Bump to v4.17.21

Improve performance of toNumber, trim and trimEnd on large input strings
This prevents potential ReDoS attacks using `_.toNumber` and `_.trim*` as potential attack vectors. Closes #5065.
2026-01-29 14:37:49 +00:00 · 2021-02-20 23:33:48 +08:00 · 2021-02-20 17:18:39 +08:00 · 2021-02-20 16:28:01 +08:00 · 2020-08-14 00:52:55 +08:00 · 2020-08-14 00:36:26 +08:00
846 changed files with 146495 additions and 38414 deletions
--- a/.commitlintrc.js
+++ b/.commitlintrc.js
@@ -1,29 +0,0 @@
-'use strict';
-
-module.exports = {
-  extends: [
-    '@commitlint/config-conventional', // scoped packages are not prefixed
-  ],
-  rules: {
-    'type-enum': [
-      2,
-      'always',
-      [
-        'build',
-        'chore',
-        'ci',
-        'docs',
-        'feat',
-        'fix',
-        'perf',
-        'proposal',
-        'refactor',
-        'release',
-        'revert',
-        'style',
-        'test',
-        'wip',
-      ],
-    ],
-  },
-};
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,5 +0,0 @@
-coverage/
-coverage-merged/
-dist/
-node_modules/
-types/
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,99 +0,0 @@
-{
-  "extends": ["airbnb-base", "prettier"],
-  "root": true,
-  "env": {
-    "amd": true,
-    "browser": true,
-    "es6": true,
-    "jest": true,
-    "node": true
-  },
-  "globals": {
-    "BigInt": "readonly",
-    "BigInt64Array": "readonly",
-    "BigUint64Array": "readonly",
-    "globalThis": "readonly"
-  },
-  "parserOptions": {
-    "ecmaVersion": 2020,
-    "sourceType": "module"
-  },
-  "plugins": [
-    "prettier"
-  ],
-  "rules": {
-    "prettier/prettier": "error",
-    // Overridden
-    "camelcase": ["error", { "properties": "never", "allow": [ "W[0-9]+_"] }],
-    "import/extensions": "off",
-    "no-eval": "off",
-    "no-self-compare": "off",
-    "one-var": ["error", "never"],
-    // @TODO: Fix the following rules progressively.
-    "arrow-body-style": "warn",
-    "prefer-arrow-callback": "warn",
-    "prefer-object-spread": "off",
-    "max-classes-per-file": "off",
-    "dot-notation": "off",
-    "object-shorthand": "off",
-    "no-param-reassign": "off",
-    "no-cond-assign": "off",
-    "prefer-destructuring": "off",
-    "func-names": "off",
-    "no-nested-ternary": "off",
-    "no-plusplus": "off",
-    "strict": "off",
-    "no-restricted-syntax": "off",
-    "import/no-mutable-exports": "off",
-    "guard-for-in": "off",
-    "import/prefer-default-export": "off",
-    "prefer-rest-params": "off",
-    "prefer-spread": "off",
-    "no-lonely-if": "off",
-    "no-prototype-builtins": "off",
-    "no-continue": "off",
-    "no-shadow": "off",
-    // Rules up for discussion.
-    "no-multi-assign": "off",
-    "new-cap": "off"
-  },
-  "overrides": [
-    {
-      "files": ["**/*.ts"],
-      "parserOptions": {
-         "project": "./tsconfig.json"
-      },
-      "extends": [
-        "airbnb-typescript/base",
-        "prettier"
-      ],
-      "plugins": ["@typescript-eslint"],
-      "rules": {
-        "@typescript-eslint/no-unused-vars": [
-          "warn",
-          {
-            "vars": "all",
-            "args": "after-used",
-            "ignoreRestSiblings": true,
-            "argsIgnorePattern": "^_" // For tsc compatibility.
-          }
-        ],
-        "comma-dangle": "off",
-        "implicit-arrow-linebreak": "off", // Conflicts with prettier.
-        "import/extensions": "off",
-        "import/prefer-default-export": "off",
-        "operator-linebreak": "off",
-        "object-curly-newline": "off",
-        "prefer-rest-params": "off", // We need to use params.
-        "prettier/prettier": "error",
-        "@typescript-eslint/no-shadow": "warn",
-        "@typescript-eslint/no-use-before-define": ["warn", { "functions": false }],
-        "import/no-cycle": "warn",
-        "no-bitwise": "off",
-        "no-unsafe-finally": "warn",
-        "no-param-reassign": "off",
-        "no-shadow": "warn"
-      }
-    }
-  ]
-}
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1 @@
 * text=auto
-*.lockb binary diff=lockb
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,13 +1,7 @@
-# :construction: Notice :construction:
-
-Pardon the mess. The `master` branch is in flux while we work on Lodash v5. This
-means things like npm scripts, which we encourage using for contributions, may
-not be working. Thank you for your patience.
-
 # Contributing to Lodash

 Contributions are always welcome. Before contributing please read the
-[code of conduct](https://code-of-conduct.openjsf.org) &
+[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,
@@ -25,19 +19,21 @@ Before submitting a request, please search for similar ones in the

 ## Pull Requests

-For additions or bug fixes, please modify the relevant files. Include
-updated unit tests in the `test` directory as part of your pull request.
-Unit test files should be named `[filename].test.js`.
+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`.
+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 [JS Foundation](https://openjsf.org/).
-As such, we request that all contributors sign the JS Foundation
-[contributor license agreement (CLA)](https://cla.js.foundation/lodash/lodash).
+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/).
@@ -65,7 +61,18 @@ established in the code.
  [JSDoc-style](http://www.2ality.com/2011/08/jsdoc-intro.html) comments for
  functions.

-Guidelines are enforced using [ESLint](https://www.npmjs.com/package/eslint):
+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`.
--- a/.github/lock.yml
+++ b/.github/lock.yml
@@ -1,24 +0,0 @@
-# Configuration for lock-threads - https://github.com/dessant/lock-threads
-
-# Number of days of inactivity before a closed issue or pull request is locked
-daysUntilLock: 365
-
-# Skip issues and pull requests created before a given timestamp. Timestamp must
-# follow ISO 8601 (`YYYY-MM-DD`). Set to `false` to disable
-skipCreatedBefore: false
-
-# Issues and pull requests with these labels will not be locked. Set to `[]` to disable
-exemptLabels:
-  - votes needed
-
-# Label to add before locking, such as `outdated`. Set to `false` to disable
-lockLabel: false
-
-# Comment to post before locking. Set to `false` to disable
-lockComment: >
-  This thread has been automatically locked since there has not been
-  any recent activity after it was closed. Please open a new issue for
-  related bugs.
