],
-
-	  /** Used to map keys to other keys. */
-	  'key': {
-	    'curryN': 'curry',
-	    'curryRightN': 'curryRight',
-	    'getOr': 'get'
-	  },
-
-	  /** Used to identify methods which mutate arrays or objects. */
-	  'mutate': {
-	    'array': {
-	      'fill': true,
-	      'pull': true,
-	      'pullAll': true,
-	      'pullAllBy': true,
-	      'pullAt': true,
-	      'remove': true,
-	      'reverse': true
-	    },
-	    'object': {
-	      'assign': true,
-	      'assignIn': true,
-	      'assignInWith': true,
-	      'assignWith': true,
-	      'defaults': true,
-	      'defaultsDeep': true,
-	      'merge': true,
-	      'mergeWith': true
-	    },
-	    'set': {
-	      'set': true,
-	      'setWith': true
-	    }
-	  },
-
-	  /** Used to track methods with placeholder support */
-	  'placeholder': {
-	    'bind': true,
-	    'bindKey': true,
-	    'curry': true,
-	    'curryRight': true,
-	    'partial': true,
-	    'partialRight': true
-	  },
-
-	  /** Used to track methods that skip `_.rearg`. */
-	  'skipRearg': {
+	  'object': {
 	    'assign': true,
+	    'assignAll': true,
+	    'assignAllWith': true,
 	    'assignIn': true,
-	    'concat': true,
+	    'assignInAll': true,
+	    'assignInAllWith': true,
+	    'assignInWith': true,
+	    'assignWith': true,
 	    'defaults': true,
+	    'defaultsAll': true,
 	    'defaultsDeep': true,
-	    'difference': true,
-	    'matchesProperty': true,
+	    'defaultsDeepAll': true,
 	    'merge': true,
-	    'random': true,
-	    'range': true,
-	    'rangeRight': true,
-	    'zip': true,
-	    'zipObject': true
+	    'mergeAll': true,
+	    'mergeAllWith': true,
+	    'mergeWith': true,
+	  },
+	  'set': {
+	    'set': true,
+	    'setWith': true,
+	    'unset': true,
+	    'update': true,
+	    'updateWith': true
 	  }
 	};
 
+	/** Used to map real names to their aliases. */
+	exports.realToAlias = (function() {
+	  var hasOwnProperty = Object.prototype.hasOwnProperty,
+	      object = exports.aliasToReal,
+	      result = {};
 
-/***/ }
+	  for (var key in object) {
+	    var value = object[key];
+	    if (hasOwnProperty.call(result, value)) {
+	      result[value].push(key);
+	    } else {
+	      result[value] = [key];
+	    }
+	  }
+	  return result;
+	}());
+
+	/** Used to map method names to other names. */
+	exports.remap = {
+	  'assignAll': 'assign',
+	  'assignAllWith': 'assignWith',
+	  'assignInAll': 'assignIn',
+	  'assignInAllWith': 'assignInWith',
+	  'curryN': 'curry',
+	  'curryRightN': 'curryRight',
+	  'defaultsAll': 'defaults',
+	  'defaultsDeepAll': 'defaultsDeep',
+	  'findFrom': 'find',
+	  'findIndexFrom': 'findIndex',
+	  'findLastFrom': 'findLast',
+	  'findLastIndexFrom': 'findLastIndex',
+	  'getOr': 'get',
+	  'includesFrom': 'includes',
+	  'indexOfFrom': 'indexOf',
+	  'invokeArgs': 'invoke',
+	  'invokeArgsMap': 'invokeMap',
+	  'lastIndexOfFrom': 'lastIndexOf',
+	  'mergeAll': 'merge',
+	  'mergeAllWith': 'mergeWith',
+	  'padChars': 'pad',
+	  'padCharsEnd': 'padEnd',
+	  'padCharsStart': 'padStart',
+	  'propertyOf': 'get',
+	  'rangeStep': 'range',
+	  'rangeStepRight': 'rangeRight',
+	  'restFrom': 'rest',
+	  'spreadFrom': 'spread',
+	  'trimChars': 'trim',
+	  'trimCharsEnd': 'trimEnd',
+	  'trimCharsStart': 'trimStart',
+	  'zipAll': 'zip'
+	};
+
+	/** Used to track methods that skip fixing their arity. */
+	exports.skipFixed = {
+	  'castArray': true,
+	  'flow': true,
+	  'flowRight': true,
+	  'iteratee': true,
+	  'mixin': true,
+	  'rearg': true,
+	  'runInContext': true
+	};
+
+	/** Used to track methods that skip rearranging arguments. */
+	exports.skipRearg = {
+	  'add': true,
+	  'assign': true,
+	  'assignIn': true,
+	  'bind': true,
+	  'bindKey': true,
+	  'concat': true,
+	  'difference': true,
+	  'divide': true,
+	  'eq': true,
+	  'gt': true,
+	  'gte': true,
+	  'isEqual': true,
+	  'lt': true,
+	  'lte': true,
+	  'matchesProperty': true,
+	  'merge': true,
+	  'multiply': true,
+	  'overArgs': true,
+	  'partial': true,
+	  'partialRight': true,
+	  'propertyOf': true,
+	  'random': true,
+	  'range': true,
+	  'rangeRight': true,
+	  'subtract': true,
+	  'zip': true,
+	  'zipObject': true,
+	  'zipObjectDeep': true
+	};
+
+
+/***/ })
 /******/ ])
 });
 ;

fp/_baseConvert.js

@@ -1,114 +1,222 @@
 var mapping = require('./_mapping'),
-    mutateMap = mapping.mutate,
-    placeholder = {};
+    fallbackHolder = require('./placeholder');
+
+/** Built-in value reference. */
+var push = Array.prototype.push;
+
+/**
+ * Creates a function, with an arity of `n`, that invokes `func` with the
+ * arguments it receives.
+ *
+ * @private
+ * @param {Function} func The function to wrap.
+ * @param {number} n The arity of the new function.
+ * @returns {Function} Returns the new function.
+ */
+function baseArity(func, n) {
+  return n == 2
+    ? function(a, b) { return func.apply(undefined, arguments); }
+    : function(a) { return func.apply(undefined, arguments); };
+}
+
+/**
+ * Creates a function that invokes `func`, with up to `n` arguments, ignoring
+ * any additional arguments.
+ *
+ * @private
+ * @param {Function} func The function to cap arguments for.
+ * @param {number} n The arity cap.
+ * @returns {Function} Returns the new function.
+ */
+function baseAry(func, n) {
+  return n == 2
+    ? function(a, b) { return func(a, b); }
+    : function(a) { return func(a); };
+}
+
+/**
+ * Creates a clone of `array`.
+ *
+ * @private
+ * @param {Array} array The array to clone.
+ * @returns {Array} Returns the cloned array.
+ */
+function cloneArray(array) {
+  var length = array ? array.length : 0,
+      result = Array(length);
+
+  while (length--) {
+    result[length] = array[length];
+  }
+  return result;
+}
+
+/**
+ * Creates a function that clones a given object using the assignment `func`.
+ *
+ * @private
+ * @param {Function} func The assignment function.
+ * @returns {Function} Returns the new cloner function.
+ */
+function createCloner(func) {
+  return function(object) {
+    return func({}, object);
+  };
+}
+
+/**
+ * A specialized version of `_.spread` which flattens the spread array into
+ * the arguments of the invoked `func`.
+ *
+ * @private
+ * @param {Function} func The function to spread arguments over.
+ * @param {number} start The start position of the spread.
+ * @returns {Function} Returns the new function.
+ */
+function flatSpread(func, start) {
+  return function() {
+    var length = arguments.length,
+        lastIndex = length - 1,
+        args = Array(length);
+
+    while (length--) {
+      args[length] = arguments[length];
+    }
+    var array = args[start],
+        otherArgs = args.slice(0, start);
+
+    if (array) {
+      push.apply(otherArgs, array);
+    }
+    if (start != lastIndex) {
+      push.apply(otherArgs, args.slice(start + 1));
+    }
+    return func.apply(this, otherArgs);
+  };
+}
+
+/**
+ * Creates a function that wraps `func` and uses `cloner` to clone the first
+ * argument it receives.
+ *
+ * @private
+ * @param {Function} func The function to wrap.
+ * @param {Function} cloner The function to clone arguments.
+ * @returns {Function} Returns the new immutable function.
+ */
+function wrapImmutable(func, cloner) {
+  return function() {
+    var length = arguments.length;
+    if (!length) {
+      return;
+    }
+    var args = Array(length);
+    while (length--) {
+      args[length] = arguments[length];
+    }
+    var result = args[0] = cloner.apply(undefined, args);
+    func.apply(undefined, args);
+    return result;
+  };
+}
 
 /**
  * The base implementation of `convert` which accepts a `util` object of methods
  * required to perform conversions.
  *
  * @param {Object} util The util object.
- * @param {string} name The name of the function to wrap.
- * @param {Function} func The function to wrap.
+ * @param {string} name The name of the function to convert.
+ * @param {Function} func The function to convert.
+ * @param {Object} [options] The options object.
+ * @param {boolean} [options.cap=true] Specify capping iteratee arguments.
+ * @param {boolean} [options.curry=true] Specify currying.
+ * @param {boolean} [options.fixed=true] Specify fixed arity.
+ * @param {boolean} [options.immutable=true] Specify immutable operations.
+ * @param {boolean} [options.rearg=true] Specify rearranging arguments.
  * @returns {Function|Object} Returns the converted function or object.
  */
-function baseConvert(util, name, func) {
-  if (typeof func != 'function') {
+function baseConvert(util, name, func, options) {
+  var isLib = typeof name == 'function',
+      isObj = name === Object(name);
+
+  if (isObj) {
+    options = func;
     func = name;
     name = undefined;
   }
   if (func == null) {
     throw new TypeError;
   }
-  var isLib = name === undefined && typeof func.VERSION == 'string';
+  options || (options = {});
 
-  var _ = isLib ? func : {
+  var config = {
+    'cap': 'cap' in options ? options.cap : true,
+    'curry': 'curry' in options ? options.curry : true,
+    'fixed': 'fixed' in options ? options.fixed : true,
+    'immutable': 'immutable' in options ? options.immutable : true,
+    'rearg': 'rearg' in options ? options.rearg : true
+  };
+
+  var defaultHolder = isLib ? func : fallbackHolder,
+      forceCurry = ('curry' in options) && options.curry,
+      forceFixed = ('fixed' in options) && options.fixed,
+      forceRearg = ('rearg' in options) && options.rearg,
+      pristine = isLib ? func.runInContext() : undefined;
+
+  var helpers = isLib ? func : {
     'ary': util.ary,
-    'cloneDeep': util.cloneDeep,
+    'assign': util.assign,
+    'clone': util.clone,
     'curry': util.curry,
     'forEach': util.forEach,
+    'isArray': util.isArray,
+    'isError': util.isError,
     'isFunction': util.isFunction,
+    'isWeakMap': util.isWeakMap,
     'iteratee': util.iteratee,
     'keys': util.keys,
-    'rearg': util.rearg
+    'rearg': util.rearg,
+    'toInteger': util.toInteger,
+    'toPath': util.toPath
   };
 
-  var ary = _.ary,
-      cloneDeep = _.cloneDeep,
-      curry = _.curry,
-      each = _.forEach,
-      isFunction = _.isFunction,
-      keys = _.keys,
-      rearg = _.rearg;
+  var ary = helpers.ary,
+      assign = helpers.assign,
+      clone = helpers.clone,
+      curry = helpers.curry,
+      each = helpers.forEach,
+      isArray = helpers.isArray,
+      isError = helpers.isError,
+      isFunction = helpers.isFunction,
+      isWeakMap = helpers.isWeakMap,
+      keys = helpers.keys,
+      rearg = helpers.rearg,
+      toInteger = helpers.toInteger,
+      toPath = helpers.toPath;
 
-  var baseArity = function(func, n) {
-    return n == 2
-      ? function(a, b) { return func.apply(undefined, arguments); }
-      : function(a) { return func.apply(undefined, arguments); };
-  };
-
-  var baseAry = function(func, n) {
-    return n == 2
-      ? function(a, b) { return func(a, b); }
-      : function(a) { return func(a); };
-  };
-
-  var cloneArray = function(array) {
-    var length = array ? array.length : 0,
-        result = Array(length);
-
-    while (length--) {
-      result[length] = array[length];
-    }
-    return result;
-  };
-
-  var createCloner = function(func) {
-    return function(object) {
-      return func({}, object);
-    };
-  };
-
-  var immutWrap = function(func, cloner) {
-    return overArg(func, cloner, true);
-  };
-
-  var iterateeAry = function(func, n) {
-    return overArg(func, function(func) {
-      return baseAry(func, n);
-    });
-  };
-
-  var iterateeRearg = function(func, indexes) {
-    return overArg(func, function(func) {
-      var n = indexes.length;
-      return baseArity(rearg(baseAry(func, n), indexes), n);
-    });
-  };
-
-  var overArg = function(func, iteratee, retArg) {
-    return function() {
-      var length = arguments.length,
-          args = Array(length);
-
-      while (length--) {
-        args[length] = arguments[length];
-      }
-      args[0] = iteratee(args[0]);
-      var result = func.apply(undefined, args);
-      return retArg ? args[0] : result;
-    };
-  };
+  var aryMethodKeys = keys(mapping.aryMethod);
 
   var wrappers = {
+    'castArray': function(castArray) {
+      return function() {
+        var value = arguments[0];
+        return isArray(value)
+          ? castArray(cloneArray(value))
+          : castArray.apply(undefined, arguments);
+      };
+    },
     'iteratee': function(iteratee) {
       return function() {
         var func = arguments[0],
-            arity = arguments[1];
+            arity = arguments[1],
+            result = iteratee(func, arity),
+            length = result.length;
 
-        arity = arity > 2 ? (arity - 2) : 1;
-        func = iteratee(func);
-        var length = func.length;
-        return (length && length <= arity) ? func : baseAry(func, arity);
+        if (config.cap && typeof arity == 'number') {
+          arity = arity > 2 ? (arity - 2) : 1;
+          return (length && length <= arity) ? result : baseAry(result, arity);
+        }
+        return result;
       };
     },
     'mixin': function(mixin) {
@@ -117,105 +225,340 @@ function baseConvert(util, name, func) {
         if (!isFunction(func)) {
           return mixin(func, Object(source));
         }
-        var methods = [],
-            methodNames = [];
-
+        var pairs = [];
         each(keys(source), function(key) {
-          var value = source[key];
-          if (isFunction(value)) {
-            methodNames.push(key);
-            methods.push(func.prototype[key]);
+          if (isFunction(source[key])) {
+            pairs.push([key, func.prototype[key]]);
           }
         });
 
         mixin(func, Object(source));
 
-        each(methodNames, function(methodName, index) {
-          var method = methods[index];
-          if (isFunction(method)) {
-            func.prototype[methodName] = method;
+        each(pairs, function(pair) {
+          var value = pair[1];
+          if (isFunction(value)) {
+            func.prototype[pair[0]] = value;
           } else {
-            delete func.prototype[methodName];
+            delete func.prototype[pair[0]];
           }
         });
         return func;
       };
     },
+    'nthArg': function(nthArg) {
+      return function(n) {
+        var arity = n < 0 ? 1 : (toInteger(n) + 1);
+        return curry(nthArg(n), arity);
+      };
+    },
+    'rearg': function(rearg) {
+      return function(func, indexes) {
+        var arity = indexes ? indexes.length : 0;
+        return curry(rearg(func, indexes), arity);
+      };
+    },
     'runInContext': function(runInContext) {
       return function(context) {
-        return baseConvert(util, runInContext(context));
+        return baseConvert(util, runInContext(context), options);
       };
     }
   };
 
-  var wrap = function(name, func) {
-    var wrapper = wrappers[name];
-    if (wrapper) {
-      return wrapper(func);
-    }
-    if (mutateMap.array[name]) {
-      func = immutWrap(func, cloneArray);
-    }
-    else if (mutateMap.object[name]) {
-      func = immutWrap(func, createCloner(func));
-    }
-    else if (mutateMap.set[name]) {
-      func = immutWrap(func, cloneDeep);
-    }
-    var result;
-    each(mapping.caps, function(cap) {
-      each(mapping.aryMethod[cap], function(otherName) {
-        if (name == otherName) {
-          var indexes = mapping.iterateeRearg[name],
-              n = !isLib && mapping.aryIteratee[name];
+  /*--------------------------------------------------------------------------*/
 
-          result = ary(func, cap);
-          if (cap > 1 && !mapping.skipRearg[name]) {
-            result = rearg(result, mapping.methodRearg[name] || mapping.aryRearg[cap]);
-          }
-          if (indexes) {
-            result = iterateeRearg(result, indexes);
-          } else if (n) {
-            result = iterateeAry(result, n);
-          }
-          if (cap > 1) {
-            result = curry(result, cap);
-          }
+  /**
+   * Casts `func` to a function with an arity capped iteratee if needed.
+   *
+   * @private
+   * @param {string} name The name of the function to inspect.
+   * @param {Function} func The function to inspect.
+   * @returns {Function} Returns the cast function.
+   */
+  function castCap(name, func) {
+    if (config.cap) {
+      var indexes = mapping.iterateeRearg[name];
+      if (indexes) {
+        return iterateeRearg(func, indexes);
+      }
+      var n = !isLib && mapping.iterateeAry[name];
+      if (n) {
+        return iterateeAry(func, n);
+      }
+    }
+    return func;
+  }
+
+  /**
+   * Casts `func` to a curried function if needed.
+   *
+   * @private
+   * @param {string} name The name of the function to inspect.
+   * @param {Function} func The function to inspect.
+   * @param {number} n The arity of `func`.
+   * @returns {Function} Returns the cast function.
+   */
+  function castCurry(name, func, n) {
+    return (forceCurry || (config.curry && n > 1))
+      ? curry(func, n)
+      : func;
+  }
+
+  /**
+   * Casts `func` to a fixed arity function if needed.
+   *
+   * @private
+   * @param {string} name The name of the function to inspect.
+   * @param {Function} func The function to inspect.
+   * @param {number} n The arity cap.
+   * @returns {Function} Returns the cast function.
+   */
+  function castFixed(name, func, n) {
+    if (config.fixed && (forceFixed || !mapping.skipFixed[name])) {
+      var data = mapping.methodSpread[name],
+          start = data && data.start;
+
+      return start  === undefined ? ary(func, n) : flatSpread(func, start);
+    }
+    return func;
+  }
+
+  /**
+   * Casts `func` to an rearged function if needed.
+   *
+   * @private
+   * @param {string} name The name of the function to inspect.
+   * @param {Function} func The function to inspect.
+   * @param {number} n The arity of `func`.
+   * @returns {Function} Returns the cast function.
+   */
+  function castRearg(name, func, n) {
+    return (config.rearg && n > 1 && (forceRearg || !mapping.skipRearg[name]))
+      ? rearg(func, mapping.methodRearg[name] || mapping.aryRearg[n])
+      : func;
+  }
+
+  /**
+   * Creates a clone of `object` by `path`.
+   *
+   * @private
+   * @param {Object} object The object to clone.
+   * @param {Array|string} path The path to clone by.
+   * @returns {Object} Returns the cloned object.
+   */
+  function cloneByPath(object, path) {
+    path = toPath(path);
+
+    var index = -1,
+        length = path.length,
+        lastIndex = length - 1,
+        result = clone(Object(object)),
+        nested = result;
+
+    while (nested != null && ++index < length) {
+      var key = path[index],
+          value = nested[key];
+
+      if (value != null &&
+          !(isFunction(value) || isError(value) || isWeakMap(value))) {
+        nested[key] = clone(index == lastIndex ? value : Object(value));
+      }
+      nested = nested[key];
+    }
+    return result;
+  }
+
+  /**
+   * Converts `lodash` to an immutable auto-curried iteratee-first data-last
+   * version with conversion `options` applied.
+   *
+   * @param {Object} [options] The options object. See `baseConvert` for more details.
+   * @returns {Function} Returns the converted `lodash`.
+   */
+  function convertLib(options) {
+    return _.runInContext.convert(options)(undefined);
+  }
+
+  /**
+   * Create a converter function for `func` of `name`.
+   *
+   * @param {string} name The name of the function to convert.
+   * @param {Function} func The function to convert.
+   * @returns {Function} Returns the new converter function.
+   */
+  function createConverter(name, func) {
+    var realName = mapping.aliasToReal[name] || name,
+        methodName = mapping.remap[realName] || realName,
+        oldOptions = options;
+
+    return function(options) {
+      var newUtil = isLib ? pristine : helpers,
+          newFunc = isLib ? pristine[methodName] : func,
+          newOptions = assign(assign({}, oldOptions), options);
+
+      return baseConvert(newUtil, realName, newFunc, newOptions);
+    };
+  }
+
+  /**
+   * Creates a function that wraps `func` to invoke its iteratee, with up to `n`
+   * arguments, ignoring any additional arguments.
+   *
+   * @private
+   * @param {Function} func The function to cap iteratee arguments for.
+   * @param {number} n The arity cap.
+   * @returns {Function} Returns the new function.
+   */
+  function iterateeAry(func, n) {
+    return overArg(func, function(func) {
+      return typeof func == 'function' ? baseAry(func, n) : func;
+    });
+  }
+
+  /**
+   * Creates a function that wraps `func` to invoke its iteratee with arguments
+   * arranged according to the specified `indexes` where the argument value at
+   * the first index is provided as the first argument, the argument value at
+   * the second index is provided as the second argument, and so on.
+   *
+   * @private
+   * @param {Function} func The function to rearrange iteratee arguments for.
+   * @param {number[]} indexes The arranged argument indexes.
+   * @returns {Function} Returns the new function.
+   */
+  function iterateeRearg(func, indexes) {
+    return overArg(func, function(func) {
+      var n = indexes.length;
+      return baseArity(rearg(baseAry(func, n), indexes), n);
+    });
+  }
+
+  /**
+   * Creates a function that invokes `func` with its first argument transformed.
+   *
+   * @private
+   * @param {Function} func The function to wrap.
+   * @param {Function} transform The argument transform.
+   * @returns {Function} Returns the new function.
+   */
+  function overArg(func, transform) {
+    return function() {
+      var length = arguments.length;
+      if (!length) {
+        return func();
+      }
+      var args = Array(length);
+      while (length--) {
+        args[length] = arguments[length];
+      }
+      var index = config.rearg ? 0 : (length - 1);
+      args[index] = transform(args[index]);
+      return func.apply(undefined, args);
+    };
+  }
+
+  /**
+   * Creates a function that wraps `func` and applys the conversions
+   * rules by `name`.
+   *
+   * @private
+   * @param {string} name The name of the function to wrap.
+   * @param {Function} func The function to wrap.
+   * @returns {Function} Returns the converted function.
+   */
+  function wrap(name, func, placeholder) {
+    var result,
+        realName = mapping.aliasToReal[name] || name,
+        wrapped = func,
+        wrapper = wrappers[realName];
+
+    if (wrapper) {
+      wrapped = wrapper(func);
+    }
+    else if (config.immutable) {
+      if (mapping.mutate.array[realName]) {
+        wrapped = wrapImmutable(func, cloneArray);
+      }
+      else if (mapping.mutate.object[realName]) {
+        wrapped = wrapImmutable(func, createCloner(func));
+      }
+      else if (mapping.mutate.set[realName]) {
+        wrapped = wrapImmutable(func, cloneByPath);
+      }
+    }
+    each(aryMethodKeys, function(aryKey) {
+      each(mapping.aryMethod[aryKey], function(otherName) {
+        if (realName == otherName) {
+          var data = mapping.methodSpread[realName],
+              afterRearg = data && data.afterRearg;
+
+          result = afterRearg
+            ? castFixed(realName, castRearg(realName, wrapped, aryKey), aryKey)
+            : castRearg(realName, castFixed(realName, wrapped, aryKey), aryKey);
+
+          result = castCap(realName, result);
+          result = castCurry(realName, result, aryKey);
           return false;
         }
       });
       return !result;
     });
 
-    result || (result = func);
-    if (mapping.placeholder[name]) {
-      result.placeholder = placeholder;
+    result || (result = wrapped);
+    if (result == func) {
+      result = forceCurry ? curry(result, 1) : function() {
+        return func.apply(this, arguments);
+      };
     }
-    return result;
-  };
+    result.convert = createConverter(realName, func);
+    result.placeholder = func.placeholder = placeholder;
 
-  if (!isLib) {
-    return wrap(name, func);
+    return result;
   }
-  // Iterate over methods for the current ary cap.
+
+  /*--------------------------------------------------------------------------*/
+
+  if (!isObj) {
+    return wrap(name, func, defaultHolder);
+  }
+  var _ = func;
+
+  // Convert methods by ary cap.
   var pairs = [];
-  each(mapping.caps, function(cap) {
-    each(mapping.aryMethod[cap], function(key) {
-      var func = _[mapping.key[key] || key];
+  each(aryMethodKeys, function(aryKey) {
+    each(mapping.aryMethod[aryKey], function(key) {
+      var func = _[mapping.remap[key] || key];
       if (func) {
-        pairs.push([key, wrap(key, func)]);
+        pairs.push([key, wrap(key, func, _)]);
       }
     });
   });
 
+  // Convert remaining methods.
+  each(keys(_), function(key) {
+    var func = _[key];
+    if (typeof func == 'function') {
+      var length = pairs.length;
+      while (length--) {
+        if (pairs[length][0] == key) {
+          return;
+        }
+      }
+      func.convert = createConverter(key, func);
+      pairs.push([key, func]);
+    }
+  });
+
   // Assign to `_` leaving `_.prototype` unchanged to allow chaining.
   each(pairs, function(pair) {
     _[pair[0]] = pair[1];
   });
 
-  // Wrap the lodash method and its aliases.
+  _.convert = convertLib;
+  _.placeholder = _;
+
+  // Assign aliases.
   each(keys(_), function(key) {
-    each(mapping.alias[key] || [], function(alias) {
+    each(mapping.realToAlias[key] || [], function(alias) {
       _[alias] = _[key];
     });
   });

fp/_convertBrowser.js

@@ -1,13 +1,18 @@
 var baseConvert = require('./_baseConvert');
 
 /**
- * Converts `lodash` to an immutable auto-curried iteratee-first data-last version.
+ * Converts `lodash` to an immutable auto-curried iteratee-first data-last
+ * version with conversion `options` applied.
  *
- * @param {Function} lodash The lodash function.
+ * @param {Function} lodash The lodash function to convert.
+ * @param {Object} [options] The options object. See `baseConvert` for more details.
  * @returns {Function} Returns the converted `lodash`.
  */
-function browserConvert(lodash) {
-  return baseConvert(lodash, lodash);
+function browserConvert(lodash, options) {
+  return baseConvert(lodash, lodash, options);
 }
 
+if (typeof _ == 'function' && typeof _.runInContext == 'function') {
+  _ = browserConvert(_.runInContext());
+}
 module.exports = browserConvert;

fp/_mapping.js

@@ -1,202 +1,358 @@
-module.exports = {
+/** Used to map aliases to their real names. */
+exports.aliasToReal = {
 
-  /** Used to map method names to their aliases. */
-  'alias': {
-    'ary': ['nAry'],
-    'assignIn': ['extend'],
-    'assignInWith': ['extendWith'],
-    'filter': ['whereEq'],
-    'flatten': ['unnest'],
-    'flow': ['pipe'],
-    'flowRight': ['compose'],
-    'forEach': ['each'],
-    'forEachRight': ['eachRight'],
-    'get': ['path', 'prop'],
-    'getOr': ['pathOr', 'propOr'],
-    'head': ['first'],
-    'includes': ['contains'],
-    'initial': ['init'],
-    'isEqual': ['equals'],
-    'mapValues': ['mapObj'],
-    'matchesProperty': ['pathEq'],
-    'omit': ['dissoc', 'omitAll'],
-    'overArgs': ['useWith'],
-    'overEvery': ['allPass'],
-    'overSome': ['somePass'],
-    'pick': ['pickAll'],
-    'propertyOf': ['propOf'],
-    'rest': ['unapply'],
-    'some': ['all'],
-    'spread': ['apply'],
-    'zipObject': ['zipObj']
+  // Lodash aliases.
+  'each': 'forEach',
+  'eachRight': 'forEachRight',
+  'entries': 'toPairs',
+  'entriesIn': 'toPairsIn',
+  'extend': 'assignIn',
+  'extendAll': 'assignInAll',
+  'extendAllWith': 'assignInAllWith',
+  'extendWith': 'assignInWith',
+  'first': 'head',
+
+  // Methods that are curried variants of others.
+  'conforms': 'conformsTo',
+  'matches': 'isMatch',
+  'property': 'get',
+
+  // Ramda aliases.
+  '__': 'placeholder',
+  'F': 'stubFalse',
+  'T': 'stubTrue',
+  'all': 'every',
+  'allPass': 'overEvery',
+  'always': 'constant',
+  'any': 'some',
+  'anyPass': 'overSome',
+  'apply': 'spread',
+  'assoc': 'set',
+  'assocPath': 'set',
+  'complement': 'negate',
+  'compose': 'flowRight',
+  'contains': 'includes',
+  'dissoc': 'unset',
+  'dissocPath': 'unset',
+  'dropLast': 'dropRight',
+  'dropLastWhile': 'dropRightWhile',
+  'equals': 'isEqual',
+  'identical': 'eq',
+  'indexBy': 'keyBy',
+  'init': 'initial',
+  'invertObj': 'invert',
+  'juxt': 'over',
+  'omitAll': 'omit',
+  'nAry': 'ary',
+  'path': 'get',
+  'pathEq': 'matchesProperty',
+  'pathOr': 'getOr',
+  'paths': 'at',
+  'pickAll': 'pick',
+  'pipe': 'flow',
+  'pluck': 'map',
+  'prop': 'get',
+  'propEq': 'matchesProperty',
+  'propOr': 'getOr',
+  'props': 'at',
+  'symmetricDifference': 'xor',
+  'symmetricDifferenceBy': 'xorBy',
+  'symmetricDifferenceWith': 'xorWith',
+  'takeLast': 'takeRight',
+  'takeLastWhile': 'takeRightWhile',
+  'unapply': 'rest',
+  'unnest': 'flatten',
+  'useWith': 'overArgs',
+  'where': 'conformsTo',
+  'whereEq': 'isMatch',
+  'zipObj': 'zipObject'
+};
+
+/** Used to map ary to method names. */
+exports.aryMethod = {
+  '1': [
+    'assignAll', 'assignInAll', 'attempt', 'castArray', 'ceil', 'create',
+    'curry', 'curryRight', 'defaultsAll', 'defaultsDeepAll', 'floor', 'flow',
+    'flowRight', 'fromPairs', 'invert', 'iteratee', 'memoize', 'method', 'mergeAll',
+    'methodOf', 'mixin', 'nthArg', 'over', 'overEvery', 'overSome','rest', 'reverse',
+    'round', 'runInContext', 'spread', 'template', 'trim', 'trimEnd', 'trimStart',
+    'uniqueId', 'words', 'zipAll'
+  ],
+  '2': [
+    'add', 'after', 'ary', 'assign', 'assignAllWith', 'assignIn', 'assignInAllWith',
+    'at', 'before', 'bind', 'bindAll', 'bindKey', 'chunk', 'cloneDeepWith',
+    'cloneWith', 'concat', 'conformsTo', 'countBy', 'curryN', 'curryRightN',
+    'debounce', 'defaults', 'defaultsDeep', 'defaultTo', 'delay', 'difference',
+    'divide', 'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq',
+    'every', 'filter', 'find', 'findIndex', 'findKey', 'findLast', 'findLastIndex',
+    'findLastKey', 'flatMap', 'flatMapDeep', 'flattenDepth', 'forEach',
+    'forEachRight', 'forIn', 'forInRight', 'forOwn', 'forOwnRight', 'get',
+    'groupBy', 'gt', 'gte', 'has', 'hasIn', 'includes', 'indexOf', 'intersection',
+    'invertBy', 'invoke', 'invokeMap', 'isEqual', 'isMatch', 'join', 'keyBy',
+    'lastIndexOf', 'lt', 'lte', 'map', 'mapKeys', 'mapValues', 'matchesProperty',
+    'maxBy', 'meanBy', 'merge', 'mergeAllWith', 'minBy', 'multiply', 'nth', 'omit',
+    'omitBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt', 'partial',
+    'partialRight', 'partition', 'pick', 'pickBy', 'propertyOf', 'pull', 'pullAll',
+    'pullAt', 'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove',
+    'repeat', 'restFrom', 'result', 'sampleSize', 'some', 'sortBy', 'sortedIndex',
+    'sortedIndexOf', 'sortedLastIndex', 'sortedLastIndexOf', 'sortedUniqBy',
+    'split', 'spreadFrom', 'startsWith', 'subtract', 'sumBy', 'take', 'takeRight',
+    'takeRightWhile', 'takeWhile', 'tap', 'throttle', 'thru', 'times', 'trimChars',
+    'trimCharsEnd', 'trimCharsStart', 'truncate', 'union', 'uniqBy', 'uniqWith',
+    'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip', 'zipObject',
+    'zipObjectDeep'
+  ],
+  '3': [
+    'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
+    'findFrom', 'findIndexFrom', 'findLastFrom', 'findLastIndexFrom', 'getOr',
+    'includesFrom', 'indexOfFrom', 'inRange', 'intersectionBy', 'intersectionWith',
+    'invokeArgs', 'invokeArgsMap', 'isEqualWith', 'isMatchWith', 'flatMapDepth',
+    'lastIndexOfFrom', 'mergeWith', 'orderBy', 'padChars', 'padCharsEnd',
+    'padCharsStart', 'pullAllBy', 'pullAllWith', 'rangeStep', 'rangeStepRight',
+    'reduce', 'reduceRight', 'replace', 'set', 'slice', 'sortedIndexBy',
+    'sortedLastIndexBy', 'transform', 'unionBy', 'unionWith', 'update', 'xorBy',
+    'xorWith', 'zipWith'
+  ],
+  '4': [
+    'fill', 'setWith', 'updateWith'
+  ]
+};
+
+/** Used to map ary to rearg configs. */
+exports.aryRearg = {
+  '2': [1, 0],
+  '3': [2, 0, 1],
+  '4': [3, 2, 0, 1]
+};
+
+/** Used to map method names to their iteratee ary. */
+exports.iterateeAry = {
+  'dropRightWhile': 1,
+  'dropWhile': 1,
+  'every': 1,
+  'filter': 1,
+  'find': 1,
+  'findFrom': 1,
+  'findIndex': 1,
+  'findIndexFrom': 1,
+  'findKey': 1,
+  'findLast': 1,
+  'findLastFrom': 1,
+  'findLastIndex': 1,
+  'findLastIndexFrom': 1,
+  'findLastKey': 1,
+  'flatMap': 1,
+  'flatMapDeep': 1,
+  'flatMapDepth': 1,
+  'forEach': 1,
+  'forEachRight': 1,
+  'forIn': 1,
+  'forInRight': 1,
+  'forOwn': 1,
+  'forOwnRight': 1,
+  'map': 1,
+  'mapKeys': 1,
+  'mapValues': 1,
+  'partition': 1,
+  'reduce': 2,
+  'reduceRight': 2,
+  'reject': 1,
+  'remove': 1,
+  'some': 1,
+  'takeRightWhile': 1,
+  'takeWhile': 1,
+  'times': 1,
+  'transform': 2
+};
+
+/** Used to map method names to iteratee rearg configs. */
+exports.iterateeRearg = {
+  'mapKeys': [1],
+  'reduceRight': [1, 0]
+};
+
+/** Used to map method names to rearg configs. */
+exports.methodRearg = {
+  'assignInAllWith': [1, 0],
+  'assignInWith': [1, 2, 0],
+  'assignAllWith': [1, 0],
+  'assignWith': [1, 2, 0],
+  'differenceBy': [1, 2, 0],
+  'differenceWith': [1, 2, 0],
+  'getOr': [2, 1, 0],
+  'intersectionBy': [1, 2, 0],
+  'intersectionWith': [1, 2, 0],
+  'isEqualWith': [1, 2, 0],
+  'isMatchWith': [2, 1, 0],
+  'mergeAllWith': [1, 0],
+  'mergeWith': [1, 2, 0],
+  'padChars': [2, 1, 0],
+  'padCharsEnd': [2, 1, 0],
+  'padCharsStart': [2, 1, 0],
+  'pullAllBy': [2, 1, 0],
+  'pullAllWith': [2, 1, 0],
+  'rangeStep': [1, 2, 0],
+  'rangeStepRight': [1, 2, 0],
+  'setWith': [3, 1, 2, 0],
+  'sortedIndexBy': [2, 1, 0],
+  'sortedLastIndexBy': [2, 1, 0],
+  'unionBy': [1, 2, 0],
+  'unionWith': [1, 2, 0],
+  'updateWith': [3, 1, 2, 0],
+  'xorBy': [1, 2, 0],
+  'xorWith': [1, 2, 0],
+  'zipWith': [1, 2, 0]
+};
+
+/** Used to map method names to spread configs. */
+exports.methodSpread = {
+  'assignAll': { 'start': 0 },
+  'assignAllWith': { 'start': 0 },
+  'assignInAll': { 'start': 0 },
+  'assignInAllWith': { 'start': 0 },
+  'defaultsAll': { 'start': 0 },
+  'defaultsDeepAll': { 'start': 0 },
+  'invokeArgs': { 'start': 2 },
+  'invokeArgsMap': { 'start': 2 },
+  'mergeAll': { 'start': 0 },
+  'mergeAllWith': { 'start': 0 },
+  'partial': { 'start': 1 },
+  'partialRight': { 'start': 1 },
+  'without': { 'start': 1 },
+  'zipAll': { 'start': 0 }
+};
+
+/** Used to identify methods which mutate arrays or objects. */
+exports.mutate = {
+  'array': {
+    'fill': true,
+    'pull': true,
+    'pullAll': true,
+    'pullAllBy': true,
+    'pullAllWith': true,
+    'pullAt': true,
+    'remove': true,
+    'reverse': true
   },
-
-  /** Used to map method names to their iteratee ary. */
-  'aryIteratee': {
-    'assignWith': 2,
-    'assignInWith': 2,
-    'cloneDeepWith': 1,
-    'cloneWith': 1,
-    'dropRightWhile': 1,
-    'dropWhile': 1,
-    'every': 1,
-    'filter': 1,
-    'find': 1,
-    'findIndex': 1,
-    'findKey': 1,
-    'findLast': 1,
-    'findLastIndex': 1,
-    'findLastKey': 1,
-    'flatMap': 1,
-    'forEach': 1,
-    'forEachRight': 1,
-    'forIn': 1,
-    'forInRight': 1,
-    'forOwn': 1,
-    'forOwnRight': 1,
-    'isEqualWith': 2,
-    'isMatchWith': 2,
-    'map': 1,
-    'mapKeys': 1,
-    'mapValues': 1,
-    'partition': 1,
-    'reduce': 2,
-    'reduceRight': 2,
-    'reject': 1,
-    'remove': 1,
-    'some': 1,
-    'takeRightWhile': 1,
-    'takeWhile': 1,
-    'times': 1,
-    'transform': 2
-  },
-
-  /** Used to map ary to method names. */
-  'aryMethod': {
-    1:[
-        'attempt', 'ceil', 'create', 'curry', 'curryRight', 'floor', 'fromPairs',
-        'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin', 'over',
-        'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
-        'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
-      ],
-    2:[
-        'add', 'after', 'ary', 'assign', 'at', 'before', 'bind', 'bindKey',
-        'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
-        'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
-        'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq',
-        'every', 'extend', 'filter', 'find', 'find', 'findIndex', 'findKey',
-        'findLast', 'findLastIndex', 'findLastKey', 'flatMap', 'forEach',
-        'forEachRight', 'forIn', 'forInRight', 'forOwn', 'forOwnRight', 'get',
-        'groupBy', 'gt', 'gte', 'has', 'hasIn', 'includes', 'indexOf', 'intersection',
-        'invoke', 'invokeMap', 'isEqual', 'isMatch', 'join', 'keyBy', 'lastIndexOf',
-        'lt', 'lte', 'map', 'mapKeys', 'mapValues', 'matchesProperty', 'maxBy',
-        'merge', 'minBy', 'omit', 'omitBy', 'orderBy', 'overArgs', 'pad', 'padEnd',
-        'padStart', 'parseInt', 'partition', 'pick', 'pickBy', 'pull', 'pullAll',
-        'pullAt', 'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove',
-        'repeat', 'result', 'sampleSize', 'some', 'sortBy', 'sortedIndex',
-        'sortedIndexOf', 'sortedLastIndex', 'sortedLastIndexOf', 'sortedUniqBy',
-        'split', 'startsWith', 'subtract', 'sumBy', 'take', 'takeRight', 'takeRightWhile',
-        'takeWhile', 'tap', 'throttle', 'thru', 'times', 'truncate', 'union', 'uniqBy',
-        'uniqWith', 'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip', 'zipObject'
-      ],
-    3:[
-        'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
-        'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
-        'isMatchWith', 'mergeWith', 'pullAllBy', 'reduce', 'reduceRight', 'replace',
-        'set', 'slice', 'sortedIndexBy', 'sortedLastIndexBy', 'transform', 'unionBy',
-        'unionWith', 'xorBy', 'xorWith', 'zipWith'
-      ],
-    4:[
-        'fill', 'setWith'
-      ]
-  },
-
-  /** Used to map ary to rearg configs. */
-  'aryRearg': {
-    2: [1, 0],
-    3: [2, 1, 0],
-    4: [3, 2, 0, 1]
-  },
-
-  /** Used to map method names to iteratee rearg configs. */
-  'iterateeRearg': {
-    'findKey': [1],
-    'findLastKey': [1],
-    'mapKeys': [1]
-  },
-
-  /** Used to map method names to rearg configs. */
-  'methodRearg': {
-    'clamp': [2, 0, 1],
-    'reduce': [2, 0, 1],
-    'reduceRight': [2, 0, 1],
-    'set': [2, 0, 1],
-    'setWith': [3, 1, 2, 0],
-    'slice': [2, 0, 1],
-    'transform': [2, 0, 1]
-  },
-
-  /** Used to iterate `mapping.aryMethod` keys. */
-  'caps': [1, 2, 3, 4],
-
-  /** Used to map keys to other keys. */
-  'key': {
-    'curryN': 'curry',
-    'curryRightN': 'curryRight',
-    'getOr': 'get'
-  },
-
-  /** Used to identify methods which mutate arrays or objects. */
-  'mutate': {
-    'array': {
-      'fill': true,
-      'pull': true,
-      'pullAll': true,
-      'pullAllBy': true,
-      'pullAt': true,
-      'remove': true,
-      'reverse': true
-    },
-    'object': {
-      'assign': true,
-      'assignIn': true,
-      'assignInWith': true,
-      'assignWith': true,
-      'defaults': true,
-      'defaultsDeep': true,
-      'merge': true,
-      'mergeWith': true
-    },
-    'set': {
-      'set': true,
-      'setWith': true
-    }
-  },
-
-  /** Used to track methods with placeholder support */
-  'placeholder': {
-    'bind': true,
-    'bindKey': true,
-    'curry': true,
-    'curryRight': true,
-    'partial': true,
-    'partialRight': true
-  },
-
-  /** Used to track methods that skip `_.rearg`. */
-  'skipRearg': {
+  'object': {
     'assign': true,
+    'assignAll': true,
+    'assignAllWith': true,
     'assignIn': true,
-    'concat': true,
+    'assignInAll': true,
+    'assignInAllWith': true,
+    'assignInWith': true,
+    'assignWith': true,
     'defaults': true,
+    'defaultsAll': true,
     'defaultsDeep': true,
-    'difference': true,
-    'matchesProperty': true,
+    'defaultsDeepAll': true,
     'merge': true,
-    'random': true,
-    'range': true,
-    'rangeRight': true,
-    'zip': true,
-    'zipObject': true
+    'mergeAll': true,
+    'mergeAllWith': true,
+    'mergeWith': true,
+  },
+  'set': {
+    'set': true,
+    'setWith': true,
+    'unset': true,
+    'update': true,
+    'updateWith': true
   }
 };
+
+/** Used to map real names to their aliases. */
+exports.realToAlias = (function() {
+  var hasOwnProperty = Object.prototype.hasOwnProperty,
+      object = exports.aliasToReal,
+      result = {};
+
+  for (var key in object) {
+    var value = object[key];
+    if (hasOwnProperty.call(result, value)) {
+      result[value].push(key);
+    } else {
+      result[value] = [key];
+    }
+  }
+  return result;
+}());
+
+/** Used to map method names to other names. */
+exports.remap = {
+  'assignAll': 'assign',
+  'assignAllWith': 'assignWith',
+  'assignInAll': 'assignIn',
+  'assignInAllWith': 'assignInWith',
+  'curryN': 'curry',
+  'curryRightN': 'curryRight',
+  'defaultsAll': 'defaults',
+  'defaultsDeepAll': 'defaultsDeep',
+  'findFrom': 'find',
+  'findIndexFrom': 'findIndex',
+  'findLastFrom': 'findLast',
+  'findLastIndexFrom': 'findLastIndex',
+  'getOr': 'get',
+  'includesFrom': 'includes',
+  'indexOfFrom': 'indexOf',
+  'invokeArgs': 'invoke',
+  'invokeArgsMap': 'invokeMap',
+  'lastIndexOfFrom': 'lastIndexOf',
+  'mergeAll': 'merge',
+  'mergeAllWith': 'mergeWith',
+  'padChars': 'pad',
+  'padCharsEnd': 'padEnd',
+  'padCharsStart': 'padStart',
+  'propertyOf': 'get',
+  'rangeStep': 'range',
+  'rangeStepRight': 'rangeRight',
+  'restFrom': 'rest',
+  'spreadFrom': 'spread',
+  'trimChars': 'trim',
+  'trimCharsEnd': 'trimEnd',
+  'trimCharsStart': 'trimStart',
+  'zipAll': 'zip'
+};
+
+/** Used to track methods that skip fixing their arity. */
+exports.skipFixed = {
+  'castArray': true,
+  'flow': true,
+  'flowRight': true,
+  'iteratee': true,
+  'mixin': true,
+  'rearg': true,
+  'runInContext': true
+};
+
+/** Used to track methods that skip rearranging arguments. */
+exports.skipRearg = {
+  'add': true,
+  'assign': true,
+  'assignIn': true,
+  'bind': true,
+  'bindKey': true,
+  'concat': true,
+  'difference': true,
+  'divide': true,
+  'eq': true,
+  'gt': true,
+  'gte': true,
+  'isEqual': true,
+  'lt': true,
+  'lte': true,
+  'matchesProperty': true,
+  'merge': true,
+  'multiply': true,
+  'overArgs': true,
+  'partial': true,
+  'partialRight': true,
+  'propertyOf': true,
+  'random': true,
+  'range': true,
+  'rangeRight': true,
+  'subtract': true,
+  'zip': true,
+  'zipObject': true,
+  'zipObjectDeep': true
+};

fp/placeholder.js

@@ -0,0 +1,6 @@
+/**
+ * The default argument placeholder value for methods.
+ *
+ * @type {Object}
+ */
+module.exports = {};

lib/common/file.js

@@ -0,0 +1,71 @@
+'use strict';
+
+const _ = require('lodash');
+const fs = require('fs-extra');
+const glob = require('glob');
+const path = require('path');
+
+const minify = require('../common/minify.js');
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates a [fs.copy](https://github.com/jprichardson/node-fs-extra#copy)
+ * function with `srcPath` and `destPath` partially applied.
+ *
+ * @memberOf file
+ * @param {string} srcPath The path of the file to copy.
+ * @param {string} destPath The path to copy the file to.
+ * @returns {Function} Returns the partially applied function.
+ */
+function copy(srcPath, destPath) {
+  return _.partial(fs.copy, srcPath, destPath);
+}
+
+/**
+ * Creates an object of base name and compiled template pairs that match `pattern`.
+ *
+ * @memberOf file
+ * @param {string} pattern The glob pattern to be match.
+ * @returns {Object} Returns the object of compiled templates.
+ */
+function globTemplate(pattern) {
+  return _.transform(glob.sync(pattern), (result, filePath) => {
+    const key = path.basename(filePath, path.extname(filePath));
+    result[key] = _.template(fs.readFileSync(filePath, 'utf8'));
+  }, {});
+}
+
+/**
+ * Creates a `minify` function with `srcPath` and `destPath` partially applied.
+ *
+ * @memberOf file
+ * @param {string} srcPath The path of the file to minify.
+ * @param {string} destPath The path to write the file to.
+ * @returns {Function} Returns the partially applied function.
+ */
+function min(srcPath, destPath) {
+  return _.partial(minify, srcPath, destPath);
+}
+
+/**
+ * Creates a [fs.writeFile](https://nodejs.org/api/fs.html#fs_fs_writefile_file_data_options_callback)
+ * function with `filePath` and `data` partially applied.
+ *
+ * @memberOf file
+ * @param {string} destPath The path to write the file to.
+ * @param {string} data The data to write to the file.
+ * @returns {Function} Returns the partially applied function.
+ */
+function write(destPath, data) {
+  return _.partial(fs.writeFile, destPath, data);
+}
+
+/*----------------------------------------------------------------------------*/
+
+module.exports = {
+  copy,
+  globTemplate,
+  min,
+  write
+};

lib/common/mapping.js

@@ -0,0 +1,9 @@
+'use strict';
+
+const _mapping = require('../../fp/_mapping');
+const util = require('./util');
+const Hash = util.Hash;
+
+/*----------------------------------------------------------------------------*/
+
+module.exports = new Hash(_mapping);

lib/common/minify.js

@@ -1,26 +1,39 @@
 'use strict';
 
-var _ = require('lodash'),
-    fs = require('fs-extra'),
-    uglify = require('uglify-js');
+const _ = require('lodash');
+const fs = require('fs-extra');
+const uglify = require('uglify-js');
 
-var uglifyOptions = require('./uglify.options.js');
+const uglifyOptions = require('./uglify.options');
 
 /*----------------------------------------------------------------------------*/
 
-function minify(inpath, outpath, callback, options) {
-  if (_.isFunction(outpath)) {
+/**
+ * Asynchronously minifies the file at `srcPath`, writes it to `destPath`, and
+ * invokes `callback` upon completion. The callback is invoked with one argument:
+ * (error).
+ *
+ * If unspecified, `destPath` is `srcPath` with an extension of `.min.js`.
+ * (e.g. the `destPath` of `path/to/foo.js` would be `path/to/foo.min.js`)
+ *
+ * @param {string} srcPath The path of the file to minify.
+ * @param {string} [destPath] The path to write the file to.
+ * @param {Function} callback The function invoked upon completion.
+ * @param {Object} [option] The UglifyJS options object.
+ */
+function minify(srcPath, destPath, callback, options) {
+  if (_.isFunction(destPath)) {
     if (_.isObject(callback)) {
       options = callback;
     }
-    callback = outpath;
-    outpath = undefined;
+    callback = destPath;
+    destPath = undefined;
   }
-  if (!outpath) {
-    outpath = inpath.replace(/(?=\.js$)/, '.min');
+  if (!destPath) {
+    destPath = srcPath.replace(/(?=\.js$)/, '.min');
   }
-  var output = uglify.minify(inpath, _.defaults(options || {}, uglifyOptions));
-  fs.writeFile(outpath, output.code, 'utf-8', callback);
+  const output = uglify.minify(srcPath, _.defaults(options || {}, uglifyOptions));
+  fs.writeFile(destPath, output.code, 'utf-8', callback);
 }
 
 module.exports = minify;

lib/common/uglify.options.js

@@ -1,16 +1,22 @@
+'use strict';
+
+/**
+ * The UglifyJS options object for
+ * [compress](https://github.com/mishoo/UglifyJS2#compressor-options),
+ * [mangle](https://github.com/mishoo/UglifyJS2#mangler-options), and
+ * [output](https://github.com/mishoo/UglifyJS2#beautifier-options) options.
+ */
 module.exports = {
   'compress': {
+    'collapse_vars': true,
+    'negate_iife': false,
     'pure_getters': true,
     'unsafe': true,
-    'unsafe_comps': true,
     'warnings': false
   },
-  'mangle': {
-    'except': ['define']
-  },
   'output': {
     'ascii_only': true,
-    'comments': /^!|@cc_on|@license|@preserve/i,
+    'comments': /@license/,
     'max_line_len': 500
   }
 };

lib/common/util.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const _ = require('lodash');
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates a hash object. If a `properties` object is provided, its own
+ * enumerable properties are assigned to the created hash.
+ *
+ * @memberOf util
+ * @param {Object} [properties] The properties to assign to the hash.
+ * @returns {Object} Returns the new hash object.
+ */
+function Hash(properties) {
+  return _.transform(properties, (result, value, key) => {
+    result[key] = (_.isPlainObject(value) && !(value instanceof Hash))
+      ? new Hash(value)
+      : value;
+  }, this);
+}
+
+Hash.prototype = Object.create(null);
+
+/**
+ * This method throws any error it receives.
+ *
+ * @memberOf util
+ * @param {Object} [error] The error object.
+ */
+function pitch(error) {
+  if (error != null) {
+    throw error;
+  }
+}
+
+module.exports = {
+  Hash,
+  pitch
+};

lib/fp/build-dist.js

@@ -1,18 +1,19 @@
 'use strict';
 
-var _ = require('lodash'),
-    async = require('async'),
-    path = require('path'),
-    webpack = require('webpack');
+const _ = require('lodash');
+const async = require('async');
+const path = require('path');
+const webpack = require('webpack');
 
-var minify = require('../common/minify.js');
+const file = require('../common/file');
+const util = require('../common/util');
 
-var basePath = path.join(__dirname, '..', '..'),
-    distPath = path.join(basePath, 'dist'),
-    fpPath = path.join(basePath, 'fp'),
-    filename = 'lodash.fp.js';
+const basePath = path.join(__dirname, '..', '..');
+const distPath = path.join(basePath, 'dist');
+const fpPath = path.join(basePath, 'fp');
+const filename = 'lodash.fp.js';
 
-var fpConfig = {
+const fpConfig = {
   'entry': path.join(fpPath, '_convertBrowser.js'),
   'output': {
     'path': distPath,
@@ -26,7 +27,7 @@ var fpConfig = {
   ]
 };
 
-var mappingConfig = {
+const mappingConfig = {
   'entry': path.join(fpPath, '_mapping.js'),
   'output': {
     'path': distPath,
@@ -38,14 +39,18 @@ var mappingConfig = {
 
 /*----------------------------------------------------------------------------*/
 
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
+/**
+ * Creates browser builds of the FP converter and mappings at the `target` path.
+ *
+ * @private
+ * @param {string} target The output directory path.
+ */
+function build() {
+  async.series([
+    _.partial(webpack, mappingConfig),
+    _.partial(webpack, fpConfig),
+    file.min(path.join(distPath, filename))
+  ], util.pitch);
 }
 
-async.series([
-  _.partial(webpack, mappingConfig),
-  _.partial(webpack, fpConfig),
-  _.partial(minify, path.join(distPath, filename))
-], onComplete);
+build();

lib/fp/build-doc.js

@@ -0,0 +1,78 @@
+'use strict';
+
+const _ = require('lodash');
+const fs = require('fs-extra');
+const path = require('path');
+
+const file = require('../common/file');
+const mapping = require('../common/mapping');
+const util = require('../common/util');
+
+const templatePath = path.join(__dirname, 'template/doc');
+const template = file.globTemplate(path.join(templatePath, '*.jst'));
+
+const argNames = ['a', 'b', 'c', 'd'];
+
+const templateData = {
+  mapping,
+  toArgOrder,
+  toFuncList
+};
+
+/**
+ * Converts arranged argument `indexes` into a named argument string
+ * representation of their order.
+ *
+ * @private
+ * @param {number[]} indexes The arranged argument indexes.
+ * @returns {string} Returns the named argument string.
+ */
+function toArgOrder(indexes) {
+  const reordered = [];
+  _.each(indexes, (newIndex, index) => {
+    reordered[newIndex] = argNames[index];
+  });
+  return '`(' + reordered.join(', ') + ')`';
+}
+
+/**
+ * Converts `funcNames` into a chunked list string representation.
+ *
+ * @private
+ * @param {string[]} funcNames The function names.
+ * @returns {string} Returns the function list string.
+ */
+function toFuncList(funcNames) {
+  let chunks = _.chunk(funcNames.slice().sort(), 5);
+  let lastChunk = _.last(chunks);
+  const lastName = lastChunk ? lastChunk.pop() : undefined;
+
+  chunks = _.reject(chunks, _.isEmpty);
+  lastChunk = _.last(chunks);
+
+  let result = '`' + _.map(chunks, chunk => chunk.join('`, `') + '`').join(',\n`');
+  if (lastName == null) {
+    return result;
+  }
+  if (_.size(chunks) > 1 || _.size(lastChunk) > 1) {
+    result += ',';
+  }
+  result += ' &';
+  result += _.size(lastChunk) < 5 ? ' ' : '\n';
+  return result + '`' + lastName + '`';
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates the FP-Guide wiki at the `target` path.
+ *
+ * @private
+ * @param {string} target The output file path.
+ */
+function build(target) {
+  target = path.resolve(target);
+  fs.writeFile(target, template.wiki(templateData), util.pitch);
+}
+
+build(_.last(process.argv));

lib/fp/build-modules.js

@@ -0,0 +1,150 @@
+'use strict';
+
+const _ = require('lodash');
+const async = require('async');
+const glob = require('glob');
+const path = require('path');
+
+const file = require('../common/file');
+const mapping = require('../common/mapping');
+const util = require('../common/util');
+
+const templatePath = path.join(__dirname, 'template/modules');
+const template = file.globTemplate(path.join(templatePath, '*.jst'));
+
+const aryMethods = _.union(
+  mapping.aryMethod[1],
+  mapping.aryMethod[2],
+  mapping.aryMethod[3],
+  mapping.aryMethod[4]
+);
+
+const categories = [
+  'array',
+  'collection',
+  'date',
+  'function',
+  'lang',
+  'math',
+  'number',
+  'object',
+  'seq',
+  'string',
+  'util'
+];
+
+const ignored = [
+  '_*.js',
+  'core.js',
+  'core.min.js',
+  'fp.js',
+  'index.js',
+  'lodash.js',
+  'lodash.min.js'
+];
+
+/**
+ * Checks if `name` is a method alias.
+ *
+ * @private
+ * @param {string} name The name to check.
+ * @returns {boolean} Returns `true` if `name` is a method alias, else `false`.
+ */
+function isAlias(name) {
+  return _.has(mapping.aliasToReal, name);
+}
+
+/**
+ * Checks if `name` is a category name.
+ *
+ * @private
+ * @param {string} name The name to check.
+ * @returns {boolean} Returns `true` if `name` is a category name, else `false`.
+ */
+function isCategory(name) {
+  return _.includes(categories, name);
+}
+
+/**
+ * Checks if `name` belongs to a method that's passed thru and not wrapped.
+ *
+ * @private
+ * @param {string} name The name to check.
+ * @returns {boolean} Returns `true` if `name` is of a pass thru method,
+ *  else `false`.
+ */
+function isThru(name) {
+  return !_.includes(aryMethods, name);
+}
+
+/**
+ * Gets metadata for `func`.
+ *
+ * @private
+ * @param {Function} func The function to query.
+ * @returns {*} Returns the metadata for `func`.
+ */
+function getTemplate(moduleName) {
+  const data = {
+    'name': _.get(mapping.aliasToReal, moduleName, moduleName),
+    'mapping': mapping
+  };
+
+  if (isAlias(moduleName)) {
+    return template.alias(data);
+  }
+  if (isCategory(moduleName)) {
+    return template.category(data);
+  }
+  if (isThru(moduleName)) {
+    return template.thru(data);
+  }
+  return template.module(data);
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates FP modules at the `target` path.
+ *
+ * @private
+ * @param {string} target The output directory path.
+ */
+function build(target) {
+  target = path.resolve(target);
+
+  const fpPath = path.join(target, 'fp');
+
+  // Glob existing lodash module paths.
+  const modulePaths = glob.sync(path.join(target, '*.js'), {
+    'nodir': true,
+    'ignore': ignored.map(filename => {
+      return path.join(target, filename);
+    })
+  });
+
+  // Add FP alias and remapped module paths.
+  _.each([mapping.aliasToReal, mapping.remap], data => {
+    _.forOwn(data, (realName, alias) => {
+      const modulePath = path.join(target, alias + '.js');
+      if (!_.includes(modulePaths, modulePath)) {
+        modulePaths.push(modulePath);
+      }
+    });
+  });
+
+  const actions = modulePaths.map(modulePath => {
+    const moduleName = path.basename(modulePath, '.js');
+    return file.write(path.join(fpPath, moduleName + '.js'), getTemplate(moduleName));
+  });
+
+  actions.unshift(file.copy(path.join(__dirname, '../../fp'), fpPath));
+  actions.push(file.write(path.join(fpPath, '_falseOptions.js'), template._falseOptions()));
+  actions.push(file.write(path.join(fpPath, '_util.js'), template._util()));
+  actions.push(file.write(path.join(target, 'fp.js'), template.fp()));
+  actions.push(file.write(path.join(fpPath, 'convert.js'), template.convert()));
+
+  async.series(actions, util.pitch);
+}
+
+build(_.last(process.argv));

lib/fp/template/_util.jst

@@ -1,10 +0,0 @@
-module.exports = {
-  'ary': require('../ary'),
-  'cloneDeep': require('../cloneDeep'),
-  'curry': require('../curry'),
-  'forEach': require('../internal/arrayEach'),
-  'isFunction': require('../isFunction'),
-  'iteratee': require('../iteratee'),
-  'keys': require('../internal/baseKeys'),
-  'rearg': require('../rearg')
-};

lib/fp/template/doc/wiki.jst

@@ -0,0 +1,228 @@
+## lodash/fp
+
+The `lodash/fp` module promotes a more
+[functional programming](https://en.wikipedia.org/wiki/Functional_programming)
+(FP) friendly style by exporting an instance of `lodash` with its methods wrapped
+to produce immutable auto-curried iteratee-first data-last methods.
+
+## Installation
+
+In a browser:
+```html
+<script src='https://cdn.jsdelivr.net/g/lodash@4(lodash.min.js+lodash.fp.min.js)'></script>
+<script>
+// Loading `lodash.fp.js` converts `_` to its fp variant.
+_.defaults({ 'a': 2, 'b': 2 })({ 'a': 1 });
+// ➜ { 'a': 1, 'b': 2 }
+
+// Use `noConflict` to restore the pre-fp variant.
+var fp = _.noConflict();
+
+_.defaults({ 'a': 1 }, { 'a': 2, 'b': 2 });
+// ➜ { 'a': 1, 'b': 2 }
+fp.defaults({ 'a': 2, 'b': 2 })({ 'a': 1 });
+// ➜ { 'a': 1, 'b': 2 }
+</script>
+```
+
+In Node.js:
+```js
+// Load the fp build.
+var fp = require('lodash/fp');
+
+// Load a method category.
+var object = require('lodash/fp/object');
+
+// Load a single method for smaller builds with browserify/rollup/webpack.
+var extend = require('lodash/fp/extend');
+```
+
+## Mapping
+
+Immutable auto-curried iteratee-first data-last methods sound great, but what
+does that really mean for each method? Below is a breakdown of the mapping used
+to convert each method.
+
+#### Capped Iteratee Arguments
+
+Iteratee arguments are capped to avoid gotchas with variadic iteratees.
+```js
+// The `lodash/map` iteratee receives three arguments:
+// (value, index|key, collection)
+_.map(['6', '8', '10'], parseInt);
+// ➜ [6, NaN, 2]
+
+// The `lodash/fp/map` iteratee is capped at one argument:
+// (value)
+fp.map(parseInt)(['6', '8', '10']);
+// ➜ [6, 8, 10]
+```
+
+Methods that cap iteratees to one argument:<br>
+<%= toFuncList(_.keys(_.pickBy(mapping.iterateeAry, _.partial(_.eq, _, 1)))) %>
+
+Methods that cap iteratees to two arguments:<br>
+<%= toFuncList(_.keys(_.pickBy(mapping.iterateeAry, _.partial(_.eq, _, 2)))) %>
+
+The iteratee of `mapKeys` is capped to one argument: `(key)`
+
+#### Fixed Arity
+
+Methods have fixed arities to support auto-currying.
+```js
+// `lodash/padStart` accepts an optional `chars` param.
+_.padStart('a', 3, '-')
+// ➜ '--a'
+
+// `lodash/fp/padStart` does not.
+fp.padStart(3)('a');
+// ➜ '  a'
+fp.padCharsStart('-')(3)('a');
+// ➜ '--a'
+```
+
+Methods with a fixed arity of one:<br>
+<%= toFuncList(_.difference(mapping.aryMethod[1], _.keys(mapping.skipFixed))) %>
+
+Methods with a fixed arity of two:<br>
+<%= toFuncList(_.difference(mapping.aryMethod[2], _.keys(mapping.skipFixed))) %>
+
+Methods with a fixed arity of three:<br>
+<%= toFuncList(_.difference(mapping.aryMethod[3], _.keys(mapping.skipFixed))) %>
+
+Methods with a fixed arity of four:<br>
+<%= toFuncList(_.difference(mapping.aryMethod[4], _.keys(mapping.skipFixed))) %>
+
+#### Rearranged Arguments
+
+Method arguments are rearranged to make composition easier.
+```js
+// `lodash/filter` is data-first iteratee-last:
+// (collection, iteratee)
+var compact = _.partial(_.filter, _, Boolean);
+compact(['a', null, 'c']);
+// ➜ ['a', 'c']
+
+// `lodash/fp/filter` is iteratee-first data-last:
+// (iteratee, collection)
+var compact = fp.filter(Boolean);
+compact(['a', null, 'c']);
+// ➜ ['a', 'c']
+```
+
+##### Most methods follow these rules
+
+A fixed arity of two has an argument order of:<br>
+<%= toArgOrder(mapping.aryRearg[2]) %>
+
+A fixed arity of three has an argument order of:<br>
+<%= toArgOrder(mapping.aryRearg[3]) %>
+
+A fixed arity of four has an argument order of:<br>
+<%= toArgOrder(mapping.aryRearg[4]) %>
+
+##### Exceptions to the rules
+
+Methods that accept an array as their last, second to last, or only argument:<br>
+<%= toFuncList(_.keys(mapping.methodSpread)) %>
+
+Methods with unchanged argument orders:<br>
+<%= toFuncList(_.keys(mapping.skipRearg)) %>
+
+Methods with custom argument orders:<br>
+<%= _.map(_.keys(mapping.methodRearg), methodName => {
+  const orders = mapping.methodRearg[methodName];
+  return ' * `_.' + methodName + '` has an order of ' + toArgOrder(orders);
+}).join('\n') %>
+
+The iteratee of `reduceRight` has an argument order of: `(b, a)`
+
+#### New Methods
+
+Not all variadic methods have corresponding new method variants. Feel free to
+[request](https://github.com/lodash/lodash/blob/master/.github/CONTRIBUTING.md#feature-requests)
+any additions.
+
+Methods created to accommodate Lodash’s variadic methods:<br>
+<%= toFuncList(_.keys(mapping.remap)) %>
+
+#### Aliases
+
+There are <%= _.size(mapping.aliasToReal) %> method aliases:<br>
+<%= _.map(_.keys(mapping.aliasToReal).sort(), alias => {
+  const realName = mapping.aliasToReal[alias];
+  return ' * `_.' + alias + '` is an alias of `_.' + realName + '`';
+}).join('\n') %>
+
+## Placeholders
+
+The placeholder argument, which defaults to `_`, may be used to fill in method
+arguments in a different order. Placeholders are filled by the first available
+arguments of the curried returned function.
+```js
+// The equivalent of `2 > 5`.
+_.gt(2)(5);
+// ➜ false
+
+// The equivalent of `_.gt(5, 2)` or `5 > 2`.
+_.gt(_, 2)(5);
+// ➜ true
+```
+
+## Chaining
+
+The `lodash/fp` module **does not** convert chain sequence methods. See
+[Izaak Schroeder’s article](https://medium.com/making-internets/why-using-chain-is-a-mistake-9bc1f80d51ba)
+on using functional composition as an alternative to method chaining.
+
+## Convert
+
+Although `lodash/fp` & its method modules come pre-converted, there are times
+when you may want to customize the conversion. That’s when the `convert` method
+comes in handy.
+```js
+// Every option is `true` by default.
+var _fp = fp.convert({
+  // Specify capping iteratee arguments.
+  'cap': true,
+  // Specify currying.
+  'curry': true,
+  // Specify fixed arity.
+  'fixed': true,
+  // Specify immutable operations.
+  'immutable': true,
+  // Specify rearranging arguments.
+  'rearg': true
+});
+
+// The `convert` method is available on each method too.
+var mapValuesWithKey = fp.mapValues.convert({ 'cap': false });
+
+// Here’s an example of disabling iteratee argument caps to access the `key` param.
+mapValuesWithKey(function(value, key) {
+  return key == 'a' ? -1 : value;
+})({ 'a': 1, 'b': 1 });
+// => { 'a': -1, 'b': 1 }
+```
+
+Manual conversions are also possible with the `convert` module.
+```js
+var convert = require('lodash/fp/convert');
+
+// Convert by name.
+var assign = convert('assign', require('lodash.assign'));
+
+// Convert by object.
+var fp = convert({
+  'assign': require('lodash.assign'),
+  'chunk': require('lodash.chunk')
+});
+
+// Convert by `lodash` instance.
+var fp = convert(lodash.runInContext());
+```
+
+## Tooling
+
+Use [eslint-plugin-lodash-fp](https://www.npmjs.com/package/eslint-plugin-lodash-fp)
+to help use `lodash/fp` more efficiently.