-
-# Assign `resolved` as the reason for locking. Set to `false` to disable
-setLockReason: true
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,16 +0,0 @@
-name: CI
-on:
-  pull_request:
-    branches: [ main ]
-  push:
-    branches: [ main ]
-
-jobs:
-  tests:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: oven-sh/setup-bun@v1
-        with:
-          bun-version: 1.0.2
-      - run: bun install
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,4 @@
 .DS_Store
-*.log*
-dist/
-node_modules/
-*.code-workspace
-*.lockb
-*.sublime-project
-*.sublime-workspace
+*.log
+doc/*.html
+node_modules
--- a/.husky/.gitignore
+++ b/.husky/.gitignore
@@ -1 +0,0 @@
-_
--- a/.husky/commit-msg
+++ b/.husky/commit-msg
@@ -1,4 +0,0 @@
-#!/bin/sh
-. "$(dirname "$0")/_/husky.sh"
-
-bun run commitlint --edit "$1"
--- a/.husky/pre-commit
+++ b/.husky/pre-commit
@@ -1,4 +0,0 @@
-#!/bin/sh
-. "$(dirname "$0")/_/husky.sh"
-
-bun run lint-staged
--- a/.jscsrc
+++ b/.jscsrc
@@ -0,0 +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": [
+    "=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=",
+    "&=", "|=", "^=",
+
+    "+", "-", "*", "/", "%", "<<", ">>", ">>>", "&",
+    "|", "^", "&&", "||", "===", "==", ">=",
+    "<=", "<", ">", "!=", "!=="
+  ],
+  "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 },
+
+  "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
+  }
+}
--- a/.markdown-doctest-setup.js
+++ b/.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)
+};
--- a/.prettierignore
+++ b/.prettierignore
@@ -1,5 +0,0 @@
-coverage/
-coverage-merged/
-dist/
-node_modules/
-types/
--- a/.prettierrc
+++ b/.prettierrc
@@ -1,6 +0,0 @@
-{
-  "printWidth": 100,
-  "useTabs": false,
-  "tabWidth": 4,
-  "singleQuote": true
-}
--- a/.travis.yml
+++ b/.travis.yml
@@ -0,0 +1,135 @@
+language: node_js
+sudo: false
+node_js:
+  - 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
+
+  matrix:
+    -
+    - BIN=phantomjs
+    - ISTANBUL=true
+    - SAUCE_LABS=true
+
+matrix:
+  include:
+    - 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:
+  # 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
+        done
+      fi
+
+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:
+  # 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
--- a/4
+++ b/4
@@ -1,6 +1,4 @@
-The MIT License
-
-Copyright JS Foundation and other contributors <https://js.foundation/>
+Copyright OpenJS Foundation and other contributors <https://openjsf.org/>

 Based on Underscore.js, copyright Jeremy Ashkenas,
 DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
--- a/README.md
+++ b/README.md
@@ -1,26 +1,30 @@
-# lodash
+# lodash v4.17.21

 [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://code-of-conduct.openjsf.org)
+[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):
 ```shell
-$ bun run build
+$ npm run build
 $ lodash -o ./dist/lodash.js
 $ lodash core -o ./dist/lodash.core.js
 ```

 ## Download

- * [Core build](https://raw.githubusercontent.com/lodash/lodash/4.17.10-npm/core.js) ([~4 kB gzipped](https://raw.githubusercontent.com/lodash/lodash/4.17.10-npm/core.min.js))
- * [Full build](https://raw.githubusercontent.com/lodash/lodash/4.17.10-npm/lodash.js) ([~24 kB gzipped](https://raw.githubusercontent.com/lodash/lodash/4.17.10-npm/lodash.min.js))
- * [CDN copies](https://www.jsdelivr.com/projects/lodash) [![jsDelivr Hits](https://data.jsdelivr.com/v1/package/npm/lodash/badge)](https://www.jsdelivr.com/package/npm/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)

-Lodash is released under the [MIT license](https://raw.githubusercontent.com/lodash/lodash/4.17.10-npm/LICENSE) & supports modern environments.<br>
+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.

 ## Installation
@@ -30,12 +34,13 @@ In a browser:
 <script src="lodash.js"></script>
 ```

-Using bun:
+Using npm:
 ```shell
-$ bun i lodash
+$ npm i -g npm
+$ npm i --save lodash
 ```

-In [Bun](https://bun.sh):
+In Node.js:
 ```js
 // Load the full build.
 var _ = require('lodash');
@@ -53,7 +58,8 @@ var at = require('lodash/at');
 var curryN = require('lodash/fp/curryN');
 ```

-Looking for Lodash modules written in ES6 or smaller bundle sizes? Check out [lodash-es](https://www.npmjs.com/package/lodash-es).
+**Note:**<br>
+Install [n_](https://www.npmjs.com/package/n_) for Lodash use in the Node.js < 6 REPL.

 ## Why Lodash?

@@ -68,5 +74,7 @@ numbers, objects, strings, etc. Lodash’s modular methods are great for:

 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/search?q=keywords:lodash-modularized)
+ * [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)
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -1,35 +0,0 @@
-# Security Policy
-
-## Supported versions
-
-The following table describes the versions of this project that are currently
-supported with security updates:
-
-| Version | Supported          |
-| ------- | ------------------ |
-| 4.x   | :white_check_mark:   |
-| 3.x   | :x:                  |
-| 2.x   | :x:                  |
-| 1.x   | :x:                  |
-
-## Responsible disclosure security policy
-
-A responsible disclosure policy helps protect users of the project from publicly
-disclosed security vulnerabilities without a fix by employing a process where
-vulnerabilities are first triaged in a private manner, and only publicly disclosed
-after a reasonable time period that allows patching the vulnerability and provides
-an upgrade path for users.
-
-We kindly ask you to refrain from malicious acts that put our users, the project,
-or any of the project’s team members at risk.