lib/fp/template/modules/_falseOptions.jst

@@ -0,0 +1,7 @@
+module.exports = {
+  'cap': false,
+  'curry': false,
+  'fixed': false,
+  'immutable': false,
+  'rearg': false
+};

lib/fp/template/modules/_util.jst

@@ -0,0 +1,16 @@
+module.exports = {
+  'ary': require('../ary'),
+  'assign': require('../_baseAssign'),
+  'clone': require('../clone'),
+  'curry': require('../curry'),
+  'forEach': require('../_arrayEach'),
+  'isArray': require('../isArray'),
+  'isError': require('../isError'),
+  'isFunction': require('../isFunction'),
+  'isWeakMap': require('../isWeakMap'),
+  'iteratee': require('../iteratee'),
+  'keys': require('../_baseKeys'),
+  'rearg': require('../rearg'),
+  'toInteger': require('../toInteger'),
+  'toPath': require('../toPath')
+};

lib/fp/template/modules/alias.jst

@@ -0,0 +1 @@
+module.exports = require('./<%= name %>');

lib/fp/template/modules/category.jst

@@ -0,0 +1,2 @@
+var convert = require('./convert');
+module.exports = convert(require('../<%= name %>'));

lib/fp/template/modules/convert.jst

@@ -3,14 +3,16 @@ var baseConvert = require('./_baseConvert'),
 
 /**
  * Converts `func` of `name` to an immutable auto-curried iteratee-first data-last
- * version. If `name` is an object its methods will be converted.
+ * version with conversion `options` applied. If `name` is an object its methods
+ * will be converted.
  *
  * @param {string} name The name of the function to wrap.
  * @param {Function} [func] The function to wrap.
+ * @param {Object} [options] The options object. See `baseConvert` for more details.
  * @returns {Function|Object} Returns the converted function or object.
  */
-function convert(name, func) {
-  return baseConvert(util, name, func);
+function convert(name, func, options) {
+  return baseConvert(util, name, func, options);
 }
 
 module.exports = convert;

lib/fp/template/modules/fp.jst

@@ -0,0 +1,2 @@
+var _ = require('./lodash.min').runInContext();
+module.exports = require('./fp/_baseConvert')(_, _);

lib/fp/template/modules/module.jst

@@ -0,0 +1,5 @@
+var convert = require('./convert'),
+    func = convert('<%= name %>', require('../<%= _.get(mapping.remap, name, name) %>'));
+
+func.placeholder = require('./placeholder');
+module.exports = func;

lib/fp/template/modules/thru.jst

@@ -0,0 +1,5 @@
+var convert = require('./convert'),
+    func = convert('<%= name %>', require('../<%= _.get(mapping.remap, name, name) %>'), require('./_falseOptions'));
+
+func.placeholder = require('./placeholder');
+module.exports = func;

lib/main/build-dist.js

@@ -1,28 +1,31 @@
 'use strict';
 
-var _ = require('lodash'),
-    async = require('async'),
-    fs = require('fs-extra'),
-    path = require('path');
+const async = require('async');
+const path = require('path');
 
-var minify = require('../common/minify.js');
+const file = require('../common/file');
+const util = require('../common/util');
 
-var basePath = path.join(__dirname, '..', '..'),
-    distPath = path.join(basePath, 'dist'),
-    filename = 'lodash.js';
+const basePath = path.join(__dirname, '..', '..');
+const distPath = path.join(basePath, 'dist');
+const filename = 'lodash.js';
 
-var baseLodash = path.join(basePath, filename),
-    distLodash = path.join(distPath, filename);
+const baseLodash = path.join(basePath, filename);
+const distLodash = path.join(distPath, filename);
 
 /*----------------------------------------------------------------------------*/
 
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
+/**
+ * Creates browser builds of Lodash at the `target` path.
+ *
+ * @private
+ * @param {string} target The output directory path.
+ */
+function build() {
+  async.series([
+    file.copy(baseLodash, distLodash),
+    file.min(distLodash)
+  ], util.pitch);
 }
 
-async.series([
-  _.partial(fs.copy, baseLodash, distLodash),
-  _.partial(minify, distLodash)
-], onComplete);
+build();

lib/main/build-doc.js

@@ -0,0 +1,83 @@
+'use strict';
+
+const _ = require('lodash');
+const docdown = require('docdown');
+const fs = require('fs-extra');
+const path = require('path');
+
+const util = require('../common/util');
+
+const basePath = path.join(__dirname, '..', '..');
+const docPath = path.join(basePath, 'doc');
+const readmePath = path.join(docPath, 'README.md');
+
+const pkg = require('../../package.json');
+const version = pkg.version;
+
+const config = {
+  'base': {
+    'path': path.join(basePath, 'lodash.js'),
+    'title': `<a href="https://lodash.com/">lodash</a> <span>v${ version }</span>`,
+    'toc': 'categories',
+    'url': `https://github.com/lodash/lodash/blob/${ version }/lodash.js`
+  },
+  'github': {
+    'style': 'github',
+    'sublinks': [npmLink('&#x24C3;', 'See the npm package')]
+  },
+  'site': {
+    'entryLink': '<a href="${entryHref}" class="fa fa-link"></a>',
+    'sourceLink': '[source](${sourceHref})',
+    'tocHref': '',
+    'tocLink': '',
+    'sublinks': [npmLink('npm package')]
+  }
+};
+
+/**
+ * Composes a npm link from `text` and optional `title`.
+ *
+ * @private
+ * @param {string} text The link text.
+ * @param {string} [title] The link title.
+ * @returns {string} Returns the composed npm link.
+ */
+function npmLink(text, title) {
+  return (
+    '<% if (name == "templateSettings" || !/^(?:methods|properties|seq)$/i.test(category)) {' +
+      'print(' +
+        '"[' + text + '](https://www.npmjs.com/package/lodash." + name.toLowerCase() + ' +
+        '"' + (title == null ? '' : ' \\"' + title + '\\"') + ')"' +
+      ');' +
+    '} %>'
+  );
+}
+
+/**
+ * Post-process `markdown` to make adjustments.
+ *
+ * @private
+ * @param {string} markdown The markdown to process.
+ * @returns {string} Returns the processed markdown.
+ */
+function postprocess(markdown) {
+  // Wrap symbol property identifiers in brackets.
+  return markdown.replace(/\.(Symbol\.(?:[a-z]+[A-Z]?)+)/g, '[$1]');
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates the documentation markdown formatted for 'github' or 'site'.
+ *
+ * @private
+ * @param {string} type The format type.
+ */
+function build(type) {
+  const options = _.defaults({}, config.base, config[type]);
+  const markdown = docdown(options);
+
+  fs.writeFile(readmePath, postprocess(markdown), util.pitch);
+}
+
+build(_.last(process.argv));

lib/main/build-modules.js

@@ -0,0 +1,34 @@
+'use strict';
+
+const _ = require('lodash');
+const async = require('async');
+const path = require('path');
+
+const file = require('../common/file');
+const util = require('../common/util');
+
+const basePath = path.join(__dirname, '..', '..');
+const distPath = path.join(basePath, 'dist');
+
+const filePairs = [
+  [path.join(distPath, 'lodash.core.js'), 'core.js'],
+  [path.join(distPath, 'lodash.core.min.js'), 'core.min.js'],
+  [path.join(distPath, 'lodash.min.js'), 'lodash.min.js']
+];
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates supplementary Lodash modules at the `target` path.
+ *
+ * @private
+ * @param {string} target The output directory path.
+ */
+function build(target) {
+  const actions = _.map(filePairs, pair =>
+    file.copy(pair[0], path.join(target, pair[1])));
+
+  async.series(actions, util.pitch);
+}
+
+build(_.last(process.argv));

lib/main/build-site.js

@@ -0,0 +1,224 @@
+'use strict';
+
+const _ = require('lodash');
+const cheerio = require('cheerio');
+const fs = require('fs');
+const marky = require('marky-markdown');
+const path = require('path');
+const util = require('../common/util');
+
+const basePath = path.join(__dirname, '..', '..');
+const docPath = path.join(basePath, 'doc');
+const readmePath = path.join(docPath, 'README.md');
+
+const highlights = {
+  'html': [
+    'string'
+  ],
+  'js': [
+    'comment',
+    'console',
+    'delimiter',
+    'method',
+    'modifier',
+    'name',
+    'numeric',
+    'string',
+    'support',
+    'type'
+  ]
+};
+
+const exts = _.keys(highlights);
+
+/**
+ * Converts Lodash method references into documentation links.
+ *
+ * @private
+ * @param {Object} $ The Cheerio object.
+ */
+function autoLink($) {
+  $('.doc-container code').each(function() {
+    const $code = $(this);
+    const html = $code.html();
+    if (/^_\.\w+$/.test(html)) {
+      const id = html.split('.')[1];
+      $code.replaceWith(`<a href="#${ id }"><code>_.${ id }</code></a>`);
+    }
+  });
+}
+
+/**
+ * Removes horizontal rules from the document.
+ *
+ * @private
+ * @param {Object} $ The Cheerio object.
+ */
+function removeHorizontalRules($) {
+  $('hr').remove();
+}
+
+/**
+ * Removes marky-markdown specific ids and class names.
+ *
+ * @private
+ * @param {Object} $ The Cheerio object.
+ */
+function removeMarkyAttributes($) {
+  $('[id^="user-content-"]')
+    .attr('class', null)
+    .attr('id', null);
+
+  $(':header:not(h3) > a').each(function() {
+    const $a = $(this);
+    $a.replaceWith($a.html());
+  });
+}
+
+/**
+ * Renames "_" id and anchor references to "lodash".
+ *
+ * @private
+ * @param {Object} $ The Cheerio object.
+ */
+function renameLodashId($) {
+  $('#_').attr('id', 'lodash');
+  $('[href="#_"]').attr('href', '#lodash');
+}
+
+/**
+ * Repairs broken marky-markdown headers.
+ * See https://github.com/npm/marky-markdown/issues/217 for more details.
+ *
+ * @private
+ * @param {Object} $ The Cheerio object.
+ */
+function repairMarkyHeaders($) {
+  $('p:empty + h3').prev().remove();
+
+  $('h3 ~ p:empty').each(function() {
+    const $p = $(this);
+    let node = this.prev;
+    while ((node = node.prev) && node.name != 'h3' && node.name != 'p') {
+      $p.prepend(node.next);
+    }
+  });
+
+  $('h3 code em').parent().each(function() {
+    const $code = $(this);
+    $code.html($code.html().replace(/<\/?em>/g, '_'));
+  });
+}
+
+/**
+ * Cleans up highlights blocks by removing extraneous class names and elements.
+ *
+ * @private
+ * @param {Object} $ The Cheerio object.
+ */
+function tidyHighlights($) {
+  $('.highlight').each(function() {
+    let $spans;
+    const $parent = $(this);
+    const classes = $parent.find('.source,.text').first().attr('class').split(' ');
+    const ext = _(classes).intersection(exts).last();
+
+    $parent.addClass(ext);
+
+    // Remove line indicators for single line snippets.
+    $parent.children('pre').each(function() {
+      const $divs = $(this).children('div');
+      if ($divs.length == 1) {
+        $divs.replaceWith($divs.html());
+      }
+    });
+    // Remove extraneous class names.
+    $parent.find('[class]').each(function() {
+      const $element = $(this);
+      const classes = $element.attr('class').split(' ');
+      const attr = _(classes).intersection(highlights[ext]).join(' ');
+      $element.attr('class', attr || null);
+    });
+    // Collapse nested comment highlights.
+    $parent.find(`[class~="comment"]`).each(function() {
+      const $element = $(this);
+      $element.text($element.text().trim());
+    });
+    // Collapse nested string highlights.
+    $parent.find(`[class~="string"]`).each(function() {
+      const $element = $(this);
+      $element.text($element.text());
+    });
+    // Collapse nested spans.
+    while (($spans = $parent.find('span:not([class])')).length) {
+      $spans.each(function() {
+        let $span = $(this);
+        while ($span[0] && $span[0].name == 'span' && !$span.attr('class')) {
+          const $parent = $span.parent();
+          $span.replaceWith($span.html());
+          $span = $parent;
+        }
+      });
+    }
+  });
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates the documentation HTML.
+ *
+ * @private
+ */
+function build() {
+  const markdown = fs
+    // Load markdown.
+    .readFileSync(readmePath, 'utf8')
+    // Uncomment docdown HTML hints.
+    .replace(/(<)!--\s*|\s*--(>)/g, '$1$2')
+    // Convert source and npm package links to anchors.
+    .replace(/\[source\]\(([^)]+)\) \[npm package\]\(([^)]+)\)/g, (match, href1, href2) =>
+      `<p><a href="${ href1 }">source</a> <a href="${ href2 }">npm package</a></p>`
+    );
+
+  const $ = cheerio.load(marky(markdown, {
+    'enableHeadingLinkIcons': false,
+    'sanitize': false
+  }));
+
+  const $header = $('h1').first().remove();
+  const version = $header.find('span').first().text().trim().slice(1);
+
+  // Auto-link Lodash method references.
+  autoLink($);
+  // Rename "_" id references to "lodash".
+  renameLodashId($);
+  // Remove docdown horizontal rules.
+  removeHorizontalRules($);
+  // Remove marky-markdown attribute additions.
+  removeMarkyAttributes($);
+  // Repair marky-markdown wrapping around headers.
+  repairMarkyHeaders($);
+  // Cleanup highlights.
+  tidyHighlights($);
+
+  const html = [
+    // Append YAML front matter.
+    '---',
+    'id: docs',
+    'layout: docs',
+    'title: Lodash Documentation',
+    'version: ' + (version || null),
+    '---',
+    '',
+    // Wrap in raw tags to avoid Liquid template tag processing.
+    '{% raw %}',
+    $.html().trim(),
+    '{% endraw %}',
+    ''
+  ].join('\n');
+
+  fs.writeFile(path.join(docPath, version + '.html'), html, util.pitch);
+}
+
+build();

package.json

@@ -1,35 +1,66 @@
 {
   "name": "lodash",
-  "version": "4.0.1",
-  "main": "lodash.js",
+  "version": "4.17.21",
+  "license": "MIT",
   "private": true,
-  "devDependencies": {
-    "async": "^1.5.2",
-    "chalk": "^1.1.1",
-    "codecov.io": "~0.1.6",
-    "coveralls": "^2.11.6",
-    "curl-amd": "~0.8.12",
-    "docdown": "~0.3.0",
-    "dojo": "^1.10.4",
-    "ecstatic": "^1.4.0",
-    "fs-extra": "~0.26.4",
-    "glob": "^6.0.4",
-    "istanbul": "0.4.2",
-    "jquery": "^2.2.0",
-    "jscs": "^2.8.0",
-    "lodash": "^3.10.1",
-    "platform": "^1.3.1",
-    "qunit-extras": "^1.4.5",
-    "qunitjs": "~1.20.0",
-    "request": "^2.67.0",
-    "requirejs": "^2.1.22",
-    "sauce-tunnel": "2.3.0",
-    "uglify-js": "2.6.1",
-    "webpack": "^1.12.11"
+  "main": "lodash.js",
+  "engines": {
+    "node": ">=4.0.0"
   },
   "scripts": {
-    "build": "node lib/main/build-dist.js && node lib/fp/build-dist.js",
-    "style": "jscs lodash.js lib/**/*.js",
-    "test": "npm run build && node test/test && node test/test-fp"
+    "build": "npm run build:main && npm run build:fp",
+    "build:fp": "node lib/fp/build-dist.js",
+    "build:fp-modules": "node lib/fp/build-modules.js",
+    "build:main": "node lib/main/build-dist.js",
+    "build:main-modules": "node lib/main/build-modules.js",
+    "doc": "node lib/main/build-doc github && npm run test:doc",
+    "doc:fp": "node lib/fp/build-doc",
+    "doc:site": "node lib/main/build-doc site",
+    "doc:sitehtml": "optional-dev-dependency marky-markdown@^9.0.1 && npm run doc:site && node lib/main/build-site",
+    "pretest": "npm run build",
+    "style": "npm run style:main && npm run style:fp && npm run style:perf && npm run style:test",
+    "style:fp": "jscs fp/*.js lib/**/*.js",
+    "style:main": "jscs lodash.js",
+    "style:perf": "jscs perf/*.js perf/**/*.js",
+    "style:test": "jscs test/*.js test/**/*.js",
+    "test": "npm run test:main && npm run test:fp",
+    "test:doc": "markdown-doctest doc/*.md",
+    "test:fp": "node test/test-fp",
+    "test:main": "node test/test",
+    "validate": "npm run style && npm run test"
+  },
+  "devDependencies": {
+    "async": "^2.6.3",
+    "benchmark": "^2.1.3",
+    "chalk": "^1.1.3",
+    "cheerio": "^0.22.0",
+    "codecov.io": "~0.1.6",
+    "coveralls": "^2.11.15",
+    "curl-amd": "~0.8.12",
+    "docdown": "~0.7.2",
+    "dojo": "^1.15.0",
+    "ecstatic": "^2.2.2",
+    "fs-extra": "~1.0.0",
+    "glob": "^7.1.4",
+    "istanbul": "0.4.5",
+    "jquery": "^3.4.1",
+    "jscs": "^3.0.7",
+    "lodash": "4.17.20",
+    "lodash-doc-globals": "^0.1.1",
+    "markdown-doctest": "^0.9.1",
+    "optional-dev-dependency": "^2.0.0",
+    "platform": "^1.3.3",
+    "qunit-extras": "^3.0.0",
+    "qunitjs": "^2.1.0",
+    "request": "^2.88.0",
+    "requirejs": "^2.3.6",
+    "sauce-tunnel": "^2.5.0",
+    "uglify-js": "2.7.5",
+    "webpack": "^1.14.0"
+  },
+  "greenkeeper": {
+    "ignore": [
+      "lodash"
+    ]
   }
 }

perf/asset/perf-ui.js

@@ -15,27 +15,8 @@
 
   /*--------------------------------------------------------------------------*/
 
-  /**
-   * Registers an event listener on an element.
-   *
-   * @private
-   * @param {Element} element The element.
-   * @param {string} eventName The name of the event.
-   * @param {Function} handler The event handler.
-   * @returns {Element} The element.
-   */
-  function addListener(element, eventName, handler) {
-    if (typeof element.addEventListener != 'undefined') {
-      element.addEventListener(eventName, handler, false);
-    } else if (typeof element.attachEvent != 'undefined') {
-      element.attachEvent('on' + eventName, handler);
-    }
-  }
-
-  /*--------------------------------------------------------------------------*/
-
   // Initialize controls.
-  addListener(window, 'load', function() {
+  addEventListener('load', function() {
     function eventHandler(event) {
       var buildIndex = buildList.selectedIndex,
           otherIndex = otherList.selectedIndex,
@@ -58,7 +39,7 @@
     span1.innerHTML =
       '<label for="perf-build">Build: </label>' +
       '<select id="perf-build">' +
-      '<option value="lodash">lodash</option>' +
+      '<option value="lodash">lodash (production)</option>' +
       '</select>';
 
     var span2 = document.createElement('span');
@@ -96,8 +77,8 @@
       return -1;
     }());
 
-    addListener(buildList, 'change', eventHandler);
-    addListener(otherList, 'change', eventHandler);
+    buildList.addEventListener('change', eventHandler);
+    otherList.addEventListener('change', eventHandler);
   });
 
   // The lodash build file path.

perf/index.html

@@ -10,23 +10,34 @@
         height: 100%;
       }
       #FirebugUI {
-        top: 2em;
+        top: 2.5em;
       }
       #perf-toolbar {
         background-color: #EEE;
         color: #5E740B;
         font-family: "Helvetica Neue Light", "HelveticaNeue-Light", "Helvetica Neue", Calibri, Helvetica, Arial, sans-serif;
         font-size: small;
-        padding: 0.5em 0 0.5em 2em;
+        padding: 0.5em 1em 0.5em 1em;
         overflow: hidden;
       }
+      #perf-toolbar label {
+        display: inline-block;
+        margin-right: 0.5em;
+      }
+      #perf-toolbar span {
+        display: inline-block;
+        float: right;
+        line-height: 2.1em;
+        margin-left: 1em;
+        margin-top: 0;
+      }
     </style>
   </head>
   <body>
     <div id="perf-toolbar"></div>
-    <script src="../node_modules/platform/platform.js"></script>
     <script src="../lodash.js"></script>
-    <script src="../vendor/benchmark.js/benchmark.js"></script>
+    <script src="../node_modules/platform/platform.js"></script>
+    <script src="../node_modules/benchmark/benchmark.js"></script>
     <script src="../vendor/firebug-lite/src/firebug-lite-debug.js"></script>
     <script src="./asset/perf-ui.js"></script>
     <script>

perf/perf.js

@@ -1,4 +1,5 @@
 ;(function() {
+  'use strict';
 
   /** Used to access the Firebug Lite panel (set by `run`). */
   var fbPanel;
@@ -43,11 +44,11 @@
     if (!amd) {
       try {
         result = require('fs').realpathSync(result);
-      } catch(e) {}
+      } catch (e) {}
 
       try {
         result = require.resolve(result);
-      } catch(e) {}
+      } catch (e) {}
     }
     return result;
   }());
@@ -82,12 +83,6 @@
   /** Used to queue benchmark suites. */
   var suites = [];
 
-  /** Used to resolve a value's internal [[Class]]. */
-  var toString = Object.prototype.toString;
-
-  /** Detect if in a browser environment. */
-  var isBrowser = isHostType(root, 'document') && isHostType(root, 'navigator');
-
   /** Use a single "load" function. */
   var load = (typeof require == 'function' && !amd)
     ? require
@@ -109,7 +104,7 @@
 
   /** Load Benchmark.js. */
   var Benchmark = root.Benchmark || (root.Benchmark = (
-    Benchmark = load('../vendor/benchmark.js/benchmark.js') || root.Benchmark,
+    Benchmark = load('../node_modules/benchmark/benchmark.js') || root.Benchmark,
     Benchmark = Benchmark.Benchmark || Benchmark,
     Benchmark.runInContext(lodash.extend({}, root, { '_': lodash }))
   ));
@@ -565,11 +560,11 @@
   suites.push(
     Benchmark.Suite('`_.assign`')
       .add(buildName, {
-        'fn': 'lodashAssign({}, object)',
+        'fn': 'lodashAssign({}, { "a": 1, "b": 2, "c": 3 })',
         'teardown': 'function assign(){}'
       })
       .add(otherName, {
-        'fn': '_assign({}, object)',
+        'fn': '_assign({}, { "a": 1, "b": 2, "c": 3 })',
         'teardown': 'function assign(){}'
       })
   );
@@ -577,11 +572,11 @@
   suites.push(
     Benchmark.Suite('`_.assign` with multiple sources')
       .add(buildName, {
-        'fn': 'lodashAssign({}, object, object)',
+        'fn': 'lodashAssign({}, { "a": 1, "b": 2 }, { "c": 3, "d": 4 })',
         'teardown': 'function assign(){}'
       })
       .add(otherName, {
-        'fn': '_assign({}, object, object)',
+        'fn': '_assign({}, { "a": 1, "b": 2 }, { "c": 3, "d": 4 })',
         'teardown': 'function assign(){}'
       })
   );

test/asset/test-ui.js

@@ -15,27 +15,8 @@
 
   /*--------------------------------------------------------------------------*/
 
-  /**
-   * Registers an event listener on an element.
-   *
-   * @private
-   * @param {Element} element The element.
-   * @param {string} eventName The name of the event.
-   * @param {Function} handler The event handler.
-   * @returns {Element} The element.
-   */
-  function addListener(element, eventName, handler) {
-    if (typeof element.addEventListener != 'undefined') {
-      element.addEventListener(eventName, handler, false);
-    } else if (typeof element.attachEvent != 'undefined') {
-      element.attachEvent('on' + eventName, handler);
-    }
-  }
-
-  /*--------------------------------------------------------------------------*/
-
   // Initialize controls.
-  addListener(window, 'load', function() {
+  addEventListener('load', function() {
     function eventHandler(event) {
       var buildIndex = buildList.selectedIndex,
           loaderIndex = loaderList.selectedIndex,
@@ -59,8 +40,8 @@
         setTimeout(init, 15);
         return;
       }
-      toolbar.appendChild(span1);
-      toolbar.appendChild(span2);
+      toolbar.insertBefore(span2, toolbar.lastChild);
+      toolbar.insertBefore(span1, span2);
 
       buildList.selectedIndex = (function() {
         switch (build) {
@@ -84,12 +65,11 @@
         return -1;
       }());
 
-      addListener(buildList, 'change', eventHandler);
-      addListener(loaderList, 'change', eventHandler);
+      buildList.addEventListener('change', eventHandler);
+      loaderList.addEventListener('change', eventHandler);
     }
 
     var span1 = document.createElement('span');
-    span1.style.cssText = 'float:right';
     span1.innerHTML =
       '<label for="qunit-build">Build: </label>' +
       '<select id="qunit-build">' +
@@ -100,7 +80,6 @@
       '</select>';
 
     var span2 = document.createElement('span');
-    span2.style.cssText = 'float:right';
     span2.innerHTML =
       '<label for="qunit-loader">Loader: </label>' +
       '<select id="qunit-loader">' +
@@ -110,6 +89,12 @@
       '<option value="requirejs">RequireJS</option>' +
       '</select>';
 
+    span1.style.cssText =
+    span2.style.cssText = 'display:inline-block;float:right;line-height:2.1em;margin-left:1em;margin-top:0;';
+
+    span1.firstChild.style.cssText =
+    span2.firstChild.style.cssText = 'display:inline-block;margin-right:.5em;';
+
     var buildList = span1.lastChild,
         loaderList = span2.lastChild;
 
@@ -154,13 +139,13 @@
   ui.isForeign = RegExp('^(\\w+:)?//').test(build);
 
   // Used to indicate testing a modularized build.
-  ui.isModularize = /\b(?:amd|commonjs|es6?|node|npm|(index|main)\.js)\b/.test([location.pathname, location.search]);
+  ui.isModularize = /\b(?:amd|commonjs|es|node|npm|(index|main)\.js)\b/.test([location.pathname, location.search]);
 
   // Used to indicate testing in Sauce Labs' automated test cloud.
   ui.isSauceLabs = location.port == '9001';
 
   // Used to indicate that lodash is in strict mode.
-  ui.isStrict = /\bes6?\b/.test([location.pathname, location.search]);
+  ui.isStrict = /\bes\b/.test([location.pathname, location.search]);
 
   ui.urlParams = { 'build': build, 'loader': loader };
   ui.timing = { 'loadEventEnd': 0 };

test/asset/worker.js

@@ -1,12 +1,17 @@
+'use strict';
+
 self.console || (self.console = { 'log': function() {} });
 
 addEventListener('message', function(e) {
   if (e.data) {
     try {
       importScripts('../' + e.data);
-    } catch(e) {
-      self._ = { 'VERSION': e.message };
+    } catch (e) {
+      var lineNumber = e.lineNumber,
+          message = (lineNumber == null ? '' : (lineNumber + ': ')) + e.message;
+
+      self._ = { 'VERSION': message };
     }
     postMessage(_.VERSION);
   }
-}, false);
+});

test/backbone.html

@@ -40,35 +40,38 @@
         var lodash = _.noConflict();
 
         return function(_) {
-          lodash.defaultsDeep(_, { 'templateSettings': lodash.templateSettings });
-          lodash.mixin(_, lodash.pick(lodash, lodash.difference([
-            'countBy',
-            'debounce',
-            'difference',
-            'find',
-            'findIndex',
-            'findLastIndex',
-            'groupBy',
-            'includes',
-            'invert',
-            'keyBy',
-            'omit',
-            'partition',
-            'reduceRight',
-            'reject',
-            'sample',
-            'without'
-          ], lodash.functions(_))));
+          lodash(_)
+            .defaultsDeep({ 'templateSettings': lodash.templateSettings })
+            .mixin(lodash.pick(lodash, lodash.difference([
+              'countBy',
+              'debounce',
+              'difference',
+              'find',
+              'findIndex',
+              'findLastIndex',
+              'groupBy',
+              'includes',
+              'invert',
+              'invokeMap',
+              'keyBy',
+              'omit',
+              'partition',
+              'reduceRight',
+              'reject',
+              'sample',
+              'without'
+            ], lodash.functions(_))))
+            .value();
 
           lodash.forOwn(keyMap, function(realName, otherName) {
             _[otherName] = lodash[realName];
             _.prototype[otherName] = lodash.prototype[realName];
           });
-
           lodash.forOwn(aliasToReal, function(realName, alias) {
             _[alias] = _[realName];
             _.prototype[alias] = _.prototype[realName];
           });
+          return _;
         };
       }());
 
@@ -146,7 +149,7 @@
         QUnit.config.autostart = false;
 
         require(getConfig(), ['underscore'], function(lodash) {
-          mixinPrereqs(lodash);
+          _ = mixinPrereqs(lodash);
           require(getConfig(), ['backbone'], function() {
             require(getConfig(), [
               'test/setup/dom-setup',
@@ -158,9 +161,7 @@
               'test/router',
               'test/view',
               'test/sync'
-            ], function() {
-              QUnit.start();
-            });
+            ], QUnit.start);
           });
         });
       }());

test/index.html

@@ -22,7 +22,7 @@
         };
       }
     </script>
-    <script src="../node_modules/lodash/index.js"></script>
+    <script src="../node_modules/lodash/lodash.js"></script>
     <script>var lodashStable = _.noConflict();</script>
     <script src="../node_modules/qunitjs/qunit/qunit.js"></script>
     <script src="../node_modules/qunit-extras/qunit-extras.js"></script>
@@ -82,6 +82,12 @@
         funcProto._method = noop;
 
         // Set bad shims.
+        setProperty(Object, '_create', Object.create);
+        setProperty(Object, 'create', undefined);
+
+        setProperty(Object, '_getOwnPropertySymbols', Object.getOwnPropertySymbols);
+        setProperty(Object, 'getOwnPropertySymbols', undefined);
+
         setProperty(objectProto, '_propertyIsEnumerable', propertyIsEnumerable);
         setProperty(objectProto, 'propertyIsEnumerable', function(key) {
           return !(key == 'valueOf' && this && this.valueOf === 1) && _propertyIsEnumerable.call(this, key);
@@ -103,11 +109,8 @@
 
           setProperty(Map, 'toString', createToString('Map'));
         }
-        setProperty(Object, '_create', Object.create);
-        setProperty(Object, 'create', noop);
-
-        setProperty(Object, '_getOwnPropertySymbols', Object.getOwnPropertySymbols);
-        setProperty(Object, 'getOwnPropertySymbols', undefined);
+        setProperty(window, '_Promise', window.Promise);
+        setProperty(window, 'Promise', noop);
 
         setProperty(window, '_Set', window.Set);
         setProperty(window, 'Set', noop);
@@ -131,6 +134,8 @@
         var funcProto = Function.prototype,
             objectProto = Object.prototype;
 
+        setProperty(objectProto, 'propertyIsEnumerable', objectProto._propertyIsEnumerable);
+
         if (Object._create) {
           Object.create = Object._create;
         } else {
@@ -146,6 +151,11 @@
         } else {
           setProperty(window, 'Map', undefined);
         }
+        if (_Promise) {
+          Promise = _Promise;
+        } else {
+          setProperty(window, 'Promise', undefined);
+        }
         if (_Set) {
           Set = _Set;
         } else {
@@ -159,9 +169,8 @@
         } else {
           setProperty(window, 'WeakMap', undefined);
         }
-        setProperty(objectProto, 'propertyIsEnumerable', objectProto._propertyIsEnumerable);
-
         setProperty(window, '_Map', undefined);
+        setProperty(window, '_Promise', undefined);
         setProperty(window, '_Set', undefined);
         setProperty(window, '_Symbol', undefined);
         setProperty(window, '_WeakMap', undefined);
@@ -173,9 +182,9 @@
         setProperty(window, 'module', document.getElementById('module'));
 
         delete funcProto._method;
-        delete objectProto._propertyIsEnumerable;
         delete Object._create;
         delete Object._getOwnPropertySymbols;
+        delete objectProto._propertyIsEnumerable;
       }
 
       // Load lodash to expose it to the bad extensions/shims.
@@ -286,9 +295,9 @@
 
             if (ui.isModularize) {
               require(getConfig(), [
-                'lodash/internal/baseEach',
-                'lodash/internal/isIndex',
-                'lodash/internal/isIterateeCall'
+                'lodash/_baseEach',
+                'lodash/_isIndex',
+                'lodash/_isIterateeCall'
               ], function(baseEach, isIndex, isIterateeCall) {
                 lodash._baseEach = baseEach;
                 lodash._isIndex = isIndex;

test/remove.js

@@ -1,15 +1,15 @@
 #!/usr/bin/env node
 'use strict';
 
-var fs = require('fs'),
+var _ = require('../lodash'),
+    fs = require('fs'),
     path = require('path');
 
 var args = (args = process.argv)
   .slice((args[0] === process.execPath || args[0] === 'node') ? 2 : 0);
 
 var filePath = path.resolve(args[1]),
-    reLine = /.*/gm,
-    slice = Array.prototype.slice;
+    reLine = /.*/gm;
 
 var pattern = (function() {
   var result = args[0],
@@ -22,6 +22,6 @@ var pattern = (function() {
 /*----------------------------------------------------------------------------*/
 
 fs.writeFileSync(filePath, fs.readFileSync(filePath, 'utf8').replace(pattern, function(match) {
-  var snippet = slice.call(arguments, -3, -1)[0];
+  var snippet = _.slice(arguments, -3, -2)[0];
   return match.replace(snippet, snippet.replace(reLine, ''));
 }));

test/saucelabs.js

@@ -4,11 +4,6 @@
 /** Environment shortcut. */
 var env = process.env;
 
-if (env.TRAVIS_SECURE_ENV_VARS == 'false') {
-  console.log('Skipping Sauce Labs jobs; secure environment variables are unavailable');
-  process.exit(0);
-}
-
 /** Load Node.js modules. */
 var EventEmitter = require('events').EventEmitter,
     http = require('http'),
@@ -97,23 +92,23 @@ var browserNameMap = {
   'googlechrome': 'Chrome',
   'iehta': 'Internet Explorer',
   'ipad': 'iPad',
-  'iphone': 'iPhone'
+  'iphone': 'iPhone',
+  'microsoftedge': 'Edge'
 };
 
 /** List of platforms to load the runner on. */
 var platforms = [
   ['Linux', 'android', '5.1'],
-  ['Windows 10', 'chrome', '47'],
-  ['Windows 10', 'chrome', '46'],
-  ['Windows 10', 'firefox', '43'],
-  ['Windows 10', 'firefox', '42'],
-  ['Windows 10', 'microsoftedge', '20.10240'],
+  ['Windows 10', 'chrome', '54'],
+  ['Windows 10', 'chrome', '53'],
+  ['Windows 10', 'firefox', '50'],
+  ['Windows 10', 'firefox', '49'],
+  ['Windows 10', 'microsoftedge', '14'],
   ['Windows 10', 'internet explorer', '11'],
   ['Windows 8', 'internet explorer', '10'],
   ['Windows 7', 'internet explorer', '9'],
-  // ['OS X 10.10', 'ipad', '9.1'],
-  ['OS X 10.11', 'safari', '9'],
-  ['OS X 10.10', 'safari', '8']
+  ['macOS 10.12', 'safari', '10'],
+  ['OS X 10.11', 'safari', '9']
 ];
 
 /** Used to tailor the `platforms` array. */
@@ -213,18 +208,7 @@ if (tunneled) {
  * @returns {string} Returns the formal browser name.
  */
 function browserName(identifier) {
-  return browserNameMap[identifier] || capitalizeWords(identifier);
-}
-
-/**
- * Capitalizes the first character of each word in `string`.
- *
- * @private
- * @param {string} string The string to augment.
- * @returns {string} Returns the augmented string.
- */
-function capitalizeWords(string) {
-  return _.map(string.split(' '), _.capitalize).join(' ');
+  return browserNameMap[identifier] || _.startCase(identifier);
 }
 
 /**
@@ -304,7 +288,7 @@ function optionToArray(name, string) {
 function optionToValue(name, string) {
   var result = string.match(RegExp('^' + name + '(?:=([\\s\\S]+))?$'));
   if (result) {
-    result = _.result(result, 1);
+    result = _.get(result, 1);
     result = result ? _.trim(result) : true;
   }
   if (result === 'false') {
@@ -376,8 +360,8 @@ function onJobStart(error, res, body) {
   if (this.stopping) {
     return;
   }
-  var statusCode = _.result(res, 'statusCode'),
-      taskId = _.first(_.result(body, 'js tests'));
+  var statusCode = _.get(res, 'statusCode'),
+      taskId = _.first(_.get(body, 'js tests'));
 
   if (error || !taskId || statusCode != 200) {
     if (this.attempts < this.retries) {
@@ -418,19 +402,19 @@ function onJobStatus(error, res, body) {
   if (!this.running || this.stopping) {
     return;
   }
-  var completed = _.result(body, 'completed', false),
-      data = _.first(_.result(body, 'js tests')),
+  var completed = _.get(body, 'completed', false),
+      data = _.first(_.get(body, 'js tests')),
       elapsed = (_.now() - this.timestamp) / 1000,
-      jobId = _.result(data, 'job_id', null),
-      jobResult = _.result(data, 'result', null),
-      jobStatus = _.result(data, 'status', ''),
-      jobUrl = _.result(data, 'url', null),
+      jobId = _.get(data, 'job_id', null),
+      jobResult = _.get(data, 'result', null),
+      jobStatus = _.get(data, 'status', ''),
+      jobUrl = _.get(data, 'url', null),
       expired = (elapsed >= queueTimeout && !_.includes(jobStatus, 'in progress')),
       options = this.options,
       platform = options.platforms[0];
 
   if (_.isObject(jobResult)) {
-    var message = _.result(jobResult, 'message');
+    var message = _.get(jobResult, 'message');
   } else {
     if (typeof jobResult == 'string') {
       message = jobResult;
@@ -450,9 +434,9 @@ function onJobStatus(error, res, body) {
     this._pollerId = _.delay(_.bind(this.status, this), this.statusInterval * 1000);
     return;
   }
-  var description = browserName(platform[1]) + ' ' + platform[2] + ' on ' + capitalizeWords(platform[0]),
+  var description = browserName(platform[1]) + ' ' + platform[2] + ' on ' + _.startCase(platform[0]),
       errored = !jobResult || !jobResult.passed || reError.test(message) || reError.test(jobStatus),
-      failures = _.result(jobResult, 'failed'),
+      failures = _.get(jobResult, 'failed'),
       label = options.name + ':',
       tunnel = this.tunnel;
 
@@ -473,7 +457,7 @@ function onJobStatus(error, res, body) {
       return;
     }
     else {
-      if (typeof message == 'undefined') {
+      if (message === undefined) {
         message = 'Results are unavailable. ' + details;
       }
       console.error(label, description, chalk.red('failed') + ';', message);
@@ -601,7 +585,7 @@ Job.prototype.restart = function(callback) {
 
   var options = this.options,
       platform = options.platforms[0],
-      description = browserName(platform[1]) + ' ' + platform[2] + ' on ' + capitalizeWords(platform[0]),
+      description = browserName(platform[1]) + ' ' + platform[2] + ' on ' + _.startCase(platform[0]),
       label = options.name + ':';
 
   logInline();
@@ -826,13 +810,16 @@ Tunnel.prototype.start = function(callback) {
  * @param {Object} Returns the tunnel instance.
  */
 Tunnel.prototype.dequeue = function() {
-  var jobs = this.jobs,
+  var count = 0,
+      jobs = this.jobs,
       active = jobs.active,
       queue = jobs.queue,
       throttled = this.throttled;
 
   while (queue.length && (active.length < throttled)) {
-    active.push(queue.shift().start());
+    var job = queue.shift();
+    active.push(job);
+    _.delay(_.bind(job.start, job), ++count * 1000);
   }
   return this;
 };

test/underscore.html

@@ -29,6 +29,12 @@
       QUnit.config.hidepassed = true;
       QUnit.config.excused = {
         'Arrays': {
+          'chunk': [
+            'defaults to empty array (chunk size 0)'
+          ],
+          'difference': [
+            'can perform an OO-style difference'
+          ],
           'drop': [
             'is an alias for rest'
           ],
@@ -50,9 +56,6 @@
             'works on an arguments object',
             'can handle very deep arrays'
           ],
-          'head': [
-            'is an alias for first'
-          ],
           'indexOf': [
             "sorted indexOf doesn't uses binary search",
             '0'
@@ -80,9 +83,6 @@
             'an array of pairs zipped together into an object',
             'an object converted to pairs and back to an object'
           ],
-          'range': [
-            'range with two arguments a & b, b<a generates an empty array'
-          ],
           'rest': [
             'returns the whole array when index is 0',
             'returns elements starting at the given index',
@@ -99,11 +99,15 @@
             'is an alias for first'
           ],
           'uniq': [
-            'can find the unique values of an array using a custom iterator',
-            'can find the unique values of an array using a custom iterator without specifying whether array is sorted',
-            'string iterator works with sorted array',
-            'can use pluck like iterator',
+            'uses the result of `iterator` for uniqueness comparisons (unsorted case)',
+            '`sorted` argument defaults to false when omitted',
+            'when `iterator` is a string, uses that key for comparisons (unsorted case)',
+            'uses the result of `iterator` for uniqueness comparisons (sorted case)',
+            'when `iterator` is a string, uses that key for comparisons (sorted case)',
             'can use falsey pluck like iterator'
+          ],
+          'union': [
+            'can perform an OO-style union'
           ]
         },
         'Chaining': {
@@ -119,7 +123,8 @@
           'Iterating objects with sketchy length properties': true,
           'Resistant to collection length and properties changing while iterating': true,
           'countBy': [
-            'true'
+            '{}',
+            '[{}]'
           ],
           'each': [
             'context object property accessed'
@@ -131,24 +136,17 @@
           ],
           'filter': [
             'given context',
-            '[{"a":1,"b":2},{"a":1,"b":3},{"a":1,"b":4}]',
-            '[{"a":1,"b":2},{"a":2,"b":2}]',
-            'Empty object accepts all items',
             'OO-filter'
           ],
           'find': [
-            '{"a":1,"b":4}',
-            'undefined when not found',
-            'undefined when searching empty list',
-            'works on objects',
-            'undefined',
             'called with context'
           ],
           'findWhere': [
             'checks properties given function'
           ],
           'groupBy': [
-            'true'
+            '{}',
+            '[{}]'
           ],
           'includes': [
             "doesn't delegate to binary search"
@@ -188,8 +186,7 @@
           'partition': [
             'can reference the array index',
             'Died on test #8',
-            'partition takes a context argument',
-            'function(a){[code]}'
+            'partition takes a context argument'
           ],
           'pluck': [
             '[1]'
@@ -213,39 +210,36 @@
             'checks properties given function'
           ],
           'Can use various collection methods on NodeLists': [
-            '<span id="id2"></span>',
-            '<span id="id1"></span>'
+            '<span id="id2"></span>'
           ]
         },
         'Functions': {
           'debounce asap': true,
           'debounce asap cancel': true,
-          'debounce after system time is set backwards': true,
           'debounce asap recursively': true,
+          'debounce after system time is set backwards': true,
+          'debounce re-entrant': true,
           'throttle repeatedly with results': true,
           'more throttle does not trigger leading call when leading is set to false': true,
           'throttle does not trigger trailing call when trailing is set to false': true,
-          'before': [
-            'stores a memo to the last value',
-            'provides context'
-          ],
+          'before': true,
           'bind': [
             'Died on test #2'
           ],
           'bindAll': [
             'throws an error for bindAll with no functions named'
           ],
+          'debounce': [
+            'incr was debounced'
+          ],
+          'iteratee': [
+            '"bbiz"',
+            '"foo"',
+            '1'
+          ],
           'memoize': [
             '{"bar":"BAR","foo":"FOO"}',
             'Died on test #8'
-          ],
-          'partial':[
-            'can partially apply with placeholders',
-            'accepts more arguments than the number of placeholders',
-            'accepts fewer arguments than the number of placeholders',
-            'unfilled placeholders are undefined',
-            'keeps prototype',
-            'allows the placeholder to be swapped out'
           ]
         },
         'Objects': {
@@ -255,10 +249,6 @@
             'is not fooled by sparse arrays with additional properties',
             '[]'
           ],
-          'defaults': [
-            'defaults skips nulls',
-            'defaults skips undefined'
-          ],
           'extend': [
             'extending null results in null',
             'extending undefined results in undefined'
@@ -275,14 +265,15 @@
             'Commutative equality is implemented for `0` and `-0`',
             '`new Number(0)` and `-0` are not equal',
             'Commutative equality is implemented for `new Number(0)` and `-0`',
+            'Invalid dates are not equal',
             'false'
           ],
           'isFinite': [
             'Numeric strings are numbers',
             'Number instances can be finite'
           ],
-          'isMatch': [
-            'doesnt falsey match constructor on undefined/null'
+          'isSet': [
+            'Died on test #9'
           ],
           'findKey': [
             'called with context'
@@ -296,10 +287,6 @@
             'called with context',
             'mapValue identity'
           ],
-          'matcher': [
-            'null matches null',
-            'treats primitives as empty'
-          ],
           'omit': [
             'can accept a predicate',
             'function is given context'
@@ -310,7 +297,12 @@
           ]
         },
         'Utility': {
-          'noConflict (node vm)': true,
+          '_.escape & unescape': [
+            '` is escaped',
+            '` can be unescaped',
+            'can escape multiple occurances of `',
+            'multiple occurrences of ` can be unescaped'
+          ],
           'now': [
             'Produces the correct time in milliseconds'
           ],
@@ -357,25 +349,25 @@
         var lodash = _.noConflict();
 
         return function(_) {
-          lodash.defaultsDeep(_, { 'templateSettings': lodash.templateSettings });
-          lodash.mixin(_, lodash.pick(lodash, lodash.difference(lodash.functions(lodash), lodash.functions(_))));
+          lodash(_)
+            .defaultsDeep({ 'templateSettings': lodash.templateSettings })
+            .mixin(lodash.pick(lodash, lodash.difference(lodash.functions(lodash), lodash.functions(_))))
+            .value();
 
           lodash.forOwn(keyMap, function(realName, otherName) {
             _[otherName] = lodash[realName];
             _.prototype[otherName] = lodash.prototype[realName];
           });
-
           lodash.forOwn(aliasToReal, function(realName, alias) {
             _[alias] = _[realName];
             _.prototype[alias] = _.prototype[realName];
           });
+          return _;
         };
       }());
 
       // Only excuse in Sauce Labs.
       if (!ui.isSauceLabs) {
-        delete QUnit.config.excused.Functions['throttle repeatedly with results'];
-        delete QUnit.config.excused.Functions['more throttle does not trigger leading call when leading is set to false'];
         delete QUnit.config.excused.Functions['throttle does not trigger trailing call when trailing is set to false'];
         delete QUnit.config.excused.Utility.now;
       }
@@ -452,9 +444,12 @@
         }
 
         QUnit.config.autostart = false;
+        QUnit.config.excused.Functions.iteratee = true;
+        QUnit.config.excused.Utility.noConflict = true;
+        QUnit.config.excused.Utility['noConflict (node vm)'] = true;
 
         require(getConfig(), [moduleId], function(lodash) {
-          mixinPrereqs(lodash);
+          _ = mixinPrereqs(lodash);
           require(getConfig(), [
             'test/collections',
             'test/arrays',
@@ -463,9 +458,7 @@
             'test/cross-document',
             'test/utility',
             'test/chaining'
-          ], function() {
-            QUnit.start();
-          });
+          ], QUnit.start);
         });
       }());
     </script>

vendor/backbone/LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2010-2015 Jeremy Ashkenas, DocumentCloud
+Copyright (c) 2010-2016 Jeremy Ashkenas, DocumentCloud
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation

vendor/backbone/backbone.js

@@ -1,6 +1,6 @@
-//     Backbone.js 1.2.3
+//     Backbone.js 1.3.3
 
-//     (c) 2010-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+//     (c) 2010-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 //     Backbone may be freely distributed under the MIT license.
 //     For all details and documentation:
 //     http://backbonejs.org
@@ -9,8 +9,8 @@
 
   // Establish the root object, `window` (`self`) in the browser, or `global` on the server.
   // We use `self` instead of `window` for `WebWorker` support.
-  var root = (typeof self == 'object' && self.self == self && self) ||
-            (typeof global == 'object' && global.global == global && global);
+  var root = (typeof self == 'object' && self.self === self && self) ||
+            (typeof global == 'object' && global.global === global && global);
 
   // Set up Backbone appropriately for the environment. Start with AMD.
   if (typeof define === 'function' && define.amd) {
@@ -44,7 +44,7 @@
   var slice = Array.prototype.slice;
 
   // Current version of the library. Keep in sync with `package.json`.
-  Backbone.VERSION = '1.2.3';
+  Backbone.VERSION = '1.3.3';
 
   // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns
   // the `$` variable.
@@ -146,7 +146,7 @@
         events = eventsApi(iteratee, events, names[i], name[names[i]], opts);
       }
     } else if (name && eventSplitter.test(name)) {
-      // Handle space separated event names by delegating them individually.
+      // Handle space-separated event names by delegating them individually.
       for (names = name.split(eventSplitter); i < names.length; i++) {
         events = iteratee(events, names[i], callback, opts);
       }
@@ -242,7 +242,6 @@
 
       listening.obj.off(name, callback, this);
     }
-    if (_.isEmpty(listeningTo)) this._listeningTo = void 0;
 
     return this;
   };
@@ -299,7 +298,7 @@
         delete events[name];
       }
     }
-    if (_.size(events)) return events;
+    return events;
   };
 
   // Bind an event to only be triggered a single time. After the first time
@@ -309,7 +308,8 @@
   Events.once = function(name, callback, context) {
     // Map the event into a `{event: once}` object.
     var events = eventsApi(onceMap, {}, name, callback, _.bind(this.off, this));
-    return this.on(events, void 0, context);
+    if (typeof name === 'string' && context == null) callback = void 0;
+    return this.on(events, callback, context);
   };
 
   // Inversion-of-control versions of `once`.
@@ -348,7 +348,7 @@
   };
 
   // Handles triggering the appropriate event callbacks.
-  var triggerApi = function(objEvents, name, cb, args) {
+  var triggerApi = function(objEvents, name, callback, args) {
     if (objEvents) {
       var events = objEvents[name];
       var allEvents = objEvents.all;
@@ -394,11 +394,13 @@
   var Model = Backbone.Model = function(attributes, options) {
     var attrs = attributes || {};
     options || (options = {});
+    this.preinitialize.apply(this, arguments);
     this.cid = _.uniqueId(this.cidPrefix);
     this.attributes = {};
     if (options.collection) this.collection = options.collection;
     if (options.parse) attrs = this.parse(attrs, options) || {};
-    attrs = _.defaults({}, attrs, _.result(this, 'defaults'));
+    var defaults = _.result(this, 'defaults');
+    attrs = _.defaults(_.extend({}, defaults, attrs), defaults);
     this.set(attrs, options);
     this.changed = {};
     this.initialize.apply(this, arguments);
@@ -421,6 +423,10 @@
     // You may want to override this if you're experiencing name clashes with model ids.
     cidPrefix: 'c',
 
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the Model.
+    preinitialize: function(){},
+
     // Initialize is an empty function by default. Override it with your own
     // initialization logic.
     initialize: function(){},
@@ -561,12 +567,14 @@
       if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
       var old = this._changing ? this._previousAttributes : this.attributes;
       var changed = {};
+      var hasChanged;
       for (var attr in diff) {
         var val = diff[attr];
         if (_.isEqual(old[attr], val)) continue;
         changed[attr] = val;
+        hasChanged = true;
       }
-      return _.size(changed) ? changed : false;
+      return hasChanged ? changed : false;
     },
 
     // Get the previous value of an attribute, recorded at the time the last
@@ -714,7 +722,7 @@
 
     // Check if the model is currently in a valid state.
     isValid: function(options) {
-      return this._validate({}, _.defaults({validate: true}, options));
+      return this._validate({}, _.extend({}, options, {validate: true}));
     },
 
     // Run validation against the next complete set of model attributes,
@@ -753,6 +761,7 @@
   // its models in sort order, as they're added and removed.
   var Collection = Backbone.Collection = function(models, options) {
     options || (options = {});
+    this.preinitialize.apply(this, arguments);
     if (options.model) this.model = options.model;
     if (options.comparator !== void 0) this.comparator = options.comparator;
     this._reset();
@@ -769,7 +778,8 @@
     at = Math.min(Math.max(at, 0), array.length);
     var tail = Array(array.length - at);
     var length = insert.length;
-    for (var i = 0; i < tail.length; i++) tail[i] = array[i + at];
+    var i;
+    for (i = 0; i < tail.length; i++) tail[i] = array[i + at];
     for (i = 0; i < length; i++) array[i + at] = insert[i];
     for (i = 0; i < tail.length; i++) array[i + length + at] = tail[i];
   };
@@ -781,6 +791,11 @@
     // This should be overridden in most cases.
     model: Model,
 
+
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the Collection.
+    preinitialize: function(){},
+
     // Initialize is an empty function by default. Override it with your own
     // initialization logic.
     initialize: function(){},
@@ -809,7 +824,10 @@
       var singular = !_.isArray(models);
       models = singular ? [models] : models.slice();
       var removed = this._removeModels(models, options);
-      if (!options.silent && removed.length) this.trigger('update', this, options);
+      if (!options.silent && removed.length) {
+        options.changes = {added: [], merged: [], removed: removed};
+        this.trigger('update', this, options);
+      }
       return singular ? removed[0] : removed;
     },
 
@@ -820,18 +838,22 @@
     set: function(models, options) {
       if (models == null) return;
 
-      options = _.defaults({}, options, setOptions);
-      if (options.parse && !this._isModel(models)) models = this.parse(models, options);
+      options = _.extend({}, setOptions, options);
+      if (options.parse && !this._isModel(models)) {
+        models = this.parse(models, options) || [];
+      }
 
       var singular = !_.isArray(models);
-      models = singular ? (models ? [models] : []) : models.slice();
+      models = singular ? [models] : models.slice();
 
       var at = options.at;
       if (at != null) at = +at;
+      if (at > this.length) at = this.length;
       if (at < 0) at += this.length + 1;
 
       var set = [];
       var toAdd = [];
+      var toMerge = [];
       var toRemove = [];
       var modelMap = {};
 
@@ -845,8 +867,8 @@
 
       // Turn bare objects into model references, and prevent invalid models
       // from being added.
-      var model;
-      for (var i = 0; i < models.length; i++) {
+      var model, i;
+      for (i = 0; i < models.length; i++) {
         model = models[i];
 
         // If a duplicate is found, prevent it from being added and
@@ -857,6 +879,7 @@
             var attrs = this._isModel(model) ? model.attributes : model;
             if (options.parse) attrs = existing.parse(attrs, options);
             existing.set(attrs, options);
+            toMerge.push(existing);
             if (sortable && !sort) sort = existing.hasChanged(sortAttr);
           }
           if (!modelMap[existing.cid]) {
@@ -890,8 +913,8 @@
       var orderChanged = false;
       var replace = !sortable && add && remove;
       if (set.length && replace) {
-        orderChanged = this.length != set.length || _.some(this.models, function(model, index) {
-          return model !== set[index];
+        orderChanged = this.length !== set.length || _.some(this.models, function(m, index) {
+          return m !== set[index];
         });
         this.models.length = 0;
         splice(this.models, set, 0);
@@ -905,7 +928,7 @@
       // Silently sort the collection if appropriate.
       if (sort) this.sort({silent: true});
 
-      // Unless silenced, it's time to fire all appropriate add/sort events.
+      // Unless silenced, it's time to fire all appropriate add/sort/update events.
       if (!options.silent) {
         for (i = 0; i < toAdd.length; i++) {
           if (at != null) options.index = at + i;
@@ -913,7 +936,14 @@
           model.trigger('add', model, this, options);
         }
         if (sort || orderChanged) this.trigger('sort', this, options);
-        if (toAdd.length || toRemove.length) this.trigger('update', this, options);
+        if (toAdd.length || toRemove.length || toMerge.length) {
+          options.changes = {
+            added: toAdd,
+            removed: toRemove,
+            merged: toMerge
+          };
+          this.trigger('update', this, options);
+        }
       }
 
       // Return the added (or merged) model (or models).
@@ -963,11 +993,18 @@
       return slice.apply(this.models, arguments);
     },
 
-    // Get a model from the set by id.
+    // Get a model from the set by id, cid, model object with id or cid
+    // properties, or an attributes object that is transformed through modelId.
     get: function(obj) {
       if (obj == null) return void 0;
-      var id = this.modelId(this._isModel(obj) ? obj.attributes : obj);
-      return this._byId[obj] || this._byId[id] || this._byId[obj.cid];
+      return this._byId[obj] ||
+        this._byId[this.modelId(obj.attributes || obj)] ||
+        obj.cid && this._byId[obj.cid];
+    },
+
+    // Returns `true` if the model is in the collection.
+    has: function(obj) {
+      return this.get(obj) != null;
     },
 
     // Get the model at the given index.
@@ -1042,9 +1079,9 @@
       if (!wait) this.add(model, options);
       var collection = this;
       var success = options.success;
-      options.success = function(model, resp, callbackOpts) {
-        if (wait) collection.add(model, callbackOpts);
-        if (success) success.call(callbackOpts.context, model, resp, callbackOpts);
+      options.success = function(m, resp, callbackOpts) {
+        if (wait) collection.add(m, callbackOpts);
+        if (success) success.call(callbackOpts.context, m, resp, callbackOpts);
       };
       model.save(null, options);
       return model;
@@ -1195,6 +1232,7 @@
   // if an existing element is not provided...
   var View = Backbone.View = function(options) {
     this.cid = _.uniqueId('view');
+    this.preinitialize.apply(this, arguments);
     _.extend(this, _.pick(options, viewOptions));
     this._ensureElement();
     this.initialize.apply(this, arguments);
@@ -1218,6 +1256,10 @@
       return this.$el.find(selector);
     },
 
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the View
+    preinitialize: function(){},
+
     // Initialize is an empty function by default. Override it with your own
     // initialization logic.
     initialize: function(){},
@@ -1443,6 +1485,7 @@
   // matched. Creating a new one sets its `routes` hash, if not set statically.
   var Router = Backbone.Router = function(options) {
     options || (options = {});
+    this.preinitialize.apply(this, arguments);
     if (options.routes) this.routes = options.routes;
     this._bindRoutes();
     this.initialize.apply(this, arguments);
@@ -1458,6 +1501,10 @@
   // Set up all inheritable **Backbone.Router** properties and methods.
   _.extend(Router.prototype, Events, {
 
+    // preinitialize is an empty function by default. You can override it with a function
+    // or object.  preinitialize will run before any instantiation logic is run in the Router.
+    preinitialize: function(){},
+
     // Initialize is an empty function by default. Override it with your own
     // initialization logic.
     initialize: function(){},
@@ -1584,8 +1631,8 @@
     // Does the pathname match the root?
     matchRoot: function() {
       var path = this.decodeFragment(this.location.pathname);
-      var root = path.slice(0, this.root.length - 1) + '/';
-      return root === this.root;
+      var rootPath = path.slice(0, this.root.length - 1) + '/';
+      return rootPath === this.root;
     },
 
     // Unicode characters in `location.pathname` are percent encoded so they're
@@ -1657,8 +1704,8 @@
         // If we've started off with a route from a `pushState`-enabled
         // browser, but we're currently in a browser that doesn't support it...
         if (!this._hasPushState && !this.atRoot()) {
-          var root = this.root.slice(0, -1) || '/';
-          this.location.replace(root + '#' + this.getPath());
+          var rootPath = this.root.slice(0, -1) || '/';
+          this.location.replace(rootPath + '#' + this.getPath());
           // Return immediately as browser will do redirect to new url
           return true;
 
@@ -1782,17 +1829,20 @@
       fragment = this.getFragment(fragment || '');
 
       // Don't include a trailing slash on the root.
-      var root = this.root;
+      var rootPath = this.root;
       if (fragment === '' || fragment.charAt(0) === '?') {
-        root = root.slice(0, -1) || '/';
+        rootPath = rootPath.slice(0, -1) || '/';
       }
-      var url = root + fragment;
+      var url = rootPath + fragment;
 
-      // Strip the hash and decode for matching.
-      fragment = this.decodeFragment(fragment.replace(pathStripper, ''));
+      // Strip the fragment of the query and hash for matching.
+      fragment = fragment.replace(pathStripper, '');
 
-      if (this.fragment === fragment) return;
-      this.fragment = fragment;
+      // Decode for matching.
+      var decodedFragment = this.decodeFragment(fragment);
+
+      if (this.fragment === decodedFragment) return;
+      this.fragment = decodedFragment;
 
       // If pushState is available, we use it to set the fragment as a real URL.
       if (this._usePushState) {
@@ -1893,5 +1943,4 @@
   };
 
   return Backbone;
-
 });

vendor/backbone/test/events.js

@@ -1,4 +1,4 @@
-(function() {
+(function(QUnit) {
 
   QUnit.module('Backbone.Events');
 
@@ -352,8 +352,8 @@
     _.extend(obj, Backbone.Events);
     obj.on('all', function(event) {
       obj.counter++;
-      if (event == 'a') a = true;
-      if (event == 'b') b = true;
+      if (event === 'a') a = true;
+      if (event === 'b') b = true;
     })
     .trigger('a b');
     assert.ok(a);
@@ -417,6 +417,18 @@
     assert.equal(obj.counterB, 1, 'counterB should have only been incremented once.');
   });
 
+  QUnit.test('bind a callback with a default context when none supplied', function(assert) {
+    assert.expect(1);
+    var obj = _.extend({
+      assertTrue: function() {
+        assert.equal(this, obj, '`this` was bound to the callback');
+      }
+    }, Backbone.Events);
+
+    obj.once('event', obj.assertTrue);
+    obj.trigger('event');
+  });
+
   QUnit.test('bind a callback with a supplied context', function(assert) {
     assert.expect(1);
     var TestClass = function() {
@@ -477,7 +489,7 @@
   QUnit.test('if callback is truthy but not a function, `on` should throw an error just like jQuery', function(assert) {
     assert.expect(1);
     var view = _.extend({}, Backbone.Events).on('test', 'noop');
-    assert.throws(function() {
+    assert.raises(function() {
       view.trigger('test');
     });
   });
@@ -587,6 +599,19 @@
     assert.equal(obj.counter, 3);
   });
 
+  QUnit.test('bind a callback with a supplied context using once with object notation', function(assert) {
+    assert.expect(1);
+    var obj = {counter: 0};
+    var context = {};
+    _.extend(obj, Backbone.Events);
+
+    obj.once({
+      a: function() {
+        assert.strictEqual(this, context, 'defaults `context` to `callback` param');
+      }
+    }, context).trigger('a');
+  });
+
   QUnit.test('once with off only by context', function(assert) {
     assert.expect(0);
     var context = {};
@@ -678,4 +703,4 @@
     two.trigger('y', 2);
   });
 
-})();
+})(QUnit);

vendor/backbone/test/model.js

@@ -1,4 +1,4 @@
-(function() {
+(function(QUnit) {
 
   var ProxyModel = Backbone.Model.extend();
   var Klass = Backbone.Collection.extend({
@@ -34,6 +34,12 @@
     assert.equal(model.collection, collection);
   });
 
+  QUnit.test('Object.prototype properties are overridden by attributes', function(assert) {
+    assert.expect(1);
+    var model = new Backbone.Model({hasOwnProperty: true});
+    assert.equal(model.get('hasOwnProperty'), true);
+  });
+
   QUnit.test('initialize with attributes and options', function(assert) {
     assert.expect(1);
     var Model = Backbone.Model.extend({
@@ -57,17 +63,34 @@
     assert.equal(model.get('value'), 2);
   });
 
-  QUnit.test('initialize with defaults', function(assert) {
+
+  QUnit.test('preinitialize', function(assert) {
     assert.expect(2);
     var Model = Backbone.Model.extend({
-      defaults: {
-        firstName: 'Unknown',
-        lastName: 'Unknown'
+
+      preinitialize: function() {
+        this.one = 1;
       }
     });
-    var model = new Model({'firstName': 'John'});
-    assert.equal(model.get('firstName'), 'John');
-    assert.equal(model.get('lastName'), 'Unknown');
+    var model = new Model({}, {collection: collection});
+    assert.equal(model.one, 1);
+    assert.equal(model.collection, collection);
+  });
+
+  QUnit.test('preinitialize occurs before the model is set up', function(assert) {
+    assert.expect(6);
+    var Model = Backbone.Model.extend({
+
+      preinitialize: function() {
+        assert.equal(this.collection, undefined);
+        assert.equal(this.cid, undefined);
+        assert.equal(this.id, undefined);
+      }
+    });
+    var model = new Model({id: 'foo'}, {collection: collection});
+    assert.equal(model.collection, collection);
+    assert.equal(model.id, 'foo');
+    assert.notEqual(model.cid, undefined);
   });
 