-
-## Reporting a security issue
-
-We consider the security of Lodash a top priority. But no matter how much effort
-we put into security, there can still be vulnerabilities present.
-
-If you discover a security vulnerability, please report the security issue
-directly to the Lodash maintainers through the Security tab of the Lodash
-repository.
-
-Your efforts to responsibly disclose your findings are sincerely appreciated.
--- a/bunfig.toml
+++ b/bunfig.toml
@@ -1,2 +0,0 @@
-[install.lockfile]
-print = "yarn"
--- a/dist/lodash.core.js
+++ b/dist/lodash.core.js
--- a/dist/lodash.core.min.js
+++ b/dist/lodash.core.min.js
@@ -0,0 +1,29 @@
+/**
+ * @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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--- a/dist/lodash.js
+++ b/dist/lodash.js
--- a/dist/lodash.min.js
+++ b/dist/lodash.min.js
@@ -0,0 +1,140 @@
+/**
+ * @license
+ * 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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+		module.exports = factory();
+	else if(typeof define === 'function' && define.amd)
+		define([], factory);
+	else if(typeof exports === 'object')
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+	/** Used to map aliases to their real names. */
+	exports.aliasToReal = {
+
+	  // 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
+	  },
+	  'object': {
+	    'assign': true,
+	    'assignAll': true,
+	    'assignAllWith': true,
+	    'assignIn': true,
+	    'assignInAll': true,
+	    'assignInAllWith': true,
+	    'assignInWith': true,
+	    'assignWith': true,
+	    'defaults': true,
+	    'defaultsAll': true,
+	    'defaultsDeep': true,
+	    'defaultsDeepAll': true,
+	    'merge': 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
+	};
+
+
+/***/ })
+/******/ ])
+});
+;
--- a/doc/README.md
+++ b/doc/README.md
--- a/fp/_baseConvert.js
+++ b/fp/_baseConvert.js
@@ -0,0 +1,569 @@
+var mapping = require('./_mapping'),
+    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 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, options) {
+  var isLib = typeof name == 'function',
+      isObj = name === Object(name);
+
+  if (isObj) {
+    options = func;
+    func = name;
+    name = undefined;
+  }
+  if (func == null) {
+    throw new TypeError;
+  }
+  options || (options = {});
+
+  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,
+    '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,
+    'toInteger': util.toInteger,
+    'toPath': util.toPath
+  };
+
+  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 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],
+            result = iteratee(func, arity),
+            length = result.length;
+
+        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) {
+      return function(source) {
+        var func = this;
+        if (!isFunction(func)) {
+          return mixin(func, Object(source));
+        }
+        var pairs = [];
+        each(keys(source), function(key) {
+          if (isFunction(source[key])) {
+            pairs.push([key, func.prototype[key]]);
+          }
+        });
+
+        mixin(func, Object(source));
+
+        each(pairs, function(pair) {
+          var value = pair[1];
+          if (isFunction(value)) {
+            func.prototype[pair[0]] = value;
+          } else {
+            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), options);
+      };
+    }
+  };
+
+  /*--------------------------------------------------------------------------*/
+
+  /**
+   * 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 = wrapped);
+    if (result == func) {
+      result = forceCurry ? curry(result, 1) : function() {
+        return func.apply(this, arguments);
+      };
+    }
+    result.convert = createConverter(realName, func);
+    result.placeholder = func.placeholder = placeholder;
+
+    return result;
+  }
+
+  /*--------------------------------------------------------------------------*/
+
+  if (!isObj) {
+    return wrap(name, func, defaultHolder);
+  }
+  var _ = func;
+
+  // Convert methods by ary cap.
+  var pairs = [];
+  each(aryMethodKeys, function(aryKey) {
+    each(mapping.aryMethod[aryKey], function(key) {
+      var func = _[mapping.remap[key] || key];
+      if (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];
+  });
+
+  _.convert = convertLib;
+  _.placeholder = _;
+
+  // Assign aliases.
+  each(keys(_), function(key) {
+    each(mapping.realToAlias[key] || [], function(alias) {
+      _[alias] = _[key];
+    });
+  });
+
+  return _;
+}
+
+module.exports = baseConvert;
--- a/fp/_convertBrowser.js
+++ b/fp/_convertBrowser.js
@@ -0,0 +1,18 @@
+var baseConvert = require('./_baseConvert');
+
+/**
+ * Converts `lodash` to an immutable auto-curried iteratee-first data-last
+ * version with conversion `options` applied.
+ *
+ * @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, options) {
+  return baseConvert(lodash, lodash, options);
+}
+
+if (typeof _ == 'function' && typeof _.runInContext == 'function') {
+  _ = browserConvert(_.runInContext());
+}
+module.exports = browserConvert;
--- a/fp/_mapping.js
+++ b/fp/_mapping.js
@@ -0,0 +1,358 @@
+/** Used to map aliases to their real names. */
+exports.aliasToReal = {
+
+  // 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
+  },
+  'object': {
+    'assign': true,
+    'assignAll': true,
+    'assignAllWith': true,
+    'assignIn': true,
+    'assignInAll': true,
+    'assignInAllWith': true,
+    'assignInWith': true,
+    'assignWith': true,
+    'defaults': true,
+    'defaultsAll': true,
+    'defaultsDeep': true,
+    'defaultsDeepAll': true,
+    'merge': 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
+};
--- a/fp/placeholder.js
+++ b/fp/placeholder.js
@@ -0,0 +1,6 @@
+/**
+ * The default argument placeholder value for methods.
+ *
+ * @type {Object}
+ */
+module.exports = {};
--- a/lib/common/file.js
+++ b/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
+};
--- a/lib/common/mapping.js
+++ b/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);
--- a/lib/common/minify.js
+++ b/lib/common/minify.js
@@ -0,0 +1,39 @@
+'use strict';
+
+const _ = require('lodash');
+const fs = require('fs-extra');
+const uglify = require('uglify-js');
+
+const uglifyOptions = require('./uglify.options');
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * 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 = destPath;
+    destPath = undefined;
+  }
+  if (!destPath) {
+    destPath = srcPath.replace(/(?=\.js$)/, '.min');
+  }
+  const output = uglify.minify(srcPath, _.defaults(options || {}, uglifyOptions));
+  fs.writeFile(destPath, output.code, 'utf-8', callback);
+}
+
+module.exports = minify;
--- a/lib/common/uglify.options.js
+++ b/lib/common/uglify.options.js
@@ -0,0 +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,
+    'warnings': false
+  },
+  'output': {
+    'ascii_only': true,
+    'comments': /@license/,
+    'max_line_len': 500
+  }
+};
--- a/lib/common/util.js
+++ b/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
+};
--- a/lib/fp/build-dist.js
+++ b/lib/fp/build-dist.js
@@ -0,0 +1,56 @@
+'use strict';
+
+const _ = require('lodash');
+const async = require('async');
+const path = require('path');
+const webpack = require('webpack');
+
+const file = require('../common/file');
+const util = require('../common/util');
+
+const basePath = path.join(__dirname, '..', '..');
+const distPath = path.join(basePath, 'dist');
+const fpPath = path.join(basePath, 'fp');
+const filename = 'lodash.fp.js';
+
+const fpConfig = {
+  'entry': path.join(fpPath, '_convertBrowser.js'),
+  'output': {
+    'path': distPath,
+    'filename': filename,
+    'library': 'fp',
+    'libraryTarget': 'umd'
+  },
+  'plugins': [
+    new webpack.optimize.OccurenceOrderPlugin,
+    new webpack.optimize.DedupePlugin
+  ]
+};
+
+const mappingConfig = {
+  'entry': path.join(fpPath, '_mapping.js'),
+  'output': {
+    'path': distPath,
+    'filename': 'mapping.fp.js',
+    'library': 'mapping',
+    'libraryTarget': 'umd'
+  }
+};
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * 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);
+}
+
+build();
--- a/lib/fp/build-doc.js
+++ b/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));
--- a/lib/fp/build-modules.js
+++ b/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));
--- a/lib/fp/template/doc/wiki.jst
+++ b/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.
--- a/lib/fp/template/modules/_falseOptions.jst
+++ b/lib/fp/template/modules/_falseOptions.jst
@@ -0,0 +1,7 @@
+module.exports = {
+  'cap': false,
+  'curry': false,
+  'fixed': false,
+  'immutable': false,
+  'rearg': false
+};
--- a/lib/fp/template/modules/_util.jst
+++ b/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')
+};
--- a/lib/fp/template/modules/alias.jst
+++ b/lib/fp/template/modules/alias.jst
@@ -0,0 +1 @@
+module.exports = require('./<%= name %>');
--- a/lib/fp/template/modules/category.jst
+++ b/lib/fp/template/modules/category.jst
@@ -0,0 +1,2 @@
+var convert = require('./convert');
+module.exports = convert(require('../<%= name %>'));
--- a/lib/fp/template/modules/convert.jst
+++ b/lib/fp/template/modules/convert.jst
@@ -0,0 +1,18 @@
+var baseConvert = require('./_baseConvert'),
+    util = require('./_util');
+
+/**
+ * Converts `func` of `name` to an immutable auto-curried iteratee-first data-last
+ * 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, options) {
+  return baseConvert(util, name, func, options);
+}
+
+module.exports = convert;
--- a/lib/fp/template/modules/fp.jst
+++ b/lib/fp/template/modules/fp.jst
@@ -0,0 +1,2 @@
+var _ = require('./lodash.min').runInContext();
+module.exports = require('./fp/_baseConvert')(_, _);
--- a/lib/fp/template/modules/module.jst
+++ b/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;
--- a/lib/fp/template/modules/thru.jst
+++ b/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;
--- a/lib/main/build-dist.js
+++ b/lib/main/build-dist.js
@@ -0,0 +1,31 @@
+'use strict';
+
+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 filename = 'lodash.js';
+
+const baseLodash = path.join(basePath, filename);
+const distLodash = path.join(distPath, filename);
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * 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);
+}
+
+build();
--- a/lib/main/build-doc.js
+++ b/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));
--- a/lib/main/build-modules.js
+++ b/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));
--- a/lib/main/build-site.js
+++ b/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();
--- a/lodash.js
+++ b/lodash.js
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -1,50 +1,66 @@
 {
  "name": "lodash",
-  "version": "5.0.0",
+  "version": "4.17.21",
  "license": "MIT",
  "private": true,
-  "main": "dist/lodash.js",
-  "sideEffects": false,
+  "main": "lodash.js",
+  "engines": {
+    "node": ">=4.0.0"
+  },
  "scripts": {
-    "prepare": "husky install",
-    "lint": "eslint ./src/**/*.ts"
+    "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": {
-    "@commitlint/cli": "17.7.1",
-    "@commitlint/config-conventional": "17.7.0",
-    "@types/eslint": "8.44.2",
-    "@types/jest": "29.5.5",
-    "@typescript-eslint/eslint-plugin": "6.7.0",
-    "@typescript-eslint/parser": "6.7.0",
-    "eslint": "8.49.0",
-    "eslint-config-airbnb-base": "15.0.0",
-    "eslint-config-airbnb-typescript": "17.1.0",
-    "eslint-config-prettier": "9.0.0",
-    "eslint-plugin-import": "2.28.1",
-    "eslint-plugin-prettier": "5.0.0",
-    "husky": "8.0.3",
-    "lint-staged": "14.0.1",
-    "lodash": "4.17.21",
-    "prettier": "3.0.3"
+    "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"
  },
-  "lint-staged": {
-    "src/**/*.{ts}": [
-      "eslint --fix"
+  "greenkeeper": {
+    "ignore": [
+      "lodash"
    ]
-  },
-  "husky": {
-    "hooks": {
-      "pre-commit": "lint-staged",
-      "commit-msg": "bun run commitlint --edit $1"
-    }
-  },
-  "engines": {
-    "node": "^18.17.1",
-    "yarn": "^1.22.19"
-  },
-  "volta": {
-    "node": "18.17.1",
-    "yarn": "1.22.19"
-  },
-  "engineStrict": true
+  }
 }
--- a/perf/asset/perf-ui.js
+++ b/perf/asset/perf-ui.js
@@ -0,0 +1,112 @@
+;(function(window) {
+  'use strict';
+
+  /** The base path of the lodash builds. */
+  var basePath = '../';
+
+  /** The lodash build to load. */
+  var build = (build = /build=([^&]+)/.exec(location.search)) && decodeURIComponent(build[1]);
+
+  /** The other library to load. */
+  var other = (other = /other=([^&]+)/.exec(location.search)) && decodeURIComponent(other[1]);
+
+  /** The `ui` object. */
+  var ui = {};
+
+  /*--------------------------------------------------------------------------*/
+
+  // Initialize controls.