   QUnit.test('parse can return null', function(assert) {
@@ -89,7 +112,7 @@
     doc.collection.url = '/collection/';
     assert.equal(doc.url(), '/collection/1-the-tempest');
     doc.collection = null;
-    assert.throws(function() { doc.url(); });
+    assert.raises(function() { doc.url(); });
     doc.collection = collection;
   });
 
@@ -251,12 +274,12 @@
     var changeCount = 0;
     a.on('change:foo', function() { changeCount += 1; });
     a.set({foo: 2});
-    assert.ok(a.get('foo') == 2, 'Foo should have changed.');
-    assert.ok(changeCount == 1, 'Change count should have incremented.');
+    assert.equal(a.get('foo'), 2, 'Foo should have changed.');
+    assert.equal(changeCount, 1, 'Change count should have incremented.');
     // set with value that is not new shouldn't fire change event
     a.set({foo: 2});
-    assert.ok(a.get('foo') == 2, 'Foo should NOT have changed, still 2');
-    assert.ok(changeCount == 1, 'Change count should NOT have incremented.');
+    assert.equal(a.get('foo'), 2, 'Foo should NOT have changed, still 2');
+    assert.equal(changeCount, 1, 'Change count should NOT have incremented.');
 
     a.validate = function(attrs) {
       assert.equal(attrs.foo, void 0, 'validate:true passed while unsetting');
@@ -264,7 +287,7 @@
     a.unset('foo', {validate: true});
     assert.equal(a.get('foo'), void 0, 'Foo should have changed');
     delete a.validate;
-    assert.ok(changeCount == 2, 'Change count should have incremented for unset.');
+    assert.equal(changeCount, 2, 'Change count should have incremented for unset.');
 
     a.unset('id');
     assert.equal(a.id, undefined, 'Unsetting the id should remove the id property.');
@@ -273,8 +296,8 @@
   QUnit.test('#2030 - set with failed validate, followed by another set triggers change', function(assert) {
     var attr = 0, main = 0, error = 0;
     var Model = Backbone.Model.extend({
-      validate: function(attr) {
-        if (attr.x > 1) {
+      validate: function(attrs) {
+        if (attrs.x > 1) {
           error++;
           return 'this is an error';
         }
@@ -379,15 +402,15 @@
     var Collection = Backbone.Collection.extend({
       model: Model
     });
-    var collection = new Collection([{id: 'c5'}, {id: 'c6'}, {id: 'c7'}]);
+    var col = new Collection([{id: 'c5'}, {id: 'c6'}, {id: 'c7'}]);
 
-    assert.equal(collection.get('c6').cid.charAt(0), 'm');
-    collection.set([{id: 'c6', value: 'test'}], {
+    assert.equal(col.get('c6').cid.charAt(0), 'm');
+    col.set([{id: 'c6', value: 'test'}], {
       merge: true,
       add: true,
       remove: false
     });
-    assert.ok(collection.get('c6').has('value'));
+    assert.ok(col.get('c6').has('value'));
   });
 
   QUnit.test('set an empty string', function(assert) {
@@ -428,7 +451,7 @@
   });
 
   QUnit.test('defaults', function(assert) {
-    assert.expect(4);
+    assert.expect(9);
     var Defaulted = Backbone.Model.extend({
       defaults: {
         one: 1,
@@ -438,6 +461,9 @@
     var model = new Defaulted({two: undefined});
     assert.equal(model.get('one'), 1);
     assert.equal(model.get('two'), 2);
+    model = new Defaulted({two: 3});
+    assert.equal(model.get('one'), 1);
+    assert.equal(model.get('two'), 3);
     Defaulted = Backbone.Model.extend({
       defaults: function() {
         return {
@@ -449,6 +475,15 @@
     model = new Defaulted({two: undefined});
     assert.equal(model.get('one'), 3);
     assert.equal(model.get('two'), 4);
+    Defaulted = Backbone.Model.extend({
+      defaults: {hasOwnProperty: true}
+    });
+    model = new Defaulted();
+    assert.equal(model.get('hasOwnProperty'), true);
+    model = new Defaulted({hasOwnProperty: undefined});
+    assert.equal(model.get('hasOwnProperty'), true);
+    model = new Defaulted({hasOwnProperty: false});
+    assert.equal(model.get('hasOwnProperty'), false);
   });
 
   QUnit.test('change, hasChanged, changedAttributes, previous, previousAttributes', function(assert) {
@@ -480,8 +515,8 @@
     assert.expect(2);
     var value;
     var model = new Backbone.Model({name: 'Rob'});
-    model.on('change', function(model, options) {
-      value = options.prefix + model.get('name');
+    model.on('change', function(m, options) {
+      value = options.prefix + m.get('name');
     });
     model.set({name: 'Bob'}, {prefix: 'Mr. '});
     assert.equal(value, 'Mr. Bob');
@@ -517,10 +552,10 @@
     model.validate = function(attrs) {
       if (attrs.admin) return "Can't change admin status.";
     };
-    model.sync = function(method, model, options) {
+    model.sync = function(method, m, options) {
       options.success.call(this, {admin: true});
     };
-    model.on('invalid', function(model, error) {
+    model.on('invalid', function(m, error) {
       lastError = error;
     });
     model.save(null);
@@ -542,7 +577,7 @@
     model.on('error', function() {
       assert.ok(true);
     });
-    model.sync = function(method, model, options) {
+    model.sync = function(method, m, options) {
       options.error();
     };
     model.save({data: 2, id: 1});
@@ -560,8 +595,8 @@
         assert.equal(this, obj);
       }
     };
-    model.sync = function(method, model, options) {
-      options.success.call(options.context);
+    model.sync = function(method, m, opts) {
+      opts.success.call(opts.context);
     };
     model.save({data: 2, id: 1}, options);
     model.fetch(options);
@@ -578,8 +613,8 @@
         assert.equal(this, obj);
       }
     };
-    model.sync = function(method, model, options) {
-      options.error.call(options.context);
+    model.sync = function(method, m, opts) {
+      opts.error.call(opts.context);
     };
     model.save({data: 2, id: 1}, options);
     model.fetch(options);
@@ -593,7 +628,7 @@
     model.parse = function() {
       assert.ok(false);
     };
-    model.sync = function(method, model, options) {
+    model.sync = function(method, m, options) {
       options.success({i: ++i});
     };
     model.fetch({parse: false});
@@ -627,7 +662,7 @@
   QUnit.test('save in positional style', function(assert) {
     assert.expect(1);
     var model = new Backbone.Model();
-    model.sync = function(method, model, options) {
+    model.sync = function(method, m, options) {
       options.success();
     };
     model.save('title', 'Twelfth Night');
@@ -637,13 +672,13 @@
   QUnit.test('save with non-object success response', function(assert) {
     assert.expect(2);
     var model = new Backbone.Model();
-    model.sync = function(method, model, options) {
+    model.sync = function(method, m, options) {
       options.success('', options);
       options.success(null, options);
     };
     model.save({testing: 'empty'}, {
-      success: function(model) {
-        assert.deepEqual(model.attributes, {testing: 'empty'});
+      success: function(m) {
+        assert.deepEqual(m.attributes, {testing: 'empty'});
       }
     });
   });
@@ -660,16 +695,16 @@
   QUnit.test('save will pass extra options to success callback', function(assert) {
     assert.expect(1);
     var SpecialSyncModel = Backbone.Model.extend({
-      sync: function(method, model, options) {
+      sync: function(method, m, options) {
         _.extend(options, {specialSync: true});
-        return Backbone.Model.prototype.sync.call(this, method, model, options);
+        return Backbone.Model.prototype.sync.call(this, method, m, options);
       },
       urlRoot: '/test'
     });
 
     var model = new SpecialSyncModel();
 
-    var onSuccess = function(model, response, options) {
+    var onSuccess = function(m, response, options) {
       assert.ok(options.specialSync, 'Options were passed correctly to callback');
     };
 
@@ -687,16 +722,16 @@
   QUnit.test('fetch will pass extra options to success callback', function(assert) {
     assert.expect(1);
     var SpecialSyncModel = Backbone.Model.extend({
-      sync: function(method, model, options) {
+      sync: function(method, m, options) {
         _.extend(options, {specialSync: true});
-        return Backbone.Model.prototype.sync.call(this, method, model, options);
+        return Backbone.Model.prototype.sync.call(this, method, m, options);
       },
       urlRoot: '/test'
     });
 
     var model = new SpecialSyncModel();
 
-    var onSuccess = function(model, response, options) {
+    var onSuccess = function(m, response, options) {
       assert.ok(options.specialSync, 'Options were passed correctly to callback');
     };
 
@@ -717,16 +752,16 @@
   QUnit.test('destroy will pass extra options to success callback', function(assert) {
     assert.expect(1);
     var SpecialSyncModel = Backbone.Model.extend({
-      sync: function(method, model, options) {
+      sync: function(method, m, options) {
         _.extend(options, {specialSync: true});
-        return Backbone.Model.prototype.sync.call(this, method, model, options);
+        return Backbone.Model.prototype.sync.call(this, method, m, options);
       },
       urlRoot: '/test'
     });
 
     var model = new SpecialSyncModel({id: 'id'});
 
-    var onSuccess = function(model, response, options) {
+    var onSuccess = function(m, response, options) {
       assert.ok(options.specialSync, 'Options were passed correctly to callback');
     };
 
@@ -746,9 +781,9 @@
     var lastError;
     var model = new Backbone.Model();
     model.validate = function(attrs) {
-      if (attrs.admin != this.get('admin')) return "Can't change admin status.";
+      if (attrs.admin !== this.get('admin')) return "Can't change admin status.";
     };
-    model.on('invalid', function(model, error) {
+    model.on('invalid', function(m, error) {
       lastError = error;
     });
     var result = model.set({a: 100});
@@ -793,7 +828,7 @@
     model.validate = function(attrs) {
       if (attrs.admin) return "Can't change admin status.";
     };
-    model.on('invalid', function(model, error) {
+    model.on('invalid', function(m, error) {
       boundError = true;
     });
     var result = model.set({a: 100}, {validate: true});
@@ -848,14 +883,14 @@
   QUnit.test("Nested change events don't clobber previous attributes", function(assert) {
     assert.expect(4);
     new Backbone.Model()
-    .on('change:state', function(model, newState) {
-      assert.equal(model.previous('state'), undefined);
+    .on('change:state', function(m, newState) {
+      assert.equal(m.previous('state'), undefined);
       assert.equal(newState, 'hello');
       // Fire a nested change event.
-      model.set({other: 'whatever'});
+      m.set({other: 'whatever'});
     })
-    .on('change:state', function(model, newState) {
-      assert.equal(model.previous('state'), undefined);
+    .on('change:state', function(m, newState) {
+      assert.equal(m.previous('state'), undefined);
       assert.equal(newState, 'hello');
     })
     .set({state: 'hello'});
@@ -989,8 +1024,8 @@
 
   QUnit.test('`previous` for falsey keys', function(assert) {
     assert.expect(2);
-    var model = new Backbone.Model({0: true, '': true});
-    model.set({0: false, '': false}, {silent: true});
+    var model = new Backbone.Model({'0': true, '': true});
+    model.set({'0': false, '': false}, {silent: true});
     assert.equal(model.previous(0), true);
     assert.equal(model.previous(''), true);
   });
@@ -1021,7 +1056,7 @@
   QUnit.test('#1030 - `save` with `wait` results in correct attributes if success is called during sync', function(assert) {
     assert.expect(2);
     var model = new Backbone.Model({x: 1, y: 2});
-    model.sync = function(method, model, options) {
+    model.sync = function(method, m, options) {
       options.success();
     };
     model.on('change:x', function() { assert.ok(true); });
@@ -1038,7 +1073,7 @@
 
   QUnit.test('save turns on parse flag', function(assert) {
     var Model = Backbone.Model.extend({
-      sync: function(method, model, options) { assert.ok(options.parse); }
+      sync: function(method, m, options) { assert.ok(options.parse); }
     });
     new Model().save();
   });
@@ -1142,7 +1177,7 @@
       model.set({y: 1}, {silent: true});
       model.set({y: 2});
     });
-    model.on('change:y', function(model, val) {
+    model.on('change:y', function(m, val) {
       assert.equal(val, 2);
     });
     model.set({x: true});
@@ -1152,7 +1187,7 @@
     assert.expect(1);
     var changes = [];
     var model = new Backbone.Model();
-    model.on('change:b', function(model, val) { changes.push(val); });
+    model.on('change:b', function(m, val) { changes.push(val); });
     model.on('change', function() {
       model.set({b: 1});
     });
@@ -1202,11 +1237,11 @@
     assert.expect(3);
     var model = new Backbone.Model();
     var opts = {
-      success: function( model, resp, options ) {
+      success: function( m, resp, options ) {
         assert.ok(options);
       }
     };
-    model.sync = function(method, model, options) {
+    model.sync = function(method, m, options) {
       options.success();
     };
     model.save({id: 1}, opts);
@@ -1217,7 +1252,7 @@
   QUnit.test("#1412 - Trigger 'sync' event.", function(assert) {
     assert.expect(3);
     var model = new Backbone.Model({id: 1});
-    model.sync = function(method, model, options) { options.success(); };
+    model.sync = function(method, m, options) { options.success(); };
     model.on('sync', function(){ assert.ok(true); });
     model.fetch();
     model.save();
@@ -1248,7 +1283,7 @@
     assert.expect(1);
     var Model = Backbone.Model.extend({
       url: '/test/',
-      sync: function(method, model, options){ options.success(); },
+      sync: function(method, m, options){ options.success(); },
       validate: function(){ return 'invalid'; }
     });
     var model = new Model({id: 1});
@@ -1271,7 +1306,7 @@
     var done = assert.async();
     assert.expect(0);
     var Model = Backbone.Model.extend({
-      sync: function(method, model, options) {
+      sync: function(method, m, options) {
         setTimeout(function(){
           options.success();
           done();
@@ -1301,7 +1336,7 @@
       model.set({b: 2}, {silent: true});
       model.unset('c', {silent: true});
     });
-    model.on('change:a change:b change:c', function(model, val) { changes.push(val); });
+    model.on('change:a change:b change:c', function(m, val) { changes.push(val); });
     model.set({a: 'a', b: 1, c: 'item'});
     assert.deepEqual(changes, ['a', 1, 'item']);
     assert.deepEqual(model.attributes, {a: 'c', b: 2});
@@ -1319,7 +1354,7 @@
     assert.expect(2);
     var changes = [];
     var model = new Backbone.Model();
-    model.on('change:a change:b change:c', function(model, val) { changes.push(val); });
+    model.on('change:a change:b change:c', function(m, val) { changes.push(val); });
     model.on('change', function() {
       model.set({a: 'c'}, {silent: true});
     });
@@ -1410,4 +1445,4 @@
     assert.equal(model.id, 3);
   });
 
-})();
+})(QUnit);

vendor/backbone/test/noconflict.js

@@ -1,4 +1,4 @@
-(function() {
+(function(QUnit) {
 
   QUnit.module('Backbone.noConflict');
 
@@ -10,4 +10,4 @@
     assert.equal(window.Backbone, noconflictBackbone, 'Backbone is still pointing to the original Backbone');
   });
 
-})();
+})(QUnit);

vendor/backbone/test/router.js

@@ -1,11 +1,11 @@
-(function() {
+(function(QUnit) {
 
   var router = null;
   var location = null;
   var lastRoute = null;
   var lastArgs = [];
 
-  var onRoute = function(router, route, args) {
+  var onRoute = function(routerParam, route, args) {
     lastRoute = route;
     lastArgs = args;
   };
@@ -28,7 +28,8 @@
         'fragment',
         'pathname',
         'protocol'
-      ));
+     ));
+
       // In IE, anchor.pathname does not contain a leading slash though
       // window.location.pathname does.
       if (!/^\//.test(this.pathname)) this.pathname = '/' + this.pathname;
@@ -42,7 +43,7 @@
 
   QUnit.module('Backbone.Router', {
 
-    setup: function() {
+    beforeEach: function() {
       location = new Location('http://example.com');
       Backbone.history = _.extend(new Backbone.History, {location: location});
       router = new Router({testing: 101});
@@ -53,7 +54,7 @@
       Backbone.history.on('route', onRoute);
     },
 
-    teardown: function() {
+    afterEach: function() {
       Backbone.history.stop();
       Backbone.history.off('route', onRoute);
     }
@@ -95,6 +96,10 @@
       '*anything': 'anything'
     },
 
+    preinitialize: function(options) {
+      this.testpreinit = 'foo';
+    },
+
     initialize: function(options) {
       this.testing = options.testing;
       this.route('implicit', 'implicit');
@@ -121,20 +126,20 @@
       this.charType = 'escaped';
     },
 
-    contacts: function(){
+    contacts: function() {
       this.contact = 'index';
     },
 
-    newContact: function(){
+    newContact: function() {
       this.contact = 'new';
     },
 
-    loadContact: function(){
+    loadContact: function() {
       this.contact = 'load';
     },
 
-    optionalItem: function(arg){
-      this.arg = arg != void 0 ? arg : null;
+    optionalItem: function(arg) {
+      this.arg = arg !== void 0 ? arg : null;
     },
 
     splat: function(args) {
@@ -181,6 +186,11 @@
     assert.equal(router.testing, 101);
   });
 
+  QUnit.test('preinitialize', function(assert) {
+    assert.expect(1);
+    assert.equal(router.testpreinit, 'foo');
+  });
+
   QUnit.test('routes (simple)', function(assert) {
     assert.expect(4);
     location.replace('http://example.com#search/news');
@@ -234,10 +244,11 @@
     assert.ok(Backbone.history.navigate('search/manhattan/p20', true));
   });
 
-  QUnit.test('route precedence via navigate', function(assert){
+  QUnit.test('route precedence via navigate', function(assert) {
     assert.expect(6);
-    // check both 0.9.x and backwards-compatibility options
-    _.each([{trigger: true}, true], function( options ){
+
+    // Check both 0.9.x and backwards-compatibility options
+    _.each([{trigger: true}, true], function(options) {
       Backbone.history.navigate('contacts', options);
       assert.equal(router.contact, 'index');
       Backbone.history.navigate('contacts/new', options);
@@ -249,7 +260,7 @@
 
   QUnit.test('loadUrl is not called for identical routes.', function(assert) {
     assert.expect(0);
-    Backbone.history.loadUrl = function(){ assert.ok(false); };
+    Backbone.history.loadUrl = function() { assert.ok(false); };
     location.replace('http://example.com#route');
     Backbone.history.navigate('route');
     Backbone.history.navigate('/route');
@@ -345,16 +356,16 @@
     assert.strictEqual(router.path, 'c/d/e');
   });
 
-  QUnit.test("fires event when router doesn't have callback on it", function(assert) {
+  QUnit.test('fires event when router doesn\'t have callback on it', function(assert) {
     assert.expect(1);
-    router.on('route:noCallback', function(){ assert.ok(true); });
+    router.on('route:noCallback', function() { assert.ok(true); });
     location.replace('http://example.com#noCallback');
     Backbone.history.checkUrl();
   });
 
   QUnit.test('No events are triggered if #execute returns false.', function(assert) {
     assert.expect(1);
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
 
       routes: {
         foo: function() {
@@ -369,9 +380,9 @@
 
     });
 
-    var router = new Router;
+    var myRouter = new MyRouter;
 
-    router.on('route route:foo', function() {
+    myRouter.on('route route:foo', function() {
       assert.ok(false);
     });
 
@@ -536,8 +547,8 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(){},
-        replaceState: function(){}
+        pushState: function() {},
+        replaceState: function() {}
       }
     });
     Backbone.history.start({root: 'root'});
@@ -551,8 +562,8 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(){},
-        replaceState: function(state, title, url){
+        pushState: function() {},
+        replaceState: function(state, title, url) {
           assert.strictEqual(url, '/root/x/y');
         }
       }
@@ -570,8 +581,8 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(){},
-        replaceState: function(){}
+        pushState: function() {},
+        replaceState: function() {}
       }
     });
     Backbone.history.start({root: ''});
@@ -625,8 +636,8 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(){},
-        replaceState: function(state, title, url){
+        pushState: function() {},
+        replaceState: function(state, title, url) {
           assert.strictEqual(url, '/root/x/y?a=b');
         }
       }
@@ -639,14 +650,14 @@
 
   QUnit.test('#1746 - Router allows empty route.', function(assert) {
     assert.expect(1);
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {'': 'empty'},
-      empty: function(){},
-      route: function(route){
+      empty: function() {},
+      route: function(route) {
         assert.strictEqual(route, '');
       }
     });
-    new Router;
+    new MyRouter;
   });
 
   QUnit.test('#1794 - Trailing space in fragments.', function(assert) {
@@ -655,7 +666,8 @@
     assert.strictEqual(history.getFragment('fragment   '), 'fragment');
   });
 
-  QUnit.test('#1820 - Leading slash and trailing space.', 1, function(assert) {
+  QUnit.test('#1820 - Leading slash and trailing space.', function(assert) {
+    assert.expect(1);
     var history = new Backbone.History;
     assert.strictEqual(history.getFragment('/fragment '), 'fragment');
   });
@@ -670,7 +682,7 @@
     assert.strictEqual(router.z, '123');
   });
 
-  QUnit.test("#2062 - Trigger 'route' event on router instance.", function(assert) {
+  QUnit.test('#2062 - Trigger "route" event on router instance.', function(assert) {
     assert.expect(2);
     router.on('route', function(name, args) {
       assert.strictEqual(name, 'routeEvent');
@@ -698,8 +710,8 @@
       }
     });
 
-    var router = new RouterExtended();
-    assert.deepEqual({home: 'root', index: 'index.html', show: 'show', search: 'search'}, router.routes);
+    var myRouter = new RouterExtended();
+    assert.deepEqual({home: 'root', index: 'index.html', show: 'show', search: 'search'}, myRouter.routes);
   });
 
   QUnit.test('#2538 - hashChange to pushState only if both requested.', function(assert) {
@@ -709,8 +721,8 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(){},
-        replaceState: function(){ assert.ok(false); }
+        pushState: function() {},
+        replaceState: function() { assert.ok(false); }
       }
     });
     Backbone.history.start({
@@ -726,17 +738,17 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(){},
-        replaceState: function(){}
+        pushState: function() {},
+        replaceState: function() {}
       }
     });
 
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
         hash: function() { assert.ok(false); }
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
 
     location.replace('http://example.com/');
     Backbone.history.start({
@@ -753,7 +765,7 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(state, title, url){
+        pushState: function(state, title, url) {
           assert.strictEqual(url, '/root');
         }
       }
@@ -785,7 +797,7 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(state, title, url){
+        pushState: function(state, title, url) {
           assert.strictEqual(url, '/root?x=1');
         }
       }
@@ -807,12 +819,12 @@
       }
     });
 
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
         path: function() { assert.ok(true); }
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
 
     location.replace('http://example.com/');
     Backbone.history.start({pushState: true, hashChange: false});
@@ -821,14 +833,14 @@
 
   QUnit.test('Do not decode the search params.', function(assert) {
     assert.expect(1);
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
-        path: function(params){
+        path: function(params) {
           assert.strictEqual(params, 'x=y%3Fz');
         }
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.navigate('path?x=y%3Fz', true);
   });
 
@@ -837,14 +849,14 @@
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
     Backbone.history.start({pushState: true});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
         path: function(params) {
           assert.strictEqual(params, 'x=y');
         }
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     location.replace('http://example.com/path?x=y#hash');
     Backbone.history.checkUrl();
   });
@@ -854,14 +866,14 @@
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
     Backbone.history.start({pushState: true});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
         path: function(params) {
           assert.strictEqual(params, 'x=y');
         }
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.navigate('path?x=y#hash', true);
   });
 
@@ -870,14 +882,14 @@
     location.replace('http://example.com/myyjä');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
         myyjä: function() {
           assert.ok(true);
         }
       }
     });
-    new Router;
+    new MyRouter;
     Backbone.history.start({pushState: true});
   });
 
@@ -887,14 +899,14 @@
     location.pathname = '/myyj%C3%A4/foo%20%25%3F%2f%40%25%20bar';
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
         'myyjä/:query': function(query) {
           assert.strictEqual(query, 'foo %?/@% bar');
         }
       }
     });
-    new Router;
+    new MyRouter;
     Backbone.history.start({pushState: true});
   });
 
@@ -903,14 +915,14 @@
     location.replace('http://example.com/stuff%0Anonsense?param=foo%0Abar');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
         'stuff\nnonsense': function() {
           assert.ok(true);
         }
       }
     });
-    new Router;
+    new MyRouter;
     Backbone.history.start({pushState: true});
   });
 
@@ -919,16 +931,16 @@
     location.replace('http://example.com#foo/123/bar?x=y');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {'foo/:id/bar': 'foo'},
-      foo: function(){},
+      foo: function() {},
       execute: function(callback, args, name) {
         assert.strictEqual(callback, this.foo);
         assert.deepEqual(args, ['123', 'x=y']);
         assert.strictEqual(name, 'foo');
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.start();
   });
 
@@ -953,8 +965,8 @@
     Backbone.history = _.extend(new Backbone.History, {
       location: location,
       history: {
-        pushState: function(){ assert.ok(false); },
-        replaceState: function(){ assert.ok(false); }
+        pushState: function() { assert.ok(false); },
+        replaceState: function() { assert.ok(false); }
       }
     });
     Backbone.history.start({pushState: true});
@@ -967,8 +979,8 @@
     Backbone.history.stop();
     location.replace('http://example.com#login?a=value&backUrl=https%3A%2F%2Fwww.msn.com%2Fidp%2Fidpdemo%3Fspid%3Dspdemo%26target%3Db');
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var router = new Backbone.Router;
-    router.route('login', function(params) {
+    var myRouter = new Backbone.Router;
+    myRouter.route('login', function(params) {
       assert.strictEqual(params, 'a=value&backUrl=https%3A%2F%2Fwww.msn.com%2Fidp%2Fidpdemo%3Fspid%3Dspdemo%26target%3Db');
     });
     Backbone.history.start();
@@ -991,35 +1003,35 @@
     Backbone.history.start({root: '/root', pushState: true});
   });
 
-  QUnit.test("Paths that don't match the root should not match no root", function(assert) {
+  QUnit.test('Paths that don\'t match the root should not match no root', function(assert) {
     assert.expect(0);
     location.replace('http://example.com/foo');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
-        foo: function(){
+        foo: function() {
           assert.ok(false, 'should not match unless root matches');
         }
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.start({root: 'root', pushState: true});
   });
 
-  QUnit.test("Paths that don't match the root should not match roots of the same length", function(assert) {
+  QUnit.test('Paths that don\'t match the root should not match roots of the same length', function(assert) {
     assert.expect(0);
     location.replace('http://example.com/xxxx/foo');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
+    var MyRouter = Backbone.Router.extend({
       routes: {
-        foo: function(){
+        foo: function() {
           assert.ok(false, 'should not match unless root matches');
         }
       }
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.start({root: 'root', pushState: true});
   });
 
@@ -1028,10 +1040,10 @@
     location.replace('http://example.com/x+y.z/foo');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
-      routes: {foo: function(){ assert.ok(true); }}
+    var MyRouter = Backbone.Router.extend({
+      routes: {foo: function() { assert.ok(true); }}
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.start({root: 'x+y.z', pushState: true});
   });
 
@@ -1040,10 +1052,10 @@
     location.replace('http://example.com/®ooτ/foo');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
-      routes: {foo: function(){ assert.ok(true); }}
+    var MyRouter = Backbone.Router.extend({
+      routes: {foo: function() { assert.ok(true); }}
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.start({root: '®ooτ', pushState: true});
   });
 
@@ -1052,11 +1064,18 @@
     location.replace('http://example.com/®ooτ');
     Backbone.history.stop();
     Backbone.history = _.extend(new Backbone.History, {location: location});
-    var Router = Backbone.Router.extend({
-      routes: {'': function(){ assert.ok(true); }}
+    var MyRouter = Backbone.Router.extend({
+      routes: {'': function() { assert.ok(true); }}
     });
-    var router = new Router;
+    var myRouter = new MyRouter;
     Backbone.history.start({root: '®ooτ', pushState: true});
   });
 
-})();
+  QUnit.test('#4025 - navigate updates URL hash as is', function(assert) {
+    assert.expect(1);
+    var route = 'search/has%20space';
+    Backbone.history.navigate(route);
+    assert.strictEqual(location.hash, '#' + route);
+  });
+
+})(QUnit);

vendor/backbone/test/setup/environment.js

@@ -1,4 +1,4 @@
-(function() {
+(function(QUnit) {
 
   var sync = Backbone.sync;
   var ajax = Backbone.ajax;
@@ -14,7 +14,7 @@
     var env = QUnit.config.current.testEnvironment;
 
     // We never want to actually call these during tests.
-    history.pushState = history.replaceState = function(){};
+    history.pushState = history.replaceState = function() {};
 
     // Capture ajax settings for comparison.
     Backbone.ajax = function(settings) {
@@ -42,4 +42,4 @@
     history.replaceState = replaceState;
   });
 
-})();
+})(QUnit);

vendor/backbone/test/sync.js

@@ -1,4 +1,4 @@
-(function() {
+(function(QUnit) {
 
   var Library = Backbone.Collection.extend({
     url: function() { return '/library'; }
@@ -142,7 +142,7 @@
   QUnit.test('urlError', function(assert) {
     assert.expect(2);
     var model = new Backbone.Model();
-    assert.throws(function() {
+    assert.raises(function() {
       model.fetch();
     });
     model.fetch({url: '/one/two'});
@@ -158,7 +158,7 @@
 
   QUnit.test('Backbone.ajax', function(assert) {
     assert.expect(1);
-    Backbone.ajax = function(settings){
+    Backbone.ajax = function(settings) {
       assert.strictEqual(settings.url, '/test');
     };
     var model = new Backbone.Model();
@@ -228,7 +228,7 @@
     assert.expect(2);
     var model = new Backbone.Model;
     model.url = '/test';
-    model.on('error', function(model, xhr, options) {
+    model.on('error', function(m, xhr, options) {
       assert.strictEqual(options.textStatus, 'textStatus');
       assert.strictEqual(options.errorThrown, 'errorThrown');
     });
@@ -236,4 +236,4 @@
     this.ajaxSettings.error({}, 'textStatus', 'errorThrown');
   });
 
-})();
+})(QUnit);

vendor/backbone/test/view.js

@@ -1,19 +1,24 @@
-(function() {
+(function(QUnit) {
 
   var view;
 
   QUnit.module('Backbone.View', {
 
-    beforeEach: function(assert) {
+    beforeEach: function() {
       $('#qunit-fixture').append(
         '<div id="testElement"><h1>Test</h1></div>'
-      );
+     );
 
       view = new Backbone.View({
         id: 'test-view',
         className: 'test-view',
         other: 'non-special-option'
       });
+    },
+
+    afterEach: function() {
+      $('#testElement').remove();
+      $('#test-view').remove();
     }
 
   });
@@ -27,9 +32,9 @@
 
   QUnit.test('$', function(assert) {
     assert.expect(2);
-    var view = new Backbone.View;
-    view.setElement('<p><a><b>test</b></a></p>');
-    var result = view.$('a b');
+    var myView = new Backbone.View;
+    myView.setElement('<p><a><b>test</b></a></p>');
+    var result = myView.$('a b');
 
     assert.strictEqual(result[0].innerHTML, 'test');
     assert.ok(result.length === +result.length);
@@ -37,12 +42,12 @@
 
   QUnit.test('$el', function(assert) {
     assert.expect(3);
-    var view = new Backbone.View;
-    view.setElement('<p><a><b>test</b></a></p>');
-    assert.strictEqual(view.el.nodeType, 1);
+    var myView = new Backbone.View;
+    myView.setElement('<p><a><b>test</b></a></p>');
+    assert.strictEqual(myView.el.nodeType, 1);
 
-    assert.ok(view.$el instanceof Backbone.$);
-    assert.strictEqual(view.$el[0], view.el);
+    assert.ok(myView.$el instanceof Backbone.$);
+    assert.strictEqual(myView.$el[0], myView.el);
   });
 
   QUnit.test('initialize', function(assert) {
@@ -56,55 +61,77 @@
     assert.strictEqual(new View().one, 1);
   });
 
+  QUnit.test('preinitialize', function(assert) {
+    assert.expect(1);
+    var View = Backbone.View.extend({
+      preinitialize: function() {
+        this.one = 1;
+      }
+    });
+
+    assert.strictEqual(new View().one, 1);
+  });
+
+  QUnit.test('preinitialize occurs before the view is set up', function(assert) {
+    assert.expect(2);
+    var View = Backbone.View.extend({
+      preinitialize: function() {
+        assert.equal(this.el, undefined);
+      }
+    });
+    var _view = new View({});
+    assert.notEqual(_view.el, undefined);
+  });
+
   QUnit.test('render', function(assert) {
     assert.expect(1);
-    var view = new Backbone.View;
-    assert.equal(view.render(), view, '#render returns the view instance');
+    var myView = new Backbone.View;
+    assert.equal(myView.render(), myView, '#render returns the view instance');
   });
 
   QUnit.test('delegateEvents', function(assert) {
     assert.expect(6);
     var counter1 = 0, counter2 = 0;
 
-    var view = new Backbone.View({el: '#testElement'});
-    view.increment = function(){ counter1++; };
-    view.$el.on('click', function(){ counter2++; });
+    var myView = new Backbone.View({el: '#testElement'});
+    myView.increment = function() { counter1++; };
+    myView.$el.on('click', function() { counter2++; });
 
     var events = {'click h1': 'increment'};
 
-    view.delegateEvents(events);
-    view.$('h1').trigger('click');
+    myView.delegateEvents(events);
+    myView.$('h1').trigger('click');
     assert.equal(counter1, 1);
     assert.equal(counter2, 1);
 
-    view.$('h1').trigger('click');
+    myView.$('h1').trigger('click');
     assert.equal(counter1, 2);
     assert.equal(counter2, 2);
 
-    view.delegateEvents(events);
-    view.$('h1').trigger('click');
+    myView.delegateEvents(events);
+    myView.$('h1').trigger('click');
     assert.equal(counter1, 3);
     assert.equal(counter2, 3);
   });
 
   QUnit.test('delegate', function(assert) {
     assert.expect(3);
-    var view = new Backbone.View({el: '#testElement'});
-    view.delegate('click', 'h1', function() {
+    var myView = new Backbone.View({el: '#testElement'});
+    myView.delegate('click', 'h1', function() {
       assert.ok(true);
     });
-    view.delegate('click', function() {
+    myView.delegate('click', function() {
       assert.ok(true);
     });
-    view.$('h1').trigger('click');
+    myView.$('h1').trigger('click');
 
-    assert.equal(view.delegate(), view, '#delegate returns the view instance');
+    assert.equal(myView.delegate(), myView, '#delegate returns the view instance');
   });
 
   QUnit.test('delegateEvents allows functions for callbacks', function(assert) {
     assert.expect(3);
-    var view = new Backbone.View({el: '<p></p>'});
-    view.counter = 0;
+    var myView = new Backbone.View({el: '<p></p>'});
+    myView.counter = 0;
 
     var events = {
       click: function() {
@@ -112,97 +139,96 @@
       }
     };
 
-    view.delegateEvents(events);
-    view.$el.trigger('click');
-    assert.equal(view.counter, 1);
+    myView.delegateEvents(events);
+    myView.$el.trigger('click');
+    assert.equal(myView.counter, 1);
 
-    view.$el.trigger('click');
-    assert.equal(view.counter, 2);
+    myView.$el.trigger('click');
+    assert.equal(myView.counter, 2);
 
-    view.delegateEvents(events);
-    view.$el.trigger('click');
-    assert.equal(view.counter, 3);
+    myView.delegateEvents(events);
+    myView.$el.trigger('click');
+    assert.equal(myView.counter, 3);
   });
 
-
   QUnit.test('delegateEvents ignore undefined methods', function(assert) {
     assert.expect(0);
-    var view = new Backbone.View({el: '<p></p>'});
-    view.delegateEvents({'click': 'undefinedMethod'});
-    view.$el.trigger('click');
+    var myView = new Backbone.View({el: '<p></p>'});
+    myView.delegateEvents({click: 'undefinedMethod'});
+    myView.$el.trigger('click');
   });
 
   QUnit.test('undelegateEvents', function(assert) {
     assert.expect(7);
     var counter1 = 0, counter2 = 0;
 
-    var view = new Backbone.View({el: '#testElement'});
-    view.increment = function(){ counter1++; };
-    view.$el.on('click', function(){ counter2++; });
+    var myView = new Backbone.View({el: '#testElement'});
+    myView.increment = function() { counter1++; };
+    myView.$el.on('click', function() { counter2++; });
 
     var events = {'click h1': 'increment'};
 
-    view.delegateEvents(events);
-    view.$('h1').trigger('click');
+    myView.delegateEvents(events);
+    myView.$('h1').trigger('click');
     assert.equal(counter1, 1);
     assert.equal(counter2, 1);
 
-    view.undelegateEvents();
-    view.$('h1').trigger('click');
+    myView.undelegateEvents();
+    myView.$('h1').trigger('click');
     assert.equal(counter1, 1);
     assert.equal(counter2, 2);
 
-    view.delegateEvents(events);
-    view.$('h1').trigger('click');
+    myView.delegateEvents(events);
+    myView.$('h1').trigger('click');
     assert.equal(counter1, 2);
     assert.equal(counter2, 3);
 
-    assert.equal(view.undelegateEvents(), view, '#undelegateEvents returns the view instance');
+    assert.equal(myView.undelegateEvents(), myView, '#undelegateEvents returns the view instance');
   });
 
   QUnit.test('undelegate', function(assert) {
     assert.expect(1);
-    view = new Backbone.View({el: '#testElement'});
-    view.delegate('click', function() { assert.ok(false); });
-    view.delegate('click', 'h1', function() { assert.ok(false); });
+    var myView = new Backbone.View({el: '#testElement'});
+    myView.delegate('click', function() { assert.ok(false); });
+    myView.delegate('click', 'h1', function() { assert.ok(false); });
 
-    view.undelegate('click');
+    myView.undelegate('click');
 
-    view.$('h1').trigger('click');
-    view.$el.trigger('click');
+    myView.$('h1').trigger('click');
+    myView.$el.trigger('click');
 
-    assert.equal(view.undelegate(), view, '#undelegate returns the view instance');
+    assert.equal(myView.undelegate(), myView, '#undelegate returns the view instance');
   });
 
   QUnit.test('undelegate with passed handler', function(assert) {
     assert.expect(1);
-    view = new Backbone.View({el: '#testElement'});
+    var myView = new Backbone.View({el: '#testElement'});
     var listener = function() { assert.ok(false); };
-    view.delegate('click', listener);
-    view.delegate('click', function() { assert.ok(true); });
-    view.undelegate('click', listener);
-    view.$el.trigger('click');
+    myView.delegate('click', listener);
+    myView.delegate('click', function() { assert.ok(true); });
+    myView.undelegate('click', listener);
+    myView.$el.trigger('click');
   });
 
   QUnit.test('undelegate with selector', function(assert) {
     assert.expect(2);
-    view = new Backbone.View({el: '#testElement'});
-    view.delegate('click', function() { assert.ok(true); });
-    view.delegate('click', 'h1', function() { assert.ok(false); });
-    view.undelegate('click', 'h1');
-    view.$('h1').trigger('click');
-    view.$el.trigger('click');
+    var myView = new Backbone.View({el: '#testElement'});
+    myView.delegate('click', function() { assert.ok(true); });
+    myView.delegate('click', 'h1', function() { assert.ok(false); });
+    myView.undelegate('click', 'h1');
+    myView.$('h1').trigger('click');
+    myView.$el.trigger('click');
   });
 
   QUnit.test('undelegate with handler and selector', function(assert) {
     assert.expect(2);
-    view = new Backbone.View({el: '#testElement'});
-    view.delegate('click', function() { assert.ok(true); });
-    var handler = function(){ assert.ok(false); };
-    view.delegate('click', 'h1', handler);
-    view.undelegate('click', 'h1', handler);
-    view.$('h1').trigger('click');
-    view.$el.trigger('click');
+    var myView = new Backbone.View({el: '#testElement'});
+    myView.delegate('click', function() { assert.ok(true); });
+    var handler = function() { assert.ok(false); };
+    myView.delegate('click', 'h1', handler);
+    myView.undelegate('click', 'h1', handler);
+    myView.$('h1').trigger('click');
+    myView.$el.trigger('click');
   });
 
   QUnit.test('tagName can be provided as a string', function(assert) {
@@ -302,11 +328,11 @@
       }
     });
 
-    var view = new View;
-    assert.strictEqual(view.el.className, 'backboneClass');
-    assert.strictEqual(view.el.id, 'backboneId');
-    assert.strictEqual(view.$el.attr('class'), 'backboneClass');
-    assert.strictEqual(view.$el.attr('id'), 'backboneId');
+    var myView = new View;
+    assert.strictEqual(myView.el.className, 'backboneClass');
+    assert.strictEqual(myView.el.id, 'backboneId');
+    assert.strictEqual(myView.$el.attr('class'), 'backboneClass');
+    assert.strictEqual(myView.$el.attr('id'), 'backboneId');
   });
 
   QUnit.test('multiple views per element', function(assert) {
@@ -345,7 +371,7 @@
       }
     });
 
-    var view = new View;
+    var myView = new View;
     $('body').trigger('fake$event').trigger('fake$event');
 
     $('body').off('fake$event');
@@ -356,11 +382,11 @@
     assert.expect(2);
     var $el = $('body');
 
-    var view = new Backbone.View({el: $el});
-    assert.ok(view.$el === $el);
+    var myView = new Backbone.View({el: $el});
+    assert.ok(myView.$el === $el);
 
-    view.setElement($el = $($el));
-    assert.ok(view.$el === $el);
+    myView.setElement($el = $($el));
+    assert.ok(myView.$el === $el);
   });
 
   QUnit.test('#986 - Undelegate before changing element.', function(assert) {
@@ -371,13 +397,13 @@
     var View = Backbone.View.extend({
       events: {
         click: function(e) {
-          assert.ok(view.el === e.target);
+          assert.ok(myView.el === e.target);
         }
       }
     });
 
-    var view = new View({el: button1});
-    view.setElement(button2);
+    var myView = new View({el: button1});
+    myView.setElement(button2);
 
     button1.trigger('click');
     button2.trigger('click');
@@ -400,19 +426,19 @@
     assert.expect(0);
     var View = Backbone.View.extend({
       initialize: function() {
-        this.listenTo(this.model, 'all x', function(){ assert.ok(false); });
-        this.listenTo(this.collection, 'all x', function(){ assert.ok(false); });
+        this.listenTo(this.model, 'all x', function() { assert.ok(false); });
+        this.listenTo(this.collection, 'all x', function() { assert.ok(false); });
       }
     });
 
-    var view = new View({
+    var myView = new View({
       model: new Backbone.Model,
       collection: new Backbone.Collection
     });
 
-    view.stopListening();
-    view.model.trigger('x');
-    view.collection.trigger('x');
+    myView.stopListening();
+    myView.model.trigger('x');
+    myView.collection.trigger('x');
   });
 
   QUnit.test('Provide function for el.', function(assert) {
@@ -423,9 +449,9 @@
       }
     });
 
-    var view = new View;
-    assert.ok(view.$el.is('p'));
-    assert.ok(view.$el.has('a'));
+    var myView = new View;
+    assert.ok(myView.$el.is('p'));
+    assert.ok(myView.$el.has('a'));
   });
 
   QUnit.test('events passed in options', function(assert) {
@@ -439,52 +465,52 @@
       }
     });
 
-    var view = new View({
+    var myView = new View({
       events: {
         'click h1': 'increment'
       }
     });
 
-    view.$('h1').trigger('click').trigger('click');
+    myView.$('h1').trigger('click').trigger('click');
     assert.equal(counter, 2);
   });
 
   QUnit.test('remove', function(assert) {
     assert.expect(2);
-    var view = new Backbone.View;
+    var myView = new Backbone.View;
     document.body.appendChild(view.el);
 
-    view.delegate('click', function() { assert.ok(false); });
-    view.listenTo(view, 'all x', function() { assert.ok(false); });
+    myView.delegate('click', function() { assert.ok(false); });
+    myView.listenTo(myView, 'all x', function() { assert.ok(false); });
 
-    assert.equal(view.remove(), view, '#remove returns the view instance');
-    view.$el.trigger('click');
-    view.trigger('x');
+    assert.equal(myView.remove(), myView, '#remove returns the view instance');
+    myView.$el.trigger('click');
+    myView.trigger('x');
 
     // In IE8 and below, parentNode still exists but is not document.body.
-    assert.notEqual(view.el.parentNode, document.body);
+    assert.notEqual(myView.el.parentNode, document.body);
   });
 
   QUnit.test('setElement', function(assert) {
     assert.expect(3);
-    var view = new Backbone.View({
+    var myView = new Backbone.View({
       events: {
         click: function() { assert.ok(false); }
       }
     });
-    view.events = {
+    myView.events = {
       click: function() { assert.ok(true); }
     };
-    var oldEl = view.el;
-    var $oldEl = view.$el;
+    var oldEl = myView.el;
+    var $oldEl = myView.$el;
 
-    view.setElement(document.createElement('div'));
+    myView.setElement(document.createElement('div'));
 
     $oldEl.click();
-    view.$el.click();
+    myView.$el.click();
 
-    assert.notEqual(oldEl, view.el);
-    assert.notEqual($oldEl, view.$el);
+    assert.notEqual(oldEl, myView.el);
+    assert.notEqual($oldEl, myView.$el);
   });
 
-})();
+})(QUnit);

vendor/benchmark.js/LICENSE

@@ -1,22 +0,0 @@
-Copyright 2010-2015 Mathias Bynens <http://mathiasbynens.be/>
-Based on JSLitmus.js, copyright Robert Kieffer <http://broofa.com/>
-Modified by John-David Dalton <http://allyoucanleet.com/>
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/underscore/LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative
+Copyright (c) 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative
 Reporters & Editors
 
 Permission is hereby granted, free of charge, to any person

vendor/underscore/test/arrays.js

@@ -15,6 +15,10 @@
     result = _.map([[1, 2, 3], [1, 2, 3]], _.first);
     assert.deepEqual(result, [1, 1], 'works well with _.map');
     assert.equal(_.first(null), void 0, 'returns undefined when called on null');
+
+    Array.prototype[0] = 'boo';
+    assert.equal(_.first([]), void 0, 'return undefined when called on a empty array');
+    delete Array.prototype[0];
   });
 
   QUnit.test('head', function(assert) {
@@ -66,6 +70,10 @@
     result = _.map([[1, 2, 3], [1, 2, 3]], _.last);
     assert.deepEqual(result, [3, 3], 'works well with _.map');
     assert.equal(_.last(null), void 0, 'returns undefined when called on null');
+
+    var arr = [];
+    arr[-1] = 'boo';
+    assert.equal(_.last(arr), void 0, 'return undefined when called on a empty array');
   });
 
   QUnit.test('compact', function(assert) {
@@ -143,33 +151,23 @@
   QUnit.test('uniq', function(assert) {
     var list = [1, 2, 1, 3, 1, 4];
     assert.deepEqual(_.uniq(list), [1, 2, 3, 4], 'can find the unique values of an unsorted array');
-
     list = [1, 1, 1, 2, 2, 3];
     assert.deepEqual(_.uniq(list, true), [1, 2, 3], 'can find the unique values of a sorted array faster');
 
-    list = [{name: 'moe'}, {name: 'curly'}, {name: 'larry'}, {name: 'curly'}];
-    var iterator = function(value) { return value.name; };
-    assert.deepEqual(_.map(_.uniq(list, false, iterator), iterator), ['moe', 'curly', 'larry'], 'can find the unique values of an array using a custom iterator');
+    list = [{name: 'Moe'}, {name: 'Curly'}, {name: 'Larry'}, {name: 'Curly'}];
+    var expected = [{name: 'Moe'}, {name: 'Curly'}, {name: 'Larry'}];
+    var iterator = function(stooge) { return stooge.name; };
+    assert.deepEqual(_.uniq(list, false, iterator), expected, 'uses the result of `iterator` for uniqueness comparisons (unsorted case)');
+    assert.deepEqual(_.uniq(list, iterator), expected, '`sorted` argument defaults to false when omitted');
+    assert.deepEqual(_.uniq(list, 'name'), expected, 'when `iterator` is a string, uses that key for comparisons (unsorted case)');
 
-    assert.deepEqual(_.map(_.uniq(list, iterator), iterator), ['moe', 'curly', 'larry'], 'can find the unique values of an array using a custom iterator without specifying whether array is sorted');
-
-    iterator = function(value) { return value + 1; };
-    list = [1, 2, 2, 3, 4, 4];
-    assert.deepEqual(_.uniq(list, true, iterator), [1, 2, 3, 4], 'iterator works with sorted array');
-
-    var kittens = [
-      {kitten: 'Celery', cuteness: 8},
-      {kitten: 'Juniper', cuteness: 10},
-      {kitten: 'Spottis', cuteness: 10}
-    ];
-
-    var expected = [
-      {kitten: 'Celery', cuteness: 8},
-      {kitten: 'Juniper', cuteness: 10}
-    ];
-
-    assert.deepEqual(_.uniq(kittens, true, 'cuteness'), expected, 'string iterator works with sorted array');
+    list = [{score: 8}, {score: 10}, {score: 10}];
+    expected = [{score: 8}, {score: 10}];
+    iterator = function(item) { return item.score; };
+    assert.deepEqual(_.uniq(list, true, iterator), expected, 'uses the result of `iterator` for uniqueness comparisons (sorted case)');
+    assert.deepEqual(_.uniq(list, true, 'score'), expected, 'when `iterator` is a string, uses that key for comparisons (sorted case)');
 
+    assert.deepEqual(_.uniq([{0: 1}, {0: 1}, {0: 1}, {0: 2}], 0), [{0: 1}, {0: 2}], 'can use falsey pluck like iterator');
 
     var result = (function(){ return _.uniq(arguments); }(1, 2, 1, 3, 1, 4));
     assert.deepEqual(result, [1, 2, 3, 4], 'works on an arguments object');
@@ -177,19 +175,17 @@
     var a = {}, b = {}, c = {};
     assert.deepEqual(_.uniq([a, b, a, b, c]), [a, b, c], 'works on values that can be tested for equivalency but not ordered');
 
-    assert.deepEqual(_.uniq(null), []);
+    assert.deepEqual(_.uniq(null), [], 'returns an empty array when `array` is not iterable');
 
     var context = {};
     list = [3];
     _.uniq(list, function(value, index, array) {
-      assert.strictEqual(this, context);
-      assert.strictEqual(value, 3);
-      assert.strictEqual(index, 0);
-      assert.strictEqual(array, list);
+      assert.strictEqual(this, context, 'executes its iterator in the given context');
+      assert.strictEqual(value, 3, 'passes its iterator the value');
+      assert.strictEqual(index, 0, 'passes its iterator the index');
+      assert.strictEqual(array, list, 'passes its iterator the entire array');
     }, context);
 
-    assert.deepEqual(_.uniq([{a: 1, b: 1}, {a: 1, b: 2}, {a: 1, b: 3}, {a: 2, b: 1}], 'a'), [{a: 1, b: 1}, {a: 2, b: 1}], 'can use pluck like iterator');
-    assert.deepEqual(_.uniq([{0: 1, b: 1}, {0: 1, b: 2}, {0: 1, b: 3}, {0: 2, b: 1}], 0), [{0: 1, b: 1}, {0: 2, b: 1}], 'can use falsey pluck like iterator');
   });
 
   QUnit.test('unique', function(assert) {
@@ -198,44 +194,54 @@
 
   QUnit.test('intersection', function(assert) {
     var stooges = ['moe', 'curly', 'larry'], leaders = ['moe', 'groucho'];
-    assert.deepEqual(_.intersection(stooges, leaders), ['moe'], 'can take the set intersection of two arrays');
+    assert.deepEqual(_.intersection(stooges, leaders), ['moe'], 'can find the set intersection of two arrays');
     assert.deepEqual(_(stooges).intersection(leaders), ['moe'], 'can perform an OO-style intersection');
     var result = (function(){ return _.intersection(arguments, leaders); }('moe', 'curly', 'larry'));
     assert.deepEqual(result, ['moe'], 'works on an arguments object');
     var theSixStooges = ['moe', 'moe', 'curly', 'curly', 'larry', 'larry'];
     assert.deepEqual(_.intersection(theSixStooges, leaders), ['moe'], 'returns a duplicate-free array');
     result = _.intersection([2, 4, 3, 1], [1, 2, 3]);
-    assert.deepEqual(result, [2, 3, 1], 'preserves order of first array');
+    assert.deepEqual(result, [2, 3, 1], 'preserves the order of the first array');
     result = _.intersection(null, [1, 2, 3]);
-    assert.equal(Object.prototype.toString.call(result), '[object Array]', 'returns an empty array when passed null as first argument');
-    assert.equal(result.length, 0, 'returns an empty array when passed null as first argument');
+    assert.deepEqual(result, [], 'returns an empty array when passed null as the first argument');
     result = _.intersection([1, 2, 3], null);
-    assert.equal(Object.prototype.toString.call(result), '[object Array]', 'returns an empty array when passed null as argument beyond the first');
-    assert.equal(result.length, 0, 'returns an empty array when passed null as argument beyond the first');
+    assert.deepEqual(result, [], 'returns an empty array when passed null as an argument beyond the first');
   });
 
   QUnit.test('union', function(assert) {
     var result = _.union([1, 2, 3], [2, 30, 1], [1, 40]);
-    assert.deepEqual(result, [1, 2, 3, 30, 40], 'takes the union of a list of arrays');
+    assert.deepEqual(result, [1, 2, 3, 30, 40], 'can find the union of a list of arrays');
+
+    result = _([1, 2, 3]).union([2, 30, 1], [1, 40]);
+    assert.deepEqual(result, [1, 2, 3, 30, 40], 'can perform an OO-style union');
 
     result = _.union([1, 2, 3], [2, 30, 1], [1, 40, [1]]);
-    assert.deepEqual(result, [1, 2, 3, 30, 40, [1]], 'takes the union of a list of nested arrays');
+    assert.deepEqual(result, [1, 2, 3, 30, 40, [1]], 'can find the union of a list of nested arrays');
 
-    var args = null;
-    (function(){ args = arguments; }(1, 2, 3));
-    result = _.union(args, [2, 30, 1], [1, 40]);
-    assert.deepEqual(result, [1, 2, 3, 30, 40], 'takes the union of a list of arrays');
+    result = _.union([10, 20], [1, 30, 10], [0, 40]);
+    assert.deepEqual(result, [10, 20, 1, 30, 0, 40], 'orders values by their first encounter');
 
-    result = _.union([1, 2, 3], 4);
-    assert.deepEqual(result, [1, 2, 3], 'restrict the union to arrays only');
+    result = (function(){ return _.union(arguments, [2, 30, 1], [1, 40]); }(1, 2, 3));
+    assert.deepEqual(result, [1, 2, 3, 30, 40], 'works on an arguments object');
+
+    assert.deepEqual(_.union([1, 2, 3], 4), [1, 2, 3], 'restricts the union to arrays only');
   });
 
   QUnit.test('difference', function(assert) {
     var result = _.difference([1, 2, 3], [2, 30, 40]);
-    assert.deepEqual(result, [1, 3], 'takes the difference of two arrays');
+    assert.deepEqual(result, [1, 3], 'can find the difference of two arrays');
+
+    result = _([1, 2, 3]).difference([2, 30, 40]);
+    assert.deepEqual(result, [1, 3], 'can perform an OO-style difference');
 
     result = _.difference([1, 2, 3, 4], [2, 30, 40], [1, 11, 111]);
-    assert.deepEqual(result, [3, 4], 'takes the difference of three arrays');
+    assert.deepEqual(result, [3, 4], 'can find the difference of three arrays');
+
+    result = _.difference([8, 9, 3, 1], [3, 8]);
+    assert.deepEqual(result, [9, 1], 'preserves the order of the first array');
+
+    result = (function(){ return _.difference(arguments, [2, 30, 40]); }(1, 2, 3));
+    assert.deepEqual(result, [1, 3], 'works on an arguments object');
 
     result = _.difference([1, 2, 3], 1);
     assert.deepEqual(result, [1, 2, 3], 'restrict the difference to arrays only');

vendor/underscore/test/collections.js

@@ -188,7 +188,7 @@
     var prod = _.reduce([1, 2, 3, 4], function(memo, num){ return memo * num; });
     assert.equal(prod, 24, 'can reduce via multiplication');
 
-    assert.ok(_.reduce(null, _.noop, 138) === 138, 'handles a null (with initial value) properly');
+    assert.strictEqual(_.reduce(null, _.noop, 138), 138, 'handles a null (with initial value) properly');
     assert.equal(_.reduce([], _.noop, void 0), void 0, 'undefined can be passed as a special case');
     assert.equal(_.reduce([_], _.noop), _, 'collection of length one with no initial value returns the first item');
     assert.equal(_.reduce([], _.noop), void 0, 'returns undefined when collection is empty and no initial value');
@@ -212,7 +212,7 @@
     var sum = _.reduceRight({a: 1, b: 2, c: 3}, function(memo, num){ return memo + num; });
     assert.equal(sum, 6, 'default initial value on object');
 
-    assert.ok(_.reduceRight(null, _.noop, 138) === 138, 'handles a null (with initial value) properly');
+    assert.strictEqual(_.reduceRight(null, _.noop, 138), 138, 'handles a null (with initial value) properly');
     assert.equal(_.reduceRight([_], _.noop), _, 'collection of length one with no initial value returns the first item');
 
     assert.equal(_.reduceRight([], _.noop, void 0), void 0, 'undefined can be passed as a special case');
@@ -268,8 +268,8 @@
     var list = [{a: 1, b: 2}, {a: 2, b: 2}, {a: 1, b: 3}, {a: 1, b: 4}, {a: 2, b: 4}];
     assert.deepEqual(_.find(list, {a: 1}), {a: 1, b: 2}, 'can be used as findWhere');
     assert.deepEqual(_.find(list, {b: 4}), {a: 1, b: 4});
-    assert.ok(!_.find(list, {c: 1}), 'undefined when not found');
-    assert.ok(!_.find([], {c: 1}), 'undefined when searching empty list');
+    assert.notOk(_.find(list, {c: 1}), 'undefined when not found');
+    assert.notOk(_.find([], {c: 1}), 'undefined when searching empty list');
 
     var result = _.find([1, 2, 3], function(num){ return num * 2 === 4; });
     assert.equal(result, 2, 'found the first "2" and broke the loop');
@@ -348,25 +348,25 @@
   QUnit.test('every', function(assert) {
     assert.ok(_.every([], _.identity), 'the empty set');
     assert.ok(_.every([true, true, true], _.identity), 'every true values');
-    assert.ok(!_.every([true, false, true], _.identity), 'one false value');
+    assert.notOk(_.every([true, false, true], _.identity), 'one false value');
     assert.ok(_.every([0, 10, 28], function(num){ return num % 2 === 0; }), 'even numbers');
-    assert.ok(!_.every([0, 11, 28], function(num){ return num % 2 === 0; }), 'an odd number');
-    assert.ok(_.every([1], _.identity) === true, 'cast to boolean - true');
-    assert.ok(_.every([0], _.identity) === false, 'cast to boolean - false');
-    assert.ok(!_.every([void 0, void 0, void 0], _.identity), 'works with arrays of undefined');
+    assert.notOk(_.every([0, 11, 28], function(num){ return num % 2 === 0; }), 'an odd number');
+    assert.strictEqual(_.every([1], _.identity), true, 'cast to boolean - true');
+    assert.strictEqual(_.every([0], _.identity), false, 'cast to boolean - false');
+    assert.notOk(_.every([void 0, void 0, void 0], _.identity), 'works with arrays of undefined');
 
     var list = [{a: 1, b: 2}, {a: 2, b: 2}, {a: 1, b: 3}, {a: 1, b: 4}];
-    assert.ok(!_.every(list, {a: 1, b: 2}), 'Can be called with object');
+    assert.notOk(_.every(list, {a: 1, b: 2}), 'Can be called with object');
     assert.ok(_.every(list, 'a'), 'String mapped to object property');
 
     list = [{a: 1, b: 2}, {a: 2, b: 2, c: true}];
     assert.ok(_.every(list, {b: 2}), 'Can be called with object');
-    assert.ok(!_.every(list, 'c'), 'String mapped to object property');
+    assert.notOk(_.every(list, 'c'), 'String mapped to object property');
 
     assert.ok(_.every({a: 1, b: 2, c: 3, d: 4}, _.isNumber), 'takes objects');
-    assert.ok(!_.every({a: 1, b: 2, c: 3, d: 4}, _.isObject), 'takes objects');
+    assert.notOk(_.every({a: 1, b: 2, c: 3, d: 4}, _.isObject), 'takes objects');
     assert.ok(_.every(['a', 'b', 'c', 'd'], _.hasOwnProperty, {a: 1, b: 2, c: 3, d: 4}), 'context works');
-    assert.ok(!_.every(['a', 'b', 'c', 'd', 'f'], _.hasOwnProperty, {a: 1, b: 2, c: 3, d: 4}), 'context works');
+    assert.notOk(_.every(['a', 'b', 'c', 'd', 'f'], _.hasOwnProperty, {a: 1, b: 2, c: 3, d: 4}), 'context works');
   });
 
   QUnit.test('all', function(assert) {
@@ -374,29 +374,29 @@
   });
 
   QUnit.test('some', function(assert) {
-    assert.ok(!_.some([]), 'the empty set');
-    assert.ok(!_.some([false, false, false]), 'all false values');
+    assert.notOk(_.some([]), 'the empty set');
+    assert.notOk(_.some([false, false, false]), 'all false values');
     assert.ok(_.some([false, false, true]), 'one true value');
     assert.ok(_.some([null, 0, 'yes', false]), 'a string');
-    assert.ok(!_.some([null, 0, '', false]), 'falsy values');
-    assert.ok(!_.some([1, 11, 29], function(num){ return num % 2 === 0; }), 'all odd numbers');
+    assert.notOk(_.some([null, 0, '', false]), 'falsy values');
+    assert.notOk(_.some([1, 11, 29], function(num){ return num % 2 === 0; }), 'all odd numbers');
     assert.ok(_.some([1, 10, 29], function(num){ return num % 2 === 0; }), 'an even number');
-    assert.ok(_.some([1], _.identity) === true, 'cast to boolean - true');
-    assert.ok(_.some([0], _.identity) === false, 'cast to boolean - false');
+    assert.strictEqual(_.some([1], _.identity), true, 'cast to boolean - true');
+    assert.strictEqual(_.some([0], _.identity), false, 'cast to boolean - false');
     assert.ok(_.some([false, false, true]));
 
     var list = [{a: 1, b: 2}, {a: 2, b: 2}, {a: 1, b: 3}, {a: 1, b: 4}];
-    assert.ok(!_.some(list, {a: 5, b: 2}), 'Can be called with object');
+    assert.notOk(_.some(list, {a: 5, b: 2}), 'Can be called with object');
     assert.ok(_.some(list, 'a'), 'String mapped to object property');
 
     list = [{a: 1, b: 2}, {a: 2, b: 2, c: true}];
     assert.ok(_.some(list, {b: 2}), 'Can be called with object');
-    assert.ok(!_.some(list, 'd'), 'String mapped to object property');
+    assert.notOk(_.some(list, 'd'), 'String mapped to object property');
 
     assert.ok(_.some({a: '1', b: '2', c: '3', d: '4', e: 6}, _.isNumber), 'takes objects');
-    assert.ok(!_.some({a: 1, b: 2, c: 3, d: 4}, _.isObject), 'takes objects');
+    assert.notOk(_.some({a: 1, b: 2, c: 3, d: 4}, _.isObject), 'takes objects');
     assert.ok(_.some(['a', 'b', 'c', 'd'], _.hasOwnProperty, {a: 1, b: 2, c: 3, d: 4}), 'context works');
-    assert.ok(!_.some(['x', 'y', 'z'], _.hasOwnProperty, {a: 1, b: 2, c: 3, d: 4}), 'context works');
+    assert.notOk(_.some(['x', 'y', 'z'], _.hasOwnProperty, {a: 1, b: 2, c: 3, d: 4}), 'context works');
   });
 
   QUnit.test('any', function(assert) {
@@ -408,11 +408,11 @@
       assert.strictEqual(_.includes(val, 'hasOwnProperty'), false);
     });
     assert.strictEqual(_.includes([1, 2, 3], 2), true, 'two is in the array');
-    assert.ok(!_.includes([1, 3, 9], 2), 'two is not in the array');
+    assert.notOk(_.includes([1, 3, 9], 2), 'two is not in the array');
 
     assert.strictEqual(_.includes([5, 4, 3, 2, 1], 5, true), true, 'doesn\'t delegate to binary search');
 
-    assert.ok(_.includes({moe: 1, larry: 3, curly: 9}, 3) === true, '_.includes on objects checks their values');
+    assert.strictEqual(_.includes({moe: 1, larry: 3, curly: 9}, 3), true, '_.includes on objects checks their values');
     assert.ok(_([1, 2, 3]).includes(2), 'OO-style includes');
 
     var numbers = [1, 2, 3, 1, 2, 3, 1, 2, 3];
@@ -549,7 +549,7 @@
     assert.equal(-Infinity, _.max(void 0), 'can handle null/undefined');
     assert.equal(-Infinity, _.max(null, _.identity), 'can handle null/undefined');
 
-    assert.equal(3, _.max([1, 2, 3]), 'can perform a regular Math.max');
+    assert.equal(_.max([1, 2, 3]), 3, 'can perform a regular Math.max');
 
     var neg = _.max([1, 2, 3], function(num){ return -num; });
     assert.equal(neg, 1, 'can perform a computation-based max');
@@ -558,24 +558,24 @@
     assert.equal(-Infinity, _.max([]), 'Maximum value of an empty array');
     assert.equal(_.max({a: 'a'}), -Infinity, 'Maximum value of a non-numeric collection');
 
-    assert.equal(299999, _.max(_.range(1, 300000)), 'Maximum value of a too-big array');
+    assert.equal(_.max(_.range(1, 300000)), 299999, 'Maximum value of a too-big array');
 
-    assert.equal(3, _.max([1, 2, 3, 'test']), 'Finds correct max in array starting with num and containing a NaN');
-    assert.equal(3, _.max(['test', 1, 2, 3]), 'Finds correct max in array starting with NaN');
+    assert.equal(_.max([1, 2, 3, 'test']), 3, 'Finds correct max in array starting with num and containing a NaN');
+    assert.equal(_.max(['test', 1, 2, 3]), 3, 'Finds correct max in array starting with NaN');
 