+  addEventListener('load', function() {
+    function eventHandler(event) {
+      var buildIndex = buildList.selectedIndex,
+          otherIndex = otherList.selectedIndex,
+          search = location.search.replace(/^\?|&?(?:build|other)=[^&]*&?/g, '');
+
+      if (event.stopPropagation) {
+        event.stopPropagation();
+      } else {
+        event.cancelBubble = true;
+      }
+      location.href =
+        location.href.split('?')[0] + '?' +
+        (search ? search + '&' : '') +
+        'build=' + (buildIndex < 0 ? build : buildList[buildIndex].value) + '&' +
+        'other=' + (otherIndex < 0 ? other : otherList[otherIndex].value);
+    }
+
+    var span1 = document.createElement('span');
+    span1.style.cssText = 'float:right';
+    span1.innerHTML =
+      '<label for="perf-build">Build: </label>' +
+      '<select id="perf-build">' +
+      '<option value="lodash">lodash (production)</option>' +
+      '</select>';
+
+    var span2 = document.createElement('span');
+    span2.style.cssText = 'float:right';
+    span2.innerHTML =
+      '<label for="perf-other">Other Library: </label>' +
+      '<select id="perf-other">' +
+      '<option value="underscore-dev">Underscore (development)</option>' +
+      '<option value="underscore">Underscore (production)</option>' +
+      '<option value="lodash">lodash</option>' +
+      '</select>';
+
+    var buildList = span1.lastChild,
+        otherList = span2.lastChild,
+        toolbar = document.getElementById('perf-toolbar');
+
+    toolbar.appendChild(span2);
+    toolbar.appendChild(span1);
+
+    buildList.selectedIndex = (function() {
+      switch (build) {
+        case 'lodash':
+        case null:                return 0;
+      }
+      return -1;
+    }());
+
+    otherList.selectedIndex = (function() {
+      switch (other) {
+        case 'underscore-dev':    return 0;
+        case 'lodash':            return 2;
+        case 'underscore':
+        case null:                return 1;
+      }
+      return -1;
+    }());
+
+    buildList.addEventListener('change', eventHandler);
+    otherList.addEventListener('change', eventHandler);
+  });
+
+  // The lodash build file path.
+  ui.buildPath = (function() {
+    var result;
+    switch (build) {
+      case null:                build  = 'lodash';
+      case 'lodash':            result = 'dist/lodash.min.js'; break;
+      default:                  return build;
+    }
+    return basePath + result;
+  }());
+
+  // The other library file path.
+  ui.otherPath = (function() {
+    var result;
+    switch (other) {
+      case 'lodash':            result = 'dist/lodash.min.js'; break;
+      case 'underscore-dev':    result = 'vendor/underscore/underscore.js'; break;
+      case null:                other  = 'underscore';
+      case 'underscore':        result = 'vendor/underscore/underscore-min.js'; break;
+      default:                  return other;
+    }
+    return basePath + result;
+  }());
+
+  ui.urlParams = { 'build': build, 'other': other };
+
+  window.ui = ui;
+
+}(this));
--- a/perf/index.html
+++ b/perf/index.html
@@ -0,0 +1,80 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>lodash Performance Suite</title>
+    <style>
+      html, body {
+        margin: 0;
+        padding: 0;
+        height: 100%;
+      }
+      #FirebugUI {
+        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 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="../lodash.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>
+      document.write('<script src="' + ui.buildPath + '"><\/script>');
+    </script>
+    <script>
+      var lodash = _.noConflict();
+    </script>
+    <script>
+      document.write('<script src="' + ui.otherPath + '"><\/script>');
+    </script>
+    <script src="perf.js"></script>
+    <script>
+      (function() {
+        var measured,
+            perfNow,
+            begin = new Date;
+
+        function init() {
+          var fbUI = document.getElementById('FirebugUI'),
+              fbDoc = fbUI && (fbDoc = fbUI.contentWindow || fbUI.contentDocument).document || fbDoc,
+              fbCommandLine = fbDoc && fbDoc.getElementById('fbCommandLine');
+
+          if (!fbCommandLine) {
+            return setTimeout(init, 15);
+          }
+          fbUI.style.height = (
+            Math.max(document.documentElement.clientHeight, document.body.clientHeight) -
+            document.getElementById('perf-toolbar').clientHeight
+          ) + 'px';
+
+          fbDoc.body.style.height = fbDoc.documentElement.style.height = '100%';
+          setTimeout(run, 15);
+        }
+
+        window.onload = init;
+      }());
+    </script>
+  </body>
+</html>
--- a/perf/perf.js
+++ b/perf/perf.js
--- a/src/.eslintrc.cjs
+++ b/src/.eslintrc.cjs
@@ -1,18 +0,0 @@
-'use strict';
-
-const path = require('node:path');
-
-module.exports = {
-    overrides: [
-        {
-            files: ['**/*.{ts}'],
-            rules: {
-                'import/no-extraneous-dependencies': [
-                    'error',
-                    // Use package.json from both this package folder and root.
-                    { packageDir: [__dirname, path.join(__dirname, '../')] },
-                ],
-            },
-        },
-    ],
-};
--- a/src/.internal/Hash.ts
+++ b/src/.internal/Hash.ts
@@ -1,88 +0,0 @@
-/** Used to stand-in for `undefined` hash values. */
-const HASH_UNDEFINED = '__lodash_hash_undefined__'
-
-class Hash {
-
-  /**
-   * Creates a hash object.
-   *
-   * @private
-   * @constructor
-   * @param {Array} [entries] The key-value pairs to cache.
-   */
-  constructor(entries) {
-    let index = -1
-    const length = entries == null ? 0 : entries.length
-
-    this.clear()
-    while (++index < length) {
-      const entry = entries[index]
-      this.set(entry[0], entry[1])
-    }
-  }
-
-  /**
-   * Removes all key-value entries from the hash.
-   *
-   * @memberOf Hash
-   */
-  clear() {
-    this.__data__ = Object.create(null)
-    this.size = 0
-  }
-
-  /**
-   * Removes `key` and its value from the hash.
-   *
-   * @memberOf Hash
-   * @param {string} key The key of the value to remove.
-   * @returns {boolean} Returns `true` if the entry was removed, else `false`.
-   */
-  delete(key) {
-    const result = this.has(key) && delete this.__data__[key]
-    this.size -= result ? 1 : 0
-    return result
-  }
-
-  /**
-   * Gets the hash value for `key`.
-   *
-   * @memberOf Hash
-   * @param {string} key The key of the value to get.
-   * @returns {*} Returns the entry value.
-   */
-  get(key) {
-    const data = this.__data__
-    const result = data[key]
-    return result === HASH_UNDEFINED ? undefined : result
-  }
-
-  /**
-   * Checks if a hash value for `key` exists.
-   *
-   * @memberOf Hash
-   * @param {string} key The key of the entry to check.
-   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
-   */
-  has(key) {
-    const data = this.__data__
-    return data[key] !== undefined
-  }
-
-  /**
-   * Sets the hash `key` to `value`.
-   *
-   * @memberOf Hash
-   * @param {string} key The key of the value to set.
-   * @param {*} value The value to set.
-   * @returns {Object} Returns the hash instance.
-   */
-  set(key, value) {
-    const data = this.__data__
-    this.size += this.has(key) ? 0 : 1
-    data[key] = value === undefined ? HASH_UNDEFINED : value
-    return this
-  }
-}
-
-export default Hash
--- a/src/.internal/ListCache.ts
+++ b/src/.internal/ListCache.ts
@@ -1,103 +0,0 @@
-import assocIndexOf from './assocIndexOf.js'
-
-class ListCache {
-
-  /**
-   * Creates an list cache object.
-   *
-   * @private
-   * @constructor
-   * @param {Array} [entries] The key-value pairs to cache.
-   */
-  constructor(entries) {
-    let index = -1
-    const length = entries == null ? 0 : entries.length
-
-    this.clear()
-    while (++index < length) {
-      const entry = entries[index]
-      this.set(entry[0], entry[1])
-    }
-  }
-
-  /**
-   * Removes all key-value entries from the list cache.
-   *
-   * @memberOf ListCache
-   */
-  clear() {
-    this.__data__ = []
-    this.size = 0
-  }
-
-  /**
-   * Removes `key` and its value from the list cache.
-   *
-   * @memberOf ListCache
-   * @param {string} key The key of the value to remove.
-   * @returns {boolean} Returns `true` if the entry was removed, else `false`.
-   */
-  delete(key) {
-    const data = this.__data__
-    const index = assocIndexOf(data, key)
-
-    if (index < 0) {
-      return false
-    }
-    const lastIndex = data.length - 1
-    if (index === lastIndex) {
-      data.pop()
-    } else {
-      data.splice(index, 1)
-    }
-    --this.size
-    return true
-  }
-
-  /**
-   * Gets the list cache value for `key`.
-   *
-   * @memberOf ListCache
-   * @param {string} key The key of the value to get.
-   * @returns {*} Returns the entry value.
-   */
-  get(key) {
-    const data = this.__data__
-    const index = assocIndexOf(data, key)
-    return index < 0 ? undefined : data[index][1]
-  }
-
-  /**
-   * Checks if a list cache value for `key` exists.
-   *
-   * @memberOf ListCache
-   * @param {string} key The key of the entry to check.
-   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
-   */
-  has(key) {
-    return assocIndexOf(this.__data__, key) > -1
-  }
-
-  /**
-   * Sets the list cache `key` to `value`.
-   *
-   * @memberOf ListCache
-   * @param {string} key The key of the value to set.
-   * @param {*} value The value to set.
-   * @returns {Object} Returns the list cache instance.
-   */
-  set(key, value) {
-    const data = this.__data__
-    const index = assocIndexOf(data, key)
-
-    if (index < 0) {
-      ++this.size
-      data.push([key, value])
-    } else {
-      data[index][1] = value
-    }
-    return this
-  }
-}
-
-export default ListCache
--- a/src/.internal/MapCache.ts
+++ b/src/.internal/MapCache.ts
@@ -1,120 +0,0 @@
-
-import Hash from './Hash.js'
-
-/**
- * Gets the data for `map`.
- *
- * @private
- * @param {Object} map The map to query.
- * @param {string} key The reference key.
- * @returns {*} Returns the map data.
- */
-function getMapData({ __data__ }, key) {
-  const data = __data__
-  return isKeyable(key)
-    ? data[typeof key === 'string' ? 'string' : 'hash']
-    : data.map
-}
-
-/**
- * Checks if `value` is suitable for use as unique object key.
- *
- * @private
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
- */
-function isKeyable(value) {
-  const type = typeof value
-  return (type === 'string' || type === 'number' || type === 'symbol' || type === 'boolean')
-    ? (value !== '__proto__')
-    : (value === null)
-}
-
-class MapCache {
-
-  /**
-   * Creates a map cache object to store key-value pairs.
-   *
-   * @private
-   * @constructor
-   * @param {Array} [entries] The key-value pairs to cache.
-   */
-  constructor(entries) {
-    let index = -1
-    const length = entries == null ? 0 : entries.length
-
-    this.clear()
-    while (++index < length) {
-      const entry = entries[index]
-      this.set(entry[0], entry[1])
-    }
-  }
-
-  /**
-   * Removes all key-value entries from the map.
-   *
-   * @memberOf MapCache
-   */
-  clear() {
-    this.size = 0
-    this.__data__ = {
-      'hash': new Hash,
-      'map': new Map,
-      'string': new Hash
-    }
-  }
-
-  /**
-   * Removes `key` and its value from the map.
-   *
-   * @memberOf MapCache
-   * @param {string} key The key of the value to remove.
-   * @returns {boolean} Returns `true` if the entry was removed, else `false`.
-   */
-  delete(key) {
-    const result = getMapData(this, key)['delete'](key)
-    this.size -= result ? 1 : 0
-    return result
-  }
-
-  /**
-   * Gets the map value for `key`.