-    assert.equal(3, _.max([1, 2, 3, null]), 'Finds correct max in array starting with num and containing a `null`');
-    assert.equal(3, _.max([null, 1, 2, 3]), 'Finds correct max in array starting with a `null`');
+    assert.equal(_.max([1, 2, 3, null]), 3, 'Finds correct max in array starting with num and containing a `null`');
+    assert.equal(_.max([null, 1, 2, 3]), 3, 'Finds correct max in array starting with a `null`');
 
-    assert.equal(3, _.max([1, 2, 3, '']), 'Finds correct max in array starting with num and containing an empty string');
-    assert.equal(3, _.max(['', 1, 2, 3]), 'Finds correct max in array starting with an empty string');
+    assert.equal(_.max([1, 2, 3, '']), 3, 'Finds correct max in array starting with num and containing an empty string');
+    assert.equal(_.max(['', 1, 2, 3]), 3, 'Finds correct max in array starting with an empty string');
 
-    assert.equal(3, _.max([1, 2, 3, false]), 'Finds correct max in array starting with num and containing a false');
-    assert.equal(3, _.max([false, 1, 2, 3]), 'Finds correct max in array starting with a false');
+    assert.equal(_.max([1, 2, 3, false]), 3, 'Finds correct max in array starting with num and containing a false');
+    assert.equal(_.max([false, 1, 2, 3]), 3, 'Finds correct max in array starting with a false');
 
-    assert.equal(4, _.max([0, 1, 2, 3, 4]), 'Finds correct max in array containing a zero');
-    assert.equal(0, _.max([-3, -2, -1, 0]), 'Finds correct max in array containing negative numbers');
+    assert.equal(_.max([0, 1, 2, 3, 4]), 4, 'Finds correct max in array containing a zero');
+    assert.equal(_.max([-3, -2, -1, 0]), 0, 'Finds correct max in array containing negative numbers');
 
-    assert.deepEqual([3, 6], _.map([[1, 2, 3], [4, 5, 6]], _.max), 'Finds correct max in array when mapping through multiple arrays');
+    assert.deepEqual(_.map([[1, 2, 3], [4, 5, 6]], _.max), [3, 6], 'Finds correct max in array when mapping through multiple arrays');
 
     var a = {x: -Infinity};
     var b = {x: -Infinity};
@@ -590,35 +590,35 @@
   });
 
   QUnit.test('min', function(assert) {
-    assert.equal(Infinity, _.min(null), 'can handle null/undefined');
-    assert.equal(Infinity, _.min(void 0), 'can handle null/undefined');
-    assert.equal(Infinity, _.min(null, _.identity), 'can handle null/undefined');
+    assert.equal(_.min(null), Infinity, 'can handle null/undefined');
+    assert.equal(_.min(void 0), Infinity, 'can handle null/undefined');
+    assert.equal(_.min(null, _.identity), Infinity, 'can handle null/undefined');
 
-    assert.equal(1, _.min([1, 2, 3]), 'can perform a regular Math.min');
+    assert.equal(_.min([1, 2, 3]), 1, 'can perform a regular Math.min');
 
     var neg = _.min([1, 2, 3], function(num){ return -num; });
     assert.equal(neg, 3, 'can perform a computation-based min');
 
-    assert.equal(Infinity, _.min({}), 'Minimum value of an empty object');
-    assert.equal(Infinity, _.min([]), 'Minimum value of an empty array');
+    assert.equal(_.min({}), Infinity, 'Minimum value of an empty object');
+    assert.equal(_.min([]), Infinity, 'Minimum value of an empty array');
     assert.equal(_.min({a: 'a'}), Infinity, 'Minimum value of a non-numeric collection');
 
-    assert.deepEqual([1, 4], _.map([[1, 2, 3], [4, 5, 6]], _.min), 'Finds correct min in array when mapping through multiple arrays');
+    assert.deepEqual(_.map([[1, 2, 3], [4, 5, 6]], _.min), [1, 4], 'Finds correct min in array when mapping through multiple arrays');
 
     var now = new Date(9999999999);
     var then = new Date(0);
     assert.equal(_.min([now, then]), then);
 
-    assert.equal(1, _.min(_.range(1, 300000)), 'Minimum value of a too-big array');
+    assert.equal(_.min(_.range(1, 300000)), 1, 'Minimum value of a too-big array');
 
-    assert.equal(1, _.min([1, 2, 3, 'test']), 'Finds correct min in array starting with num and containing a NaN');
-    assert.equal(1, _.min(['test', 1, 2, 3]), 'Finds correct min in array starting with NaN');
+    assert.equal(_.min([1, 2, 3, 'test']), 1, 'Finds correct min in array starting with num and containing a NaN');
+    assert.equal(_.min(['test', 1, 2, 3]), 1, 'Finds correct min in array starting with NaN');
 
-    assert.equal(1, _.min([1, 2, 3, null]), 'Finds correct min in array starting with num and containing a `null`');
-    assert.equal(1, _.min([null, 1, 2, 3]), 'Finds correct min in array starting with a `null`');
+    assert.equal(_.min([1, 2, 3, null]), 1, 'Finds correct min in array starting with num and containing a `null`');
+    assert.equal(_.min([null, 1, 2, 3]), 1, 'Finds correct min in array starting with a `null`');
 
-    assert.equal(0, _.min([0, 1, 2, 3, 4]), 'Finds correct min in array containing a zero');
-    assert.equal(-3, _.min([-3, -2, -1, 0]), 'Finds correct min in array containing negative numbers');
+    assert.equal(_.min([0, 1, 2, 3, 4]), 0, 'Finds correct min in array containing a zero');
+    assert.equal(_.min([-3, -2, -1, 0]), -3, 'Finds correct min in array containing negative numbers');
 
     var a = {x: Infinity};
     var b = {x: Infinity};
@@ -692,7 +692,7 @@
     assert.deepEqual(grouped['5'], ['three', 'seven', 'eight']);
 
     var context = {};
-    _.groupBy([{}], function(){ assert.ok(this === context); }, context);
+    _.groupBy([{}], function(){ assert.strictEqual(this, context); }, context);
 
     grouped = _.groupBy([4.2, 6.1, 6.4], function(num) {
       return Math.floor(num) > 4 ? 'hasOwnProperty' : 'constructor';
@@ -701,7 +701,7 @@
     assert.equal(grouped.hasOwnProperty.length, 2);
 
     var array = [{}];
-    _.groupBy(array, function(value, index, obj){ assert.ok(obj === array); });
+    _.groupBy(array, function(value, index, obj){ assert.strictEqual(obj, array); });
 
     array = [1, 2, 1, 2, 3];
     grouped = _.groupBy(array);
@@ -747,7 +747,7 @@
     assert.equal(grouped['5'], 3);
 
     var context = {};
-    _.countBy([{}], function(){ assert.ok(this === context); }, context);
+    _.countBy([{}], function(){ assert.strictEqual(this, context); }, context);
 
     grouped = _.countBy([4.2, 6.1, 6.4], function(num) {
       return Math.floor(num) > 4 ? 'hasOwnProperty' : 'constructor';
@@ -756,7 +756,7 @@
     assert.equal(grouped.hasOwnProperty, 2);
 
     var array = [{}];
-    _.countBy(array, function(value, index, obj){ assert.ok(obj === array); });
+    _.countBy(array, function(value, index, obj){ assert.strictEqual(obj, array); });
 
     array = [1, 2, 1, 2, 3];
     grouped = _.countBy(array);
@@ -797,10 +797,10 @@
   });
 
   QUnit.test('toArray', function(assert) {
-    assert.ok(!_.isArray(arguments), 'arguments object is not an array');
+    assert.notOk(_.isArray(arguments), 'arguments object is not an array');
     assert.ok(_.isArray(_.toArray(arguments)), 'arguments object converted into array');
     var a = [1, 2, 3];
-    assert.ok(_.toArray(a) !== a, 'array is cloned');
+    assert.notStrictEqual(_.toArray(a), a, 'array is cloned');
     assert.deepEqual(_.toArray(a), [1, 2, 3], 'cloned array contains same elements');
 
     var numbers = _.toArray({one: 1, two: 2, three: 3});
@@ -882,7 +882,7 @@
       assert.deepEqual(_.map(elementChildren, 'id'), ['id1', 'id2']);
       assert.deepEqual(_.map(parent.childNodes, 'nodeType'), [1, 3, 1]);
 
-      assert.ok(!_.every(parent.childNodes, _.isElement));
+      assert.notOk(_.every(parent.childNodes, _.isElement));
       assert.ok(_.some(parent.childNodes, _.isElement));
 
       function compareNode(node) {

vendor/underscore/test/cross-document.js

@@ -35,7 +35,7 @@
 
   QUnit.test('isEqual', function(assert) {
 
-    assert.ok(!_.isEqual(iNumber, 101));
+    assert.notOk(_.isEqual(iNumber, 101));
     assert.ok(_.isEqual(iNumber, 100));
 
     // Objects from another frame.
@@ -46,13 +46,13 @@
   });
 
   QUnit.test('isEmpty', function(assert) {
-    assert.ok(!_([iNumber]).isEmpty(), '[1] is not empty');
-    assert.ok(!_.isEmpty(iArray), '[] is empty');
+    assert.notOk(_([iNumber]).isEmpty(), '[1] is not empty');
+    assert.notOk(_.isEmpty(iArray), '[] is empty');
     assert.ok(_.isEmpty(iObject), '{} is empty');
   });
 
   QUnit.test('isElement', function(assert) {
-    assert.ok(!_.isElement('div'), 'strings are not dom elements');
+    assert.notOk(_.isElement('div'), 'strings are not dom elements');
     assert.ok(_.isElement(document.body), 'the body tag is a DOM element');
     assert.ok(_.isElement(iElement), 'even from another frame');
   });
@@ -113,12 +113,12 @@
   if (typeof ActiveXObject != 'undefined') {
     QUnit.test('IE host objects', function(assert) {
       var xml = new ActiveXObject('Msxml2.DOMDocument.3.0');
-      assert.ok(!_.isNumber(xml));
-      assert.ok(!_.isBoolean(xml));
-      assert.ok(!_.isNaN(xml));
-      assert.ok(!_.isFunction(xml));
-      assert.ok(!_.isNull(xml));
-      assert.ok(!_.isUndefined(xml));
+      assert.notOk(_.isNumber(xml));
+      assert.notOk(_.isBoolean(xml));
+      assert.notOk(_.isNaN(xml));
+      assert.notOk(_.isFunction(xml));
+      assert.notOk(_.isNull(xml));
+      assert.notOk(_.isUndefined(xml));
     });
 
     QUnit.test('#1621 IE 11 compat mode DOM elements are not functions', function(assert) {

vendor/underscore/test/functions.js

@@ -180,7 +180,7 @@
     var done = assert.async();
     var delayed = false;
     _.delay(function(){ delayed = true; }, 100);
-    setTimeout(function(){ assert.ok(!delayed, "didn't delay the function quite yet"); }, 50);
+    setTimeout(function(){ assert.notOk(delayed, "didn't delay the function quite yet"); }, 50);
     setTimeout(function(){ assert.ok(delayed, 'delayed the function'); done(); }, 150);
   });
 
@@ -475,9 +475,9 @@
   });
 
   QUnit.test('debounce asap', function(assert) {
-    assert.expect(4);
+    assert.expect(6);
     var done = assert.async();
-    var a, b;
+    var a, b, c;
     var counter = 0;
     var incr = function(){ return ++counter; };
     var debouncedIncr = _.debounce(incr, 64, true);
@@ -489,7 +489,13 @@
     _.delay(debouncedIncr, 16);
     _.delay(debouncedIncr, 32);
     _.delay(debouncedIncr, 48);
-    _.delay(function(){ assert.equal(counter, 1, 'incr was debounced'); done(); }, 128);
+    _.delay(function(){
+      assert.equal(counter, 1, 'incr was debounced');
+      c = debouncedIncr();
+      assert.equal(c, 2);
+      assert.equal(counter, 2, 'incr was called again');
+      done();
+    }, 128);
   });
 
   QUnit.test('debounce asap cancel', function(assert) {
@@ -688,6 +694,43 @@
       assert.deepEqual(_.toArray(cb(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)), _.range(1, 11));
     });
 
+    // Test custom iteratee
+    var builtinIteratee = _.iteratee;
+    _.iteratee = function(value) {
+      // RegEx values return a function that returns the number of matches
+      if (_.isRegExp(value)) return function(obj) {
+        return (obj.match(value) || []).length;
+      };
+      return value;
+    };
+
+    var collection = ['foo', 'bar', 'bbiz'];
+
+    // Test all methods that claim to be transformed through `_.iteratee`
+    assert.deepEqual(_.countBy(collection, /b/g), {0: 1, 1: 1, 2: 1});
+    assert.equal(_.every(collection, /b/g), false);
+    assert.deepEqual(_.filter(collection, /b/g), ['bar', 'bbiz']);
+    assert.equal(_.find(collection, /b/g), 'bar');
+    assert.equal(_.findIndex(collection, /b/g), 1);
+    assert.equal(_.findKey(collection, /b/g), 1);
+    assert.equal(_.findLastIndex(collection, /b/g), 2);
+    assert.deepEqual(_.groupBy(collection, /b/g), {0: ['foo'], 1: ['bar'], 2: ['bbiz']});
+    assert.deepEqual(_.indexBy(collection, /b/g), {0: 'foo', 1: 'bar', 2: 'bbiz'});
+    assert.deepEqual(_.map(collection, /b/g), [0, 1, 2]);
+    assert.equal(_.max(collection, /b/g), 'bbiz');
+    assert.equal(_.min(collection, /b/g), 'foo');
+    assert.deepEqual(_.partition(collection, /b/g), [['bar', 'bbiz'], ['foo']]);
+    assert.deepEqual(_.reject(collection, /b/g), ['foo']);
+    assert.equal(_.some(collection, /b/g), true);
+    assert.deepEqual(_.sortBy(collection, /b/g), ['foo', 'bar', 'bbiz']);
+    assert.equal(_.sortedIndex(collection, 'blah', /b/g), 1);
+    assert.deepEqual(_.uniq(collection, /b/g), ['foo', 'bar', 'bbiz']);
+
+    var objCollection = {a: 'foo', b: 'bar', c: 'bbiz'};
+    assert.deepEqual(_.mapObject(objCollection, /b/g), {a: 0, b: 1, c: 2});
+
+    // Restore the builtin iteratee
+    _.iteratee = builtinIteratee;
   });
 
   QUnit.test('restArgs', function(assert) {

vendor/underscore/test/objects.js

@@ -123,7 +123,7 @@
     subObj.c = 'd';
     assert.deepEqual(_.extend({}, subObj), {a: 'b', c: 'd'}, 'extend copies all properties from source');
     _.extend(subObj, {});
-    assert.ok(!subObj.hasOwnProperty('a'), "extend does not convert destination object's 'in' properties to 'own' properties");
+    assert.notOk(subObj.hasOwnProperty('a'), "extend does not convert destination object's 'in' properties to 'own' properties");
 
     try {
       result = {};
@@ -205,7 +205,7 @@
       return this[key] === 3 && this === instance;
     }, instance), {c: 3}, 'function is given context');
 
-    assert.ok(!_.has(_.pick({}, 'foo'), 'foo'), 'does not set own property if property not in object');
+    assert.notOk(_.has(_.pick({}, 'foo'), 'foo'), 'does not set own property if property not in object');
     _.pick(data, function(value, key, obj) {
       assert.equal(obj, data, 'passes same object as third parameter of iteratee');
     });
@@ -309,7 +309,7 @@
 
     Child.prototype.foo = 'foo';
     var created = _.create(Child.prototype, new Child);
-    assert.ok(!created.hasOwnProperty('foo'), 'should only add own properties');
+    assert.notOk(created.hasOwnProperty('foo'), 'should only add own properties');
   });
 
   QUnit.test('isEqual', function(assert) {
@@ -326,10 +326,10 @@
     assert.ok(_.isEqual(null, null), '`null` is equal to `null`');
     assert.ok(_.isEqual(), '`undefined` is equal to `undefined`');
 
-    assert.ok(!_.isEqual(0, -0), '`0` is not equal to `-0`');
-    assert.ok(!_.isEqual(-0, 0), 'Commutative equality is implemented for `0` and `-0`');
-    assert.ok(!_.isEqual(null, void 0), '`null` is not equal to `undefined`');
-    assert.ok(!_.isEqual(void 0, null), 'Commutative equality is implemented for `null` and `undefined`');
+    assert.notOk(_.isEqual(0, -0), '`0` is not equal to `-0`');
+    assert.notOk(_.isEqual(-0, 0), 'Commutative equality is implemented for `0` and `-0`');
+    assert.notOk(_.isEqual(null, void 0), '`null` is not equal to `undefined`');
+    assert.notOk(_.isEqual(void 0, null), 'Commutative equality is implemented for `null` and `undefined`');
 
     // String object and primitive comparisons.
     assert.ok(_.isEqual('Curly', 'Curly'), 'Identical string primitives are equal');
@@ -337,76 +337,76 @@
     assert.ok(_.isEqual(new String('Curly'), 'Curly'), 'String primitives and their corresponding object wrappers are equal');
     assert.ok(_.isEqual('Curly', new String('Curly')), 'Commutative equality is implemented for string objects and primitives');
 
-    assert.ok(!_.isEqual('Curly', 'Larry'), 'String primitives with different values are not equal');
-    assert.ok(!_.isEqual(new String('Curly'), new String('Larry')), 'String objects with different primitive values are not equal');
-    assert.ok(!_.isEqual(new String('Curly'), {toString: function(){ return 'Curly'; }}), 'String objects and objects with a custom `toString` method are not equal');
+    assert.notOk(_.isEqual('Curly', 'Larry'), 'String primitives with different values are not equal');
+    assert.notOk(_.isEqual(new String('Curly'), new String('Larry')), 'String objects with different primitive values are not equal');
+    assert.notOk(_.isEqual(new String('Curly'), {toString: function(){ return 'Curly'; }}), 'String objects and objects with a custom `toString` method are not equal');
 
     // Number object and primitive comparisons.
     assert.ok(_.isEqual(75, 75), 'Identical number primitives are equal');
     assert.ok(_.isEqual(new Number(75), new Number(75)), 'Number objects with identical primitive values are equal');
     assert.ok(_.isEqual(75, new Number(75)), 'Number primitives and their corresponding object wrappers are equal');
     assert.ok(_.isEqual(new Number(75), 75), 'Commutative equality is implemented for number objects and primitives');
-    assert.ok(!_.isEqual(new Number(0), -0), '`new Number(0)` and `-0` are not equal');
-    assert.ok(!_.isEqual(0, new Number(-0)), 'Commutative equality is implemented for `new Number(0)` and `-0`');
+    assert.notOk(_.isEqual(new Number(0), -0), '`new Number(0)` and `-0` are not equal');
+    assert.notOk(_.isEqual(0, new Number(-0)), 'Commutative equality is implemented for `new Number(0)` and `-0`');
 
-    assert.ok(!_.isEqual(new Number(75), new Number(63)), 'Number objects with different primitive values are not equal');
-    assert.ok(!_.isEqual(new Number(63), {valueOf: function(){ return 63; }}), 'Number objects and objects with a `valueOf` method are not equal');
+    assert.notOk(_.isEqual(new Number(75), new Number(63)), 'Number objects with different primitive values are not equal');
+    assert.notOk(_.isEqual(new Number(63), {valueOf: function(){ return 63; }}), 'Number objects and objects with a `valueOf` method are not equal');
 
     // Comparisons involving `NaN`.
     assert.ok(_.isEqual(NaN, NaN), '`NaN` is equal to `NaN`');
     assert.ok(_.isEqual(new Number(NaN), NaN), 'Object(`NaN`) is equal to `NaN`');
-    assert.ok(!_.isEqual(61, NaN), 'A number primitive is not equal to `NaN`');
-    assert.ok(!_.isEqual(new Number(79), NaN), 'A number object is not equal to `NaN`');
-    assert.ok(!_.isEqual(Infinity, NaN), '`Infinity` is not equal to `NaN`');
+    assert.notOk(_.isEqual(61, NaN), 'A number primitive is not equal to `NaN`');
+    assert.notOk(_.isEqual(new Number(79), NaN), 'A number object is not equal to `NaN`');
+    assert.notOk(_.isEqual(Infinity, NaN), '`Infinity` is not equal to `NaN`');
 
     // Boolean object and primitive comparisons.
     assert.ok(_.isEqual(true, true), 'Identical boolean primitives are equal');
     assert.ok(_.isEqual(new Boolean, new Boolean), 'Boolean objects with identical primitive values are equal');
     assert.ok(_.isEqual(true, new Boolean(true)), 'Boolean primitives and their corresponding object wrappers are equal');
     assert.ok(_.isEqual(new Boolean(true), true), 'Commutative equality is implemented for booleans');
-    assert.ok(!_.isEqual(new Boolean(true), new Boolean), 'Boolean objects with different primitive values are not equal');
+    assert.notOk(_.isEqual(new Boolean(true), new Boolean), 'Boolean objects with different primitive values are not equal');
 
     // Common type coercions.
-    assert.ok(!_.isEqual(new Boolean(false), true), '`new Boolean(false)` is not equal to `true`');
-    assert.ok(!_.isEqual('75', 75), 'String and number primitives with like values are not equal');
-    assert.ok(!_.isEqual(new Number(63), new String(63)), 'String and number objects with like values are not equal');
-    assert.ok(!_.isEqual(75, '75'), 'Commutative equality is implemented for like string and number values');
-    assert.ok(!_.isEqual(0, ''), 'Number and string primitives with like values are not equal');
-    assert.ok(!_.isEqual(1, true), 'Number and boolean primitives with like values are not equal');
-    assert.ok(!_.isEqual(new Boolean(false), new Number(0)), 'Boolean and number objects with like values are not equal');
-    assert.ok(!_.isEqual(false, new String('')), 'Boolean primitives and string objects with like values are not equal');
-    assert.ok(!_.isEqual(12564504e5, new Date(2009, 9, 25)), 'Dates and their corresponding numeric primitive values are not equal');
+    assert.notOk(_.isEqual(new Boolean(false), true), '`new Boolean(false)` is not equal to `true`');
+    assert.notOk(_.isEqual('75', 75), 'String and number primitives with like values are not equal');
+    assert.notOk(_.isEqual(new Number(63), new String(63)), 'String and number objects with like values are not equal');
+    assert.notOk(_.isEqual(75, '75'), 'Commutative equality is implemented for like string and number values');
+    assert.notOk(_.isEqual(0, ''), 'Number and string primitives with like values are not equal');
+    assert.notOk(_.isEqual(1, true), 'Number and boolean primitives with like values are not equal');
+    assert.notOk(_.isEqual(new Boolean(false), new Number(0)), 'Boolean and number objects with like values are not equal');
+    assert.notOk(_.isEqual(false, new String('')), 'Boolean primitives and string objects with like values are not equal');
+    assert.notOk(_.isEqual(12564504e5, new Date(2009, 9, 25)), 'Dates and their corresponding numeric primitive values are not equal');
 
     // Dates.
     assert.ok(_.isEqual(new Date(2009, 9, 25), new Date(2009, 9, 25)), 'Date objects referencing identical times are equal');
-    assert.ok(!_.isEqual(new Date(2009, 9, 25), new Date(2009, 11, 13)), 'Date objects referencing different times are not equal');
-    assert.ok(!_.isEqual(new Date(2009, 11, 13), {
+    assert.notOk(_.isEqual(new Date(2009, 9, 25), new Date(2009, 11, 13)), 'Date objects referencing different times are not equal');
+    assert.notOk(_.isEqual(new Date(2009, 11, 13), {
       getTime: function(){
         return 12606876e5;
       }
     }), 'Date objects and objects with a `getTime` method are not equal');
-    assert.ok(!_.isEqual(new Date('Curly'), new Date('Curly')), 'Invalid dates are not equal');
+    assert.notOk(_.isEqual(new Date('Curly'), new Date('Curly')), 'Invalid dates are not equal');
 
     // Functions.
-    assert.ok(!_.isEqual(First, Second), 'Different functions with identical bodies and source code representations are not equal');
+    assert.notOk(_.isEqual(First, Second), 'Different functions with identical bodies and source code representations are not equal');
 
     // RegExps.
     assert.ok(_.isEqual(/(?:)/gim, /(?:)/gim), 'RegExps with equivalent patterns and flags are equal');
     assert.ok(_.isEqual(/(?:)/gi, /(?:)/ig), 'Flag order is not significant');
-    assert.ok(!_.isEqual(/(?:)/g, /(?:)/gi), 'RegExps with equivalent patterns and different flags are not equal');
-    assert.ok(!_.isEqual(/Moe/gim, /Curly/gim), 'RegExps with different patterns and equivalent flags are not equal');
-    assert.ok(!_.isEqual(/(?:)/gi, /(?:)/g), 'Commutative equality is implemented for RegExps');
-    assert.ok(!_.isEqual(/Curly/g, {source: 'Larry', global: true, ignoreCase: false, multiline: false}), 'RegExps and RegExp-like objects are not equal');
+    assert.notOk(_.isEqual(/(?:)/g, /(?:)/gi), 'RegExps with equivalent patterns and different flags are not equal');
+    assert.notOk(_.isEqual(/Moe/gim, /Curly/gim), 'RegExps with different patterns and equivalent flags are not equal');
+    assert.notOk(_.isEqual(/(?:)/gi, /(?:)/g), 'Commutative equality is implemented for RegExps');
+    assert.notOk(_.isEqual(/Curly/g, {source: 'Larry', global: true, ignoreCase: false, multiline: false}), 'RegExps and RegExp-like objects are not equal');
 
     // Empty arrays, array-like objects, and object literals.
     assert.ok(_.isEqual({}, {}), 'Empty object literals are equal');
     assert.ok(_.isEqual([], []), 'Empty array literals are equal');
     assert.ok(_.isEqual([{}], [{}]), 'Empty nested arrays and objects are equal');
-    assert.ok(!_.isEqual({length: 0}, []), 'Array-like objects and arrays are not equal.');
-    assert.ok(!_.isEqual([], {length: 0}), 'Commutative equality is implemented for array-like objects');
+    assert.notOk(_.isEqual({length: 0}, []), 'Array-like objects and arrays are not equal.');
+    assert.notOk(_.isEqual([], {length: 0}), 'Commutative equality is implemented for array-like objects');
 
-    assert.ok(!_.isEqual({}, []), 'Object literals and array literals are not equal');
-    assert.ok(!_.isEqual([], {}), 'Commutative equality is implemented for objects and arrays');
+    assert.notOk(_.isEqual({}, []), 'Object literals and array literals are not equal');
+    assert.notOk(_.isEqual([], {}), 'Commutative equality is implemented for objects and arrays');
 
     // Arrays with primitive and object values.
     assert.ok(_.isEqual([1, 'Larry', true], [1, 'Larry', true]), 'Arrays containing identical primitives are equal');
@@ -424,14 +424,14 @@
     // Array elements and properties.
     assert.ok(_.isEqual(a, b), 'Arrays containing equivalent elements and different non-numeric properties are equal');
     a.push('White Rocks');
-    assert.ok(!_.isEqual(a, b), 'Arrays of different lengths are not equal');
+    assert.notOk(_.isEqual(a, b), 'Arrays of different lengths are not equal');
     a.push('East Boulder');
     b.push('Gunbarrel Ranch', 'Teller Farm');
-    assert.ok(!_.isEqual(a, b), 'Arrays of identical lengths containing different elements are not equal');
+    assert.notOk(_.isEqual(a, b), 'Arrays of identical lengths containing different elements are not equal');
 
     // Sparse arrays.
     assert.ok(_.isEqual(Array(3), Array(3)), 'Sparse arrays of identical lengths are equal');
-    assert.ok(!_.isEqual(Array(3), Array(6)), 'Sparse arrays of different lengths are not equal when both are empty');
+    assert.notOk(_.isEqual(Array(3), Array(6)), 'Sparse arrays of different lengths are not equal when both are empty');
 
     var sparse = [];
     sparse[1] = 5;
@@ -440,11 +440,11 @@
     // Simple objects.
     assert.ok(_.isEqual({a: 'Curly', b: 1, c: true}, {a: 'Curly', b: 1, c: true}), 'Objects containing identical primitives are equal');
     assert.ok(_.isEqual({a: /Curly/g, b: new Date(2009, 11, 13)}, {a: /Curly/g, b: new Date(2009, 11, 13)}), 'Objects containing equivalent members are equal');
-    assert.ok(!_.isEqual({a: 63, b: 75}, {a: 61, b: 55}), 'Objects of identical sizes with different values are not equal');
-    assert.ok(!_.isEqual({a: 63, b: 75}, {a: 61, c: 55}), 'Objects of identical sizes with different property names are not equal');
-    assert.ok(!_.isEqual({a: 1, b: 2}, {a: 1}), 'Objects of different sizes are not equal');
-    assert.ok(!_.isEqual({a: 1}, {a: 1, b: 2}), 'Commutative equality is implemented for objects');
-    assert.ok(!_.isEqual({x: 1, y: void 0}, {x: 1, z: 2}), 'Objects with identical keys and different values are not equivalent');
+    assert.notOk(_.isEqual({a: 63, b: 75}, {a: 61, b: 55}), 'Objects of identical sizes with different values are not equal');
+    assert.notOk(_.isEqual({a: 63, b: 75}, {a: 61, c: 55}), 'Objects of identical sizes with different property names are not equal');
+    assert.notOk(_.isEqual({a: 1, b: 2}, {a: 1}), 'Objects of different sizes are not equal');
+    assert.notOk(_.isEqual({a: 1}, {a: 1, b: 2}), 'Commutative equality is implemented for objects');
+    assert.notOk(_.isEqual({x: 1, y: void 0}, {x: 1, z: 2}), 'Objects with identical keys and different values are not equivalent');
 
     // `A` contains nested objects and arrays.
     a = {
@@ -479,9 +479,9 @@
 
     // Instances.
     assert.ok(_.isEqual(new First, new First), 'Object instances are equal');
-    assert.ok(!_.isEqual(new First, new Second), 'Objects with different constructors and identical own properties are not equal');
-    assert.ok(!_.isEqual({value: 1}, new First), 'Object instances and objects sharing equivalent properties are not equal');
-    assert.ok(!_.isEqual({value: 2}, new Second), 'The prototype chain of objects should not be examined');
+    assert.notOk(_.isEqual(new First, new Second), 'Objects with different constructors and identical own properties are not equal');
+    assert.notOk(_.isEqual({value: 1}, new First), 'Object instances and objects sharing equivalent properties are not equal');
+    assert.notOk(_.isEqual({value: 2}, new Second), 'The prototype chain of objects should not be examined');
 
     // Circular Arrays.
     (a = []).push(a);
@@ -492,13 +492,13 @@
     assert.ok(_.isEqual(a, b), 'Arrays containing circular references and equivalent properties are equal');
     a.push('Shemp');
     b.push('Curly');
-    assert.ok(!_.isEqual(a, b), 'Arrays containing circular references and different properties are not equal');
+    assert.notOk(_.isEqual(a, b), 'Arrays containing circular references and different properties are not equal');
 
     // More circular arrays #767.
     a = ['everything is checked but', 'this', 'is not'];
     a[1] = a;
     b = ['everything is checked but', ['this', 'array'], 'is not'];
-    assert.ok(!_.isEqual(a, b), 'Comparison of circular references with non-circular references are not equal');
+    assert.notOk(_.isEqual(a, b), 'Comparison of circular references with non-circular references are not equal');
 
     // Circular Objects.
     a = {abc: null};
@@ -511,13 +511,13 @@
     assert.ok(_.isEqual(a, b), 'Objects containing circular references and equivalent properties are equal');
     a.def = new Number(75);
     b.def = new Number(63);
-    assert.ok(!_.isEqual(a, b), 'Objects containing circular references and different properties are not equal');
+    assert.notOk(_.isEqual(a, b), 'Objects containing circular references and different properties are not equal');
 
     // More circular objects #767.
     a = {everything: 'is checked', but: 'this', is: 'not'};
     a.but = a;
     b = {everything: 'is checked', but: {that: 'object'}, is: 'not'};
-    assert.ok(!_.isEqual(a, b), 'Comparison of circular references with non-circular object references are not equal');
+    assert.notOk(_.isEqual(a, b), 'Comparison of circular references with non-circular object references are not equal');
 
     // Cyclic Structures.
     a = [{abc: null}];
@@ -530,7 +530,7 @@
     assert.ok(_.isEqual(a, b), 'Cyclic structures containing equivalent properties are equal');
     a[0].def = new String('Larry');
     b[0].def = new String('Curly');
-    assert.ok(!_.isEqual(a, b), 'Cyclic structures containing different properties are not equal');
+    assert.notOk(_.isEqual(a, b), 'Cyclic structures containing different properties are not equal');
 
     // Complex Circular References.
     a = {foo: {b: {foo: {c: {foo: null}}}}};
@@ -540,7 +540,7 @@
     assert.ok(_.isEqual(a, b), 'Cyclic structures with nested and identically-named properties are equal');
 
     // Chaining.
-    assert.ok(!_.isEqual(_({x: 1, y: void 0}).chain(), _({x: 1, z: 2}).chain()), 'Chained objects containing different values are not equal');
+    assert.notOk(_.isEqual(_({x: 1, y: void 0}).chain(), _({x: 1, z: 2}).chain()), 'Chained objects containing different values are not equal');
 
     a = _({x: 1, y: 2}).chain();
     b = _({x: 1, y: 2}).chain();
@@ -565,18 +565,26 @@
     assert.equal(_.isEqual({a: 0}, {a: -0}), false);
     assert.equal(_.isEqual([NaN], [NaN]), true);
     assert.equal(_.isEqual({a: NaN}, {a: NaN}), true);
+
+    if (typeof Symbol !== 'undefined') {
+      var symbol = Symbol('x');
+      assert.strictEqual(_.isEqual(symbol, symbol), true, 'A symbol is equal to itself');
+      assert.strictEqual(_.isEqual(symbol, Object(symbol)), true, 'Even when wrapped in Object()');
+      assert.strictEqual(_.isEqual(symbol, null), false, 'Different types are not equal');
+    }
+
   });
 