-   *
-   * @memberOf MapCache
-   * @param {string} key The key of the value to get.
-   * @returns {*} Returns the entry value.
-   */
-  get(key) {
-    return getMapData(this, key).get(key)
-  }
-
-  /**
-   * Checks if a map value for `key` exists.
-   *
-   * @memberOf MapCache
-   * @param {string} key The key of the entry to check.
-   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
-   */
-  has(key) {
-    return getMapData(this, key).has(key)
-  }
-
-  /**
-   * Sets the map `key` to `value`.
-   *
-   * @memberOf MapCache
-   * @param {string} key The key of the value to set.
-   * @param {*} value The value to set.
-   * @returns {Object} Returns the map cache instance.
-   */
-  set(key, value) {
-    const data = getMapData(this, key)
-    const size = data.size
-
-    data.set(key, value)
-    this.size += data.size === size ? 0 : 1
-    return this
-  }
-}
-
-export default MapCache
--- a/src/.internal/SetCache.ts
+++ b/src/.internal/SetCache.ts
@@ -1,52 +0,0 @@
-import MapCache from './MapCache.js'
-
-/** Used to stand-in for `undefined` hash values. */
-const HASH_UNDEFINED = '__lodash_hash_undefined__'
-
-class SetCache {
-
-  /**
-   * Creates an array cache object to store unique values.
-   *
-   * @private
-   * @constructor
-   * @param {Array} [values] The values to cache.
-   */
-  constructor(values) {
-    let index = -1
-    const length = values == null ? 0 : values.length
-
-    this.__data__ = new MapCache
-    while (++index < length) {
-      this.add(values[index])
-    }
-  }
-
-  /**
-   * Adds `value` to the array cache.
-   *
-   * @memberOf SetCache
-   * @alias push
-   * @param {*} value The value to cache.
-   * @returns {Object} Returns the cache instance.
-   */
-  add(value) {
-    this.__data__.set(value, HASH_UNDEFINED)
-    return this
-  }
-
-  /**
-   * Checks if `value` is in the array cache.
-   *
-   * @memberOf SetCache
-   * @param {*} value The value to search for.
-   * @returns {boolean} Returns `true` if `value` is found, else `false`.
-   */
-  has(value) {
-    return this.__data__.has(value)
-  }
-}
-
-SetCache.prototype.push = SetCache.prototype.add
-
-export default SetCache
--- a/src/.internal/Stack.ts
+++ b/src/.internal/Stack.ts
@@ -1,93 +0,0 @@
-import ListCache from './ListCache.js'
-import MapCache from './MapCache.js'
-
-/** Used as the size to enable large array optimizations. */
-const LARGE_ARRAY_SIZE = 200
-
-class Stack {
-
-  /**
-   * Creates a stack cache object to store key-value pairs.
-   *
-   * @private
-   * @constructor
-   * @param {Array} [entries] The key-value pairs to cache.
-   */
-  constructor(entries) {
-    const data = this.__data__ = new ListCache(entries)
-    this.size = data.size
-  }
-
-  /**
-   * Removes all key-value entries from the stack.
-   *
-   * @memberOf Stack
-   */
-  clear() {
-    this.__data__ = new ListCache
-    this.size = 0
-  }
-
-  /**
-   * Removes `key` and its value from the stack.
-   *
-   * @memberOf Stack
-   * @param {string} key The key of the value to remove.
-   * @returns {boolean} Returns `true` if the entry was removed, else `false`.
-   */
-  delete(key) {
-    const data = this.__data__
-    const result = data['delete'](key)
-
-    this.size = data.size
-    return result
-  }
-
-  /**
-   * Gets the stack value for `key`.
-   *
-   * @memberOf Stack
-   * @param {string} key The key of the value to get.
-   * @returns {*} Returns the entry value.
-   */
-  get(key) {
-    return this.__data__.get(key)
-  }
-
-  /**
-   * Checks if a stack value for `key` exists.
-   *
-   * @memberOf Stack
-   * @param {string} key The key of the entry to check.
-   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
-   */
-  has(key) {
-    return this.__data__.has(key)
-  }
-
-  /**
-   * Sets the stack `key` to `value`.
-   *
-   * @memberOf Stack
-   * @param {string} key The key of the value to set.
-   * @param {*} value The value to set.
-   * @returns {Object} Returns the stack cache instance.
-   */
-  set(key, value) {
-    let data = this.__data__
-    if (data instanceof ListCache) {
-      const pairs = data.__data__
-      if (pairs.length < LARGE_ARRAY_SIZE - 1) {
-        pairs.push([key, value])
-        this.size = ++data.size
-        return this
-      }
-      data = this.__data__ = new MapCache(pairs)
-    }
-    data.set(key, value)
-    this.size = data.size
-    return this
-  }
-}
-
-export default Stack
--- a/src/.internal/addMapEntry.ts
+++ b/src/.internal/addMapEntry.ts
@@ -1,15 +0,0 @@
-/**
- * Adds the key-value `pair` to `map`.
- *
- * @private
- * @param {Object} map The map to modify.
- * @param {Array} pair The key-value pair to add.
- * @returns {Object} Returns `map`.
- */
-function addMapEntry(map, pair) {
-  // Don't return `map.set` because it's not chainable in IE 11.
-  map.set(pair[0], pair[1])
-  return map
-}
-
-export default addMapEntry
--- a/src/.internal/addSetEntry.ts
+++ b/src/.internal/addSetEntry.ts
@@ -1,15 +0,0 @@
-/**
- * Adds `value` to `set`.
- *
- * @private
- * @param {Object} set The set to modify.
- * @param {*} value The value to add.
- * @returns {Object} Returns `set`.
- */
-function addSetEntry(set, value) {
-  // Don't return `set.add` because it's not chainable in IE 11.
-  set.add(value)
-  return set
-}
-
-export default addSetEntry
--- a/src/.internal/arrayEach.ts
+++ b/src/.internal/arrayEach.ts
@@ -1,21 +0,0 @@
-/**
- * A specialized version of `forEach` for arrays.
- *
- * @private
- * @param {Array} [array] The array to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @returns {Array} Returns `array`.