   QUnit.test('isEmpty', function(assert) {
-    assert.ok(!_([1]).isEmpty(), '[1] is not empty');
+    assert.notOk(_([1]).isEmpty(), '[1] is not empty');
     assert.ok(_.isEmpty([]), '[] is empty');
-    assert.ok(!_.isEmpty({one: 1}), '{one: 1} is not empty');
+    assert.notOk(_.isEmpty({one: 1}), '{one: 1} is not empty');
     assert.ok(_.isEmpty({}), '{} is empty');
     assert.ok(_.isEmpty(new RegExp('')), 'objects with prototype properties are empty');
     assert.ok(_.isEmpty(null), 'null is empty');
     assert.ok(_.isEmpty(), 'undefined is empty');
     assert.ok(_.isEmpty(''), 'the empty string is empty');
-    assert.ok(!_.isEmpty('moe'), 'but other strings are not');
+    assert.notOk(_.isEmpty('moe'), 'but other strings are not');
 
     var obj = {one: 1};
     delete obj.one;
@@ -584,27 +592,27 @@
 
     var args = function(){ return arguments; };
     assert.ok(_.isEmpty(args()), 'empty arguments object is empty');
-    assert.ok(!_.isEmpty(args('')), 'non-empty arguments object is not empty');
+    assert.notOk(_.isEmpty(args('')), 'non-empty arguments object is not empty');
 
     // covers collecting non-enumerable properties in IE < 9
     var nonEnumProp = {toString: 5};
-    assert.ok(!_.isEmpty(nonEnumProp), 'non-enumerable property is not empty');
+    assert.notOk(_.isEmpty(nonEnumProp), 'non-enumerable property is not empty');
   });
 
   if (typeof document === 'object') {
     QUnit.test('isElement', function(assert) {
-      assert.ok(!_.isElement('div'), 'strings are not dom elements');
+      assert.notOk(_.isElement('div'), 'strings are not dom elements');
       assert.ok(_.isElement(testElement), 'an element is a DOM element');
     });
   }
 
   QUnit.test('isArguments', function(assert) {
     var args = (function(){ return arguments; }(1, 2, 3));
-    assert.ok(!_.isArguments('string'), 'a string is not an arguments object');
-    assert.ok(!_.isArguments(_.isArguments), 'a function is not an arguments object');
+    assert.notOk(_.isArguments('string'), 'a string is not an arguments object');
+    assert.notOk(_.isArguments(_.isArguments), 'a function is not an arguments object');
     assert.ok(_.isArguments(args), 'but the arguments object is an arguments object');
-    assert.ok(!_.isArguments(_.toArray(args)), 'but not when it\'s converted into an array');
-    assert.ok(!_.isArguments([1, 2, 3]), 'and not vanilla arrays.');
+    assert.notOk(_.isArguments(_.toArray(args)), 'but not when it\'s converted into an array');
+    assert.notOk(_.isArguments([1, 2, 3]), 'and not vanilla arrays.');
   });
 
   QUnit.test('isObject', function(assert) {
@@ -614,24 +622,24 @@
       assert.ok(_.isObject(testElement), 'and DOM element');
     }
     assert.ok(_.isObject(function() {}), 'and functions');
-    assert.ok(!_.isObject(null), 'but not null');
-    assert.ok(!_.isObject(void 0), 'and not undefined');
-    assert.ok(!_.isObject('string'), 'and not string');
-    assert.ok(!_.isObject(12), 'and not number');
-    assert.ok(!_.isObject(true), 'and not boolean');
+    assert.notOk(_.isObject(null), 'but not null');
+    assert.notOk(_.isObject(void 0), 'and not undefined');
+    assert.notOk(_.isObject('string'), 'and not string');
+    assert.notOk(_.isObject(12), 'and not number');
+    assert.notOk(_.isObject(true), 'and not boolean');
     assert.ok(_.isObject(new String('string')), 'but new String()');
   });
 
   QUnit.test('isArray', function(assert) {
-    assert.ok(!_.isArray(void 0), 'undefined vars are not arrays');
-    assert.ok(!_.isArray(arguments), 'the arguments object is not an array');
+    assert.notOk(_.isArray(void 0), 'undefined vars are not arrays');
+    assert.notOk(_.isArray(arguments), 'the arguments object is not an array');
     assert.ok(_.isArray([1, 2, 3]), 'but arrays are');
   });
 
   QUnit.test('isString', function(assert) {
     var obj = new String('I am a string object');
     if (testElement) {
-      assert.ok(!_.isString(testElement), 'an element is not a string');
+      assert.notOk(_.isString(testElement), 'an element is not a string');
     }
     assert.ok(_.isString([1, 2, 3].join(', ')), 'but strings are');
     assert.strictEqual(_.isString('I am a string literal'), true, 'string literals are');
@@ -639,43 +647,148 @@
     assert.strictEqual(_.isString(1), false);
   });
 
+  QUnit.test('isSymbol', function(assert) {
+    assert.notOk(_.isSymbol(0), 'numbers are not symbols');
+    assert.notOk(_.isSymbol(''), 'strings are not symbols');
+    assert.notOk(_.isSymbol(_.isSymbol), 'functions are not symbols');
+    if (typeof Symbol === 'function') {
+      assert.ok(_.isSymbol(Symbol()), 'symbols are symbols');
+      assert.ok(_.isSymbol(Symbol('description')), 'described symbols are symbols');
+      assert.ok(_.isSymbol(Object(Symbol())), 'boxed symbols are symbols');
+    }
+  });
+
   QUnit.test('isNumber', function(assert) {
-    assert.ok(!_.isNumber('string'), 'a string is not a number');
-    assert.ok(!_.isNumber(arguments), 'the arguments object is not a number');
-    assert.ok(!_.isNumber(void 0), 'undefined is not a number');
+    assert.notOk(_.isNumber('string'), 'a string is not a number');
+    assert.notOk(_.isNumber(arguments), 'the arguments object is not a number');
+    assert.notOk(_.isNumber(void 0), 'undefined is not a number');
     assert.ok(_.isNumber(3 * 4 - 7 / 10), 'but numbers are');
     assert.ok(_.isNumber(NaN), 'NaN *is* a number');
     assert.ok(_.isNumber(Infinity), 'Infinity is a number');
-    assert.ok(!_.isNumber('1'), 'numeric strings are not numbers');
+    assert.notOk(_.isNumber('1'), 'numeric strings are not numbers');
   });
 
   QUnit.test('isBoolean', function(assert) {
-    assert.ok(!_.isBoolean(2), 'a number is not a boolean');
-    assert.ok(!_.isBoolean('string'), 'a string is not a boolean');
-    assert.ok(!_.isBoolean('false'), 'the string "false" is not a boolean');
-    assert.ok(!_.isBoolean('true'), 'the string "true" is not a boolean');
-    assert.ok(!_.isBoolean(arguments), 'the arguments object is not a boolean');
-    assert.ok(!_.isBoolean(void 0), 'undefined is not a boolean');
-    assert.ok(!_.isBoolean(NaN), 'NaN is not a boolean');
-    assert.ok(!_.isBoolean(null), 'null is not a boolean');
+    assert.notOk(_.isBoolean(2), 'a number is not a boolean');
+    assert.notOk(_.isBoolean('string'), 'a string is not a boolean');
+    assert.notOk(_.isBoolean('false'), 'the string "false" is not a boolean');
+    assert.notOk(_.isBoolean('true'), 'the string "true" is not a boolean');
+    assert.notOk(_.isBoolean(arguments), 'the arguments object is not a boolean');
+    assert.notOk(_.isBoolean(void 0), 'undefined is not a boolean');
+    assert.notOk(_.isBoolean(NaN), 'NaN is not a boolean');
+    assert.notOk(_.isBoolean(null), 'null is not a boolean');
     assert.ok(_.isBoolean(true), 'but true is');
     assert.ok(_.isBoolean(false), 'and so is false');
   });
 
+  QUnit.test('isMap', function(assert) {
+    assert.notOk(_.isMap('string'), 'a string is not a map');
+    assert.notOk(_.isMap(2), 'a number is not a map');
+    assert.notOk(_.isMap({}), 'an object is not a map');
+    assert.notOk(_.isMap(false), 'a boolean is not a map');
+    assert.notOk(_.isMap(void 0), 'undefined is not a map');
+    assert.notOk(_.isMap([1, 2, 3]), 'an array is not a map');
+    if (typeof Set === 'function') {
+      assert.notOk(_.isMap(new Set()), 'a set is not a map');
+    }
+    if (typeof WeakSet === 'function') {
+      assert.notOk(_.isMap(new WeakSet()), 'a weakset is not a map');
+    }
+    if (typeof WeakMap === 'function') {
+      assert.notOk(_.isMap(new WeakMap()), 'a weakmap is not a map');
+    }
+    if (typeof Map === 'function') {
+      var keyString = 'a string';
+      var obj = new Map();
+      obj.set(keyString, 'value');
+      assert.ok(_.isMap(obj), 'but a map is');
+    }
+  });
+
+  QUnit.test('isWeakMap', function(assert) {
+    assert.notOk(_.isWeakMap('string'), 'a string is not a weakmap');
+    assert.notOk(_.isWeakMap(2), 'a number is not a weakmap');
+    assert.notOk(_.isWeakMap({}), 'an object is not a weakmap');
+    assert.notOk(_.isWeakMap(false), 'a boolean is not a weakmap');
+    assert.notOk(_.isWeakMap(void 0), 'undefined is not a weakmap');
+    assert.notOk(_.isWeakMap([1, 2, 3]), 'an array is not a weakmap');
+    if (typeof Set === 'function') {
+      assert.notOk(_.isWeakMap(new Set()), 'a set is not a weakmap');
+    }
+    if (typeof WeakSet === 'function') {
+      assert.notOk(_.isWeakMap(new WeakSet()), 'a weakset is not a weakmap');
+    }
+    if (typeof Map === 'function') {
+      assert.notOk(_.isWeakMap(new Map()), 'a map is not a weakmap');
+    }
+    if (typeof WeakMap === 'function') {
+      var keyObj = {}, obj = new WeakMap();
+      obj.set(keyObj, 'value');
+      assert.ok(_.isWeakMap(obj), 'but a weakmap is');
+    }
+  });
+
+  QUnit.test('isSet', function(assert) {
+    assert.notOk(_.isSet('string'), 'a string is not a set');
+    assert.notOk(_.isSet(2), 'a number is not a set');
+    assert.notOk(_.isSet({}), 'an object is not a set');
+    assert.notOk(_.isSet(false), 'a boolean is not a set');
+    assert.notOk(_.isSet(void 0), 'undefined is not a set');
+    assert.notOk(_.isSet([1, 2, 3]), 'an array is not a set');
+    if (typeof Map === 'function') {
+      assert.notOk(_.isSet(new Map()), 'a map is not a set');
+    }
+    if (typeof WeakMap === 'function') {
+      assert.notOk(_.isSet(new WeakMap()), 'a weakmap is not a set');
+    }
+    if (typeof WeakSet === 'function') {
+      assert.notOk(_.isSet(new WeakSet()), 'a weakset is not a set');
+    }
+    if (typeof Set === 'function') {
+      var obj = new Set();
+      obj.add(1).add('string').add(false).add({});
+      assert.ok(_.isSet(obj), 'but a set is');
+    }
+  });
+
+  QUnit.test('isWeakSet', function(assert) {
+
+    assert.notOk(_.isWeakSet('string'), 'a string is not a weakset');
+    assert.notOk(_.isWeakSet(2), 'a number is not a weakset');
+    assert.notOk(_.isWeakSet({}), 'an object is not a weakset');
+    assert.notOk(_.isWeakSet(false), 'a boolean is not a weakset');
+    assert.notOk(_.isWeakSet(void 0), 'undefined is not a weakset');
+    assert.notOk(_.isWeakSet([1, 2, 3]), 'an array is not a weakset');
+    if (typeof Map === 'function') {
+      assert.notOk(_.isWeakSet(new Map()), 'a map is not a weakset');
+    }
+    if (typeof WeakMap === 'function') {
+      assert.notOk(_.isWeakSet(new WeakMap()), 'a weakmap is not a weakset');
+    }
+    if (typeof Set === 'function') {
+      assert.notOk(_.isWeakSet(new Set()), 'a set is not a weakset');
+    }
+    if (typeof WeakSet === 'function') {
+      var obj = new WeakSet();
+      obj.add({x: 1}, {y: 'string'}).add({y: 'string'}).add({z: [1, 2, 3]});
+      assert.ok(_.isWeakSet(obj), 'but a weakset is');
+    }
+  });
+
   QUnit.test('isFunction', function(assert) {
-    assert.ok(!_.isFunction(void 0), 'undefined vars are not functions');
-    assert.ok(!_.isFunction([1, 2, 3]), 'arrays are not functions');
-    assert.ok(!_.isFunction('moe'), 'strings are not functions');
+    assert.notOk(_.isFunction(void 0), 'undefined vars are not functions');
+    assert.notOk(_.isFunction([1, 2, 3]), 'arrays are not functions');
+    assert.notOk(_.isFunction('moe'), 'strings are not functions');
     assert.ok(_.isFunction(_.isFunction), 'but functions are');
     assert.ok(_.isFunction(function(){}), 'even anonymous ones');
 
     if (testElement) {
-      assert.ok(!_.isFunction(testElement), 'elements are not functions');
+      assert.notOk(_.isFunction(testElement), 'elements are not functions');
     }
 
     var nodelist = typeof document != 'undefined' && document.childNodes;
     if (nodelist) {
-      assert.ok(!_.isFunction(nodelist));
+      assert.notOk(_.isFunction(nodelist));
     }
   });
 
@@ -693,60 +806,68 @@
   }
 
   QUnit.test('isDate', function(assert) {
-    assert.ok(!_.isDate(100), 'numbers are not dates');
-    assert.ok(!_.isDate({}), 'objects are not dates');
+    assert.notOk(_.isDate(100), 'numbers are not dates');
+    assert.notOk(_.isDate({}), 'objects are not dates');
     assert.ok(_.isDate(new Date()), 'but dates are');
   });
 
   QUnit.test('isRegExp', function(assert) {
-    assert.ok(!_.isRegExp(_.identity), 'functions are not RegExps');
+    assert.notOk(_.isRegExp(_.identity), 'functions are not RegExps');
     assert.ok(_.isRegExp(/identity/), 'but RegExps are');
   });
 
   QUnit.test('isFinite', function(assert) {
-    assert.ok(!_.isFinite(void 0), 'undefined is not finite');
-    assert.ok(!_.isFinite(null), 'null is not finite');
-    assert.ok(!_.isFinite(NaN), 'NaN is not finite');
-    assert.ok(!_.isFinite(Infinity), 'Infinity is not finite');
-    assert.ok(!_.isFinite(-Infinity), '-Infinity is not finite');
+    assert.notOk(_.isFinite(void 0), 'undefined is not finite');
+    assert.notOk(_.isFinite(null), 'null is not finite');
+    assert.notOk(_.isFinite(NaN), 'NaN is not finite');
+    assert.notOk(_.isFinite(Infinity), 'Infinity is not finite');
+    assert.notOk(_.isFinite(-Infinity), '-Infinity is not finite');
     assert.ok(_.isFinite('12'), 'Numeric strings are numbers');
-    assert.ok(!_.isFinite('1a'), 'Non numeric strings are not numbers');
-    assert.ok(!_.isFinite(''), 'Empty strings are not numbers');
+    assert.notOk(_.isFinite('1a'), 'Non numeric strings are not numbers');
+    assert.notOk(_.isFinite(''), 'Empty strings are not numbers');
     var obj = new Number(5);
     assert.ok(_.isFinite(obj), 'Number instances can be finite');
     assert.ok(_.isFinite(0), '0 is finite');
     assert.ok(_.isFinite(123), 'Ints are finite');
     assert.ok(_.isFinite(-12.44), 'Floats are finite');
+    if (typeof Symbol === 'function') {
+      assert.notOk(_.isFinite(Symbol()), 'symbols are not numbers');
+      assert.notOk(_.isFinite(Symbol('description')), 'described symbols are not numbers');
+      assert.notOk(_.isFinite(Object(Symbol())), 'boxed symbols are not numbers');
+    }
   });
 
   QUnit.test('isNaN', function(assert) {
-    assert.ok(!_.isNaN(void 0), 'undefined is not NaN');
-    assert.ok(!_.isNaN(null), 'null is not NaN');
-    assert.ok(!_.isNaN(0), '0 is not NaN');
-    assert.ok(!_.isNaN(new Number(0)), 'wrapped 0 is not NaN');
+    assert.notOk(_.isNaN(void 0), 'undefined is not NaN');
+    assert.notOk(_.isNaN(null), 'null is not NaN');
+    assert.notOk(_.isNaN(0), '0 is not NaN');
+    assert.notOk(_.isNaN(new Number(0)), 'wrapped 0 is not NaN');
     assert.ok(_.isNaN(NaN), 'but NaN is');
     assert.ok(_.isNaN(new Number(NaN)), 'wrapped NaN is still NaN');
+    if (typeof Symbol !== 'undefined'){
+      assert.notOk(_.isNaN(Symbol()), 'symbol is not NaN');
+    }
   });
 
   QUnit.test('isNull', function(assert) {
-    assert.ok(!_.isNull(void 0), 'undefined is not null');
-    assert.ok(!_.isNull(NaN), 'NaN is not null');
+    assert.notOk(_.isNull(void 0), 'undefined is not null');
+    assert.notOk(_.isNull(NaN), 'NaN is not null');
     assert.ok(_.isNull(null), 'but null is');
   });
 
   QUnit.test('isUndefined', function(assert) {
-    assert.ok(!_.isUndefined(1), 'numbers are defined');
-    assert.ok(!_.isUndefined(null), 'null is defined');
-    assert.ok(!_.isUndefined(false), 'false is defined');
-    assert.ok(!_.isUndefined(NaN), 'NaN is defined');
+    assert.notOk(_.isUndefined(1), 'numbers are defined');
+    assert.notOk(_.isUndefined(null), 'null is defined');
+    assert.notOk(_.isUndefined(false), 'false is defined');
+    assert.notOk(_.isUndefined(NaN), 'NaN is defined');
     assert.ok(_.isUndefined(), 'nothing is undefined');
     assert.ok(_.isUndefined(void 0), 'undefined is undefined');
   });
 
   QUnit.test('isError', function(assert) {
-    assert.ok(!_.isError(1), 'numbers are not Errors');
-    assert.ok(!_.isError(null), 'null is not an Error');
-    assert.ok(!_.isError(Error), 'functions are not Errors');
+    assert.notOk(_.isError(1), 'numbers are not Errors');
+    assert.notOk(_.isError(null), 'null is not an Error');
+    assert.notOk(_.isError(Error), 'functions are not Errors');
     assert.ok(_.isError(new Error()), 'Errors are Errors');
     assert.ok(_.isError(new EvalError()), 'EvalErrors are Errors');
     assert.ok(_.isError(new RangeError()), 'RangeErrors are Errors');
@@ -775,13 +896,13 @@
   QUnit.test('has', function(assert) {
     var obj = {foo: 'bar', func: function(){}};
     assert.ok(_.has(obj, 'foo'), 'has() checks that the object has a property.');
-    assert.ok(!_.has(obj, 'baz'), "has() returns false if the object doesn't have the property.");
+    assert.notOk(_.has(obj, 'baz'), "has() returns false if the object doesn't have the property.");
     assert.ok(_.has(obj, 'func'), 'has() works for functions too.');
     obj.hasOwnProperty = null;
     assert.ok(_.has(obj, 'foo'), 'has() works even when the hasOwnProperty method is deleted.');
     var child = {};
     child.prototype = obj;
-    assert.ok(!_.has(child, 'foo'), 'has() does not check the prototype chain for a property.');
+    assert.notOk(_.has(child, 'foo'), 'has() does not check the prototype chain for a property.');
     assert.strictEqual(_.has(null, 'foo'), false, 'has() returns false for null');
     assert.strictEqual(_.has(void 0, 'foo'), false, 'has() returns false for undefined');
   });
@@ -840,8 +961,8 @@
     assert.equal(_.matcher({})(null), true, 'Empty spec called with null object returns true');
     assert.equal(_.matcher({a: 1})(null), false, 'Non-empty spec called with null object returns false');
 
-    assert.ok(_.find(stooges, _.matcher({hair: false})) === curly, 'returns a predicate that can be used by finding functions.');
-    assert.ok(_.find(stooges, _.matcher(moe)) === moe, 'can be used to locate an object exists in a collection.');
+    assert.strictEqual(_.find(stooges, _.matcher({hair: false})), curly, 'returns a predicate that can be used by finding functions.');
+    assert.strictEqual(_.find(stooges, _.matcher(moe)), moe, 'can be used to locate an object exists in a collection.');
     assert.deepEqual(_.filter([null, void 0], _.matcher({a: 1})), [], 'Do not throw on null values.');
 
     assert.deepEqual(_.filter([null, void 0], _.matcher(null)), [null, void 0], 'null matches null');

vendor/underscore/test/utility.js

@@ -52,8 +52,8 @@
   QUnit.test('#750 - Return _ instance.', function(assert) {
     assert.expect(2);
     var instance = _([]);
-    assert.ok(_(instance) === instance);
-    assert.ok(new _(instance) === instance);
+    assert.strictEqual(_(instance), instance);
+    assert.strictEqual(new _(instance), instance);
   });
 
   QUnit.test('identity', function(assert) {
@@ -137,11 +137,12 @@
   });
 
   QUnit.test('mixin', function(assert) {
-    _.mixin({
+    var ret = _.mixin({
       myReverse: function(string) {
         return string.split('').reverse().join('');
       }
     });
+    assert.equal(ret, _, 'returns the _ object to facilitate chaining');
     assert.equal(_.myReverse('panacea'), 'aecanap', 'mixed in a function to _');
     assert.equal(_('champ').myReverse(), 'pmahc', 'mixed in a function to the OOP wrapper');
   });
@@ -188,7 +189,7 @@
     var str = 'some string & another string & yet another';
     var escaped = _.escape(str);
 
-    assert.ok(escaped.indexOf('&') !== -1, 'handles & aka &');
+    assert.notStrictEqual(escaped.indexOf('&'), -1, 'handles & aka &');
     assert.equal(_.unescape(str), str, 'can unescape &');
   });
 
@@ -370,9 +371,9 @@
   });
 
   QUnit.test('#547 - _.templateSettings is unchanged by custom settings.', function(assert) {
-    assert.ok(!_.templateSettings.variable);
+    assert.notOk(_.templateSettings.variable);
     _.template('', {}, {variable: 'x'});
-    assert.ok(!_.templateSettings.variable);
+    assert.notOk(_.templateSettings.variable);
   });
 
   QUnit.test('#556 - undefined template variables.', function(assert) {
@@ -397,11 +398,11 @@
     assert.expect(2);
     var count = 0;
     var template = _.template('<%= f() %>');
-    template({f: function(){ assert.ok(!count++); }});
+    template({f: function(){ assert.notOk(count++); }});
 
     var countEscaped = 0;
     var templateEscaped = _.template('<%- f() %>');
-    templateEscaped({f: function(){ assert.ok(!countEscaped++); }});
+    templateEscaped({f: function(){ assert.notOk(countEscaped++); }});
   });
 
   QUnit.test('#746 - _.template settings are not modified.', function(assert) {

vendor/underscore/underscore.js

@@ -1,6 +1,6 @@
 //     Underscore.js 1.8.3
 //     http://underscorejs.org
-//     (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+//     (c) 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 //     Underscore may be freely distributed under the MIT license.
 
 (function() {
@@ -20,6 +20,7 @@
 
   // Save bytes in the minified (but not gzipped) version:
   var ArrayProto = Array.prototype, ObjProto = Object.prototype;
+  var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;
 
   // Create quick reference variables for speed access to core prototypes.
   var push = ArrayProto.push,
@@ -83,18 +84,23 @@
     };
   };
 
+  var builtinIteratee;
+
   // An internal function to generate callbacks that can be applied to each
   // element in a collection, returning the desired result — either `identity`,
   // an arbitrary callback, a property matcher, or a property accessor.
   var cb = function(value, context, argCount) {
+    if (_.iteratee !== builtinIteratee) return _.iteratee(value, context);
     if (value == null) return _.identity;
     if (_.isFunction(value)) return optimizeCb(value, context, argCount);
     if (_.isObject(value)) return _.matcher(value);
     return _.property(value);
   };
 
-  // An external wrapper for the internal callback generator
-  _.iteratee = function(value, context) {
+  // External wrapper for our callback generator. Users may customize
+  // `_.iteratee` if they want additional predicate/iteratee shorthand styles.
+  // This abstraction hides the internal-only argCount argument.
+  _.iteratee = builtinIteratee = function(value, context) {
     return cb(value, context, Infinity);
   };
 
@@ -218,12 +224,8 @@
 
   // Return the first value which passes a truth test. Aliased as `detect`.
   _.find = _.detect = function(obj, predicate, context) {
-    var key;
-    if (isArrayLike(obj)) {
-      key = _.findIndex(obj, predicate, context);
-    } else {
-      key = _.findKey(obj, predicate, context);
-    }
+    var keyFinder = isArrayLike(obj) ? _.findIndex : _.findKey;
+    var key = keyFinder(obj, predicate, context);
     if (key !== void 0 && key !== -1) return obj[key];
   };
 
@@ -465,7 +467,7 @@
   // values in the array. Aliased as `head` and `take`. The **guard** check
   // allows it to work with `_.map`.
   _.first = _.head = _.take = function(array, n, guard) {
-    if (array == null) return void 0;
+    if (array == null || array.length < 1) return void 0;
     if (n == null || guard) return array[0];
     return _.initial(array, array.length - n);
   };
@@ -480,7 +482,7 @@
   // Get the last element of an array. Passing **n** will return the last N
   // values in the array.
   _.last = function(array, n, guard) {
-    if (array == null) return void 0;
+    if (array == null || array.length < 1) return void 0;
     if (n == null || guard) return array[array.length - 1];
     return _.rest(array, Math.max(0, array.length - n));
   };
@@ -494,7 +496,7 @@
 
   // Trim out all falsy values from an array.
   _.compact = function(array) {
-    return _.filter(array, _.identity);
+    return _.filter(array, Boolean);
   };
 
   // Internal implementation of a recursive `flatten` function.
@@ -504,7 +506,7 @@
     for (var i = 0, length = getLength(input); i < length; i++) {
       var value = input[i];
       if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
-        // Flatten current level of array or arguments object
+        // Flatten current level of array or arguments object.
         if (shallow) {
           var j = 0, len = value.length;
           while (j < len) output[idx++] = value[j++];
@@ -592,7 +594,7 @@
   });
 
   // Complement of _.zip. Unzip accepts an array of arrays and groups
-  // each array's elements on shared indices
+  // each array's elements on shared indices.
   _.unzip = function(array) {
     var length = array && _.max(array, getLength).length || 0;
     var result = Array(length);
@@ -622,7 +624,7 @@
     return result;
   };
 
-  // Generator function to create the findIndex and findLastIndex functions
+  // Generator function to create the findIndex and findLastIndex functions.
   var createPredicateIndexFinder = function(dir) {
     return function(array, predicate, context) {
       predicate = cb(predicate, context);
@@ -635,7 +637,7 @@
     };
   };
 
-  // Returns the first index on an array-like that passes a predicate test
+  // Returns the first index on an array-like that passes a predicate test.
   _.findIndex = createPredicateIndexFinder(1);
   _.findLastIndex = createPredicateIndexFinder(-1);
 
@@ -652,7 +654,7 @@
     return low;
   };
 
-  // Generator function to create the indexOf and lastIndexOf functions
+  // Generator function to create the indexOf and lastIndexOf functions.
   var createIndexFinder = function(dir, predicateFind, sortedIndex) {
     return function(array, item, idx) {
       var i = 0, length = getLength(array);
@@ -707,7 +709,7 @@
   };
 
   // Split an **array** into several arrays containing **count** or less elements
-  // of initial array
+  // of initial array.
   _.chunk = function(array, count) {
     if (count == null || count < 1) return [];
 
@@ -723,7 +725,7 @@
   // ------------------
 
   // Determines whether to execute a function as a constructor
-  // or a normal function with the provided arguments
+  // or a normal function with the provided arguments.
   var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
     if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
     var self = baseCreate(sourceFunc.prototype);
@@ -859,12 +861,12 @@
     };
 
     var debounced = restArgs(function(args) {
-      var callNow = immediate && !timeout;
       if (timeout) clearTimeout(timeout);
-      if (callNow) {
+      if (immediate) {
+        var callNow = !timeout;
         timeout = setTimeout(later, wait);
-        result = func.apply(this, args);
-      } else if (!immediate) {
+        if (callNow) result = func.apply(this, args);
+      } else {
         timeout = _.delay(later, wait, this, args);
       }
 
@@ -959,7 +961,7 @@
   };
 
   // Retrieve the names of an object's own properties.
-  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  // Delegates to **ECMAScript 5**'s native `Object.keys`.
   _.keys = function(obj) {
     if (!_.isObject(obj)) return [];
     if (nativeKeys) return nativeKeys(obj);
@@ -991,8 +993,8 @@
     return values;
   };
 
-  // Returns the results of applying the iteratee to each element of the object
-  // In contrast to _.map it returns an object
+  // Returns the results of applying the iteratee to each element of the object.
+  // In contrast to _.map it returns an object.
   _.mapObject = function(obj, iteratee, context) {
     iteratee = cb(iteratee, context);
     var keys = _.keys(obj),
@@ -1027,7 +1029,7 @@
   };
 
   // Return a sorted list of the function names available on the object.
-  // Aliased as `methods`
+  // Aliased as `methods`.
   _.functions = _.methods = function(obj) {
     var names = [];
     for (var key in obj) {
@@ -1058,11 +1060,11 @@
   // Extend a given object with all the properties in passed-in object(s).
   _.extend = createAssigner(_.allKeys);
 
-  // Assigns a given object with all the own properties in the passed-in object(s)
+  // Assigns a given object with all the own properties in the passed-in object(s).
   // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
   _.extendOwn = _.assign = createAssigner(_.keys);
 
-  // Returns the first key on an object that passes a predicate test
+  // Returns the first key on an object that passes a predicate test.
   _.findKey = function(obj, predicate, context) {
     predicate = cb(predicate, context);
     var keys = _.keys(obj), key;
@@ -1097,7 +1099,7 @@
     return result;
   });
 
-   // Return a copy of the object without the blacklisted properties.
+  // Return a copy of the object without the blacklisted properties.
   _.omit = restArgs(function(obj, keys) {
     var iteratee = keys[0], context;
     if (_.isFunction(iteratee)) {
@@ -1185,7 +1187,7 @@
         return '' + a === '' + b;
       case '[object Number]':
         // `NaN`s are equivalent, but non-reflexive.
-        // Object(NaN) is equivalent to NaN
+        // Object(NaN) is equivalent to NaN.
         if (+a !== +a) return +b !== +b;
         // An `egal` comparison is performed for other numeric values.
         return +a === 0 ? 1 / +a === 1 / b : +a === +b;
@@ -1195,6 +1197,8 @@
         // millisecond representations. Note that invalid dates with millisecond representations
         // of `NaN` are not equivalent.
         return +a === +b;
+      case '[object Symbol]':
+        return SymbolProto.valueOf.call(a) === SymbolProto.valueOf.call(b);
     }
 
     var areArrays = className === '[object Array]';
@@ -1285,8 +1289,8 @@
     return type === 'function' || type === 'object' && !!obj;
   };
 
-  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError.
-  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error'], function(name) {
+  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError, isMap, isWeakMap, isSet, isWeakSet.
+  _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error', 'Symbol', 'Map', 'WeakMap', 'Set', 'WeakSet'], function(name) {
     _['is' + name] = function(obj) {
       return toString.call(obj) === '[object ' + name + ']';
     };
@@ -1311,7 +1315,7 @@
 
   // Is a given object a finite number?
   _.isFinite = function(obj) {
-    return isFinite(obj) && !isNaN(parseFloat(obj));
+    return !_.isSymbol(obj) && isFinite(obj) && !isNaN(parseFloat(obj));
   };
 
   // Is the given value `NaN`?
@@ -1404,7 +1408,7 @@
     return new Date().getTime();
   };
 
-   // List of HTML entities for escaping.
+  // List of HTML entities for escaping.
   var escapeMap = {
     '&': '&amp;',
     '<': '&lt;',
@@ -1420,7 +1424,7 @@
     var escaper = function(match) {
       return map[match];
     };
-    // Regexes for identifying a key that needs to be escaped
+    // Regexes for identifying a key that needs to be escaped.
     var source = '(?:' + _.keys(map).join('|') + ')';
     var testRegexp = RegExp(source);
     var replaceRegexp = RegExp(source, 'g');
@@ -1569,6 +1573,7 @@
         return chainResult(this, func.apply(_, args));
       };
     });
+    return _;
   };
 
   // Add all of the Underscore functions to the wrapper object.
@@ -1603,7 +1608,7 @@
   _.prototype.valueOf = _.prototype.toJSON = _.prototype.value;
 
   _.prototype.toString = function() {
-    return '' + this._wrapped;
+    return String(this._wrapped);
   };
 
   // AMD registration happens at the end for compatibility with AMD loaders