- */
-function arrayEach(array, iteratee) {
-  let index = -1
-  const length = array.length
-
-  while (++index < length) {
-    if (iteratee(array[index], index, array) === false) {
-      break
-    }
-  }
-  return array
-}
-
-export default arrayEach
--- a/src/.internal/arrayEachRight.ts
+++ b/src/.internal/arrayEachRight.ts
@@ -1,20 +0,0 @@
-/**
- * A specialized version of `forEachRight` for arrays.
- *
- * @private
- * @param {Array} [array] The array to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @returns {Array} Returns `array`.
- */
-function arrayEachRight(array, iteratee) {
-  let length = array == null ? 0 : array.length
-
-  while (length--) {
-    if (iteratee(array[length], length, array) === false) {
-      break
-    }
-  }
-  return array
-}
-
-export default arrayEachRight
--- a/src/.internal/arrayIncludes.ts
+++ b/src/.internal/arrayIncludes.ts
@@ -1,17 +0,0 @@
-import baseIndexOf from './baseIndexOf.js'
-
-/**
- * A specialized version of `includes` for arrays without support for
- * specifying an index to search from.
- *
- * @private
- * @param {Array} [array] The array to inspect.
- * @param {*} target The value to search for.
- * @returns {boolean} Returns `true` if `target` is found, else `false`.
- */
-function arrayIncludes(array, value) {
-  const length = array == null ? 0 : array.length
-  return !!length && baseIndexOf(array, value, 0) > -1
-}
-
-export default arrayIncludes
--- a/src/.internal/arrayIncludesWith.ts
+++ b/src/.internal/arrayIncludesWith.ts
@@ -1,23 +0,0 @@
-/**
- * This function is like `arrayIncludes` except that it accepts a comparator.
- *
- * @private
- * @param {Array} [array] The array to inspect.
- * @param {*} target The value to search for.
- * @param {Function} comparator The comparator invoked per element.
- * @returns {boolean} Returns `true` if `target` is found, else `false`.
- */
-function arrayIncludesWith(array, target, comparator) {
-  if (array == null) {
-    return false
-  }
-
-  for (const value of array) {
-    if (comparator(target, value)) {
-      return true
-    }
-  }
-  return false
-}
-
-export default arrayIncludesWith
--- a/src/.internal/arrayLikeKeys.ts
+++ b/src/.internal/arrayLikeKeys.ts
@@ -1,43 +0,0 @@
-import isArguments from '../isArguments.js'
-import isBuffer from '../isBuffer.js'
-import isIndex from './isIndex.js'
-import isTypedArray from '../isTypedArray.js'
-
-/** Used to check objects for own properties. */
-const hasOwnProperty = Object.prototype.hasOwnProperty
-
-/**
- * Creates an array of the enumerable property names of the array-like `value`.
- *
- * @private
- * @param {*} value The value to query.
- * @param {boolean} inherited Specify returning inherited property names.
- * @returns {Array} Returns the array of property names.
- */
-function arrayLikeKeys(value, inherited) {
-  const isArr = Array.isArray(value)
-  const isArg = !isArr && isArguments(value)
-  const isBuff = !isArr && !isArg && isBuffer(value)
-  const isType = !isArr && !isArg && !isBuff && isTypedArray(value)
-  const skipIndexes = isArr || isArg || isBuff || isType
-  const length = value.length
-  const result = new Array(skipIndexes ? length : 0)
-  let index = skipIndexes ? -1 : length
-  while (++index < length) {
-    result[index] = `${index}`
-  }
-  for (const key in value) {
-    if ((inherited || hasOwnProperty.call(value, key)) &&
-        !(skipIndexes && (
-        // Safari 9 has enumerable `arguments.length` in strict mode.
-          (key === 'length' ||
-           // Skip index properties.
-           isIndex(key, length))
-        ))) {
-      result.push(key)
-    }
-  }
-  return result
-}
-
-export default arrayLikeKeys
--- a/src/.internal/arrayReduce.ts
+++ b/src/.internal/arrayReduce.ts
@@ -1,25 +0,0 @@
-/**
- * A specialized version of `reduce` for arrays.
- *
- * @private
- * @param {Array} [array] The array to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @param {*} [accumulator] The initial value.
- * @param {boolean} [initAccum] Specify using the first element of `array` as
- *  the initial value.
- * @returns {*} Returns the accumulated value.
- */
-function arrayReduce(array, iteratee, accumulator, initAccum) {
-  let index = -1
-  const length = array == null ? 0 : array.length
-
-  if (initAccum && length) {
-    accumulator = array[++index]
-  }
-  while (++index < length) {
-    accumulator = iteratee(accumulator, array[index], index, array)
-  }
-  return accumulator
-}
-
-export default arrayReduce
--- a/src/.internal/arrayReduceRight.ts
+++ b/src/.internal/arrayReduceRight.ts
@@ -1,23 +0,0 @@
-/**
- * A specialized version of `reduceRight` for arrays.
- *
- * @private
- * @param {Array} [array] The array to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @param {*} [accumulator] The initial value.
- * @param {boolean} [initAccum] Specify using the last element of `array` as
- *  the initial value.
- * @returns {*} Returns the accumulated value.
- */
-function arrayReduceRight(array, iteratee, accumulator, initAccum) {
-  let length = array == null ? 0 : array.length
-  if (initAccum && length) {
-    accumulator = array[--length]
-  }
-  while (length--) {
-    accumulator = iteratee(accumulator, array[length], length, array)
-  }
-  return accumulator
-}
-
-export default arrayReduceRight
--- a/src/.internal/asciiSize.ts
+++ b/src/.internal/asciiSize.ts
@@ -1,12 +0,0 @@
-/**
- * Gets the size of an ASCII `string`.
- *
- * @private
- * @param {string} string The string inspect.
- * @returns {number} Returns the string size.
- */
-function asciiSize({ length }) {
-  return length
-}
-
-export default asciiSize
--- a/src/.internal/asciiToArray.ts
+++ b/src/.internal/asciiToArray.ts
@@ -1,12 +0,0 @@
-/**
- * Converts an ASCII `string` to an array.
- *
- * @private
- * @param {string} string The string to convert.
- * @returns {Array} Returns the converted array.
- */
-function asciiToArray(string) {
-  return string.split('')
-}
-
-export default asciiToArray
--- a/src/.internal/assignMergeValue.ts
+++ b/src/.internal/assignMergeValue.ts
@@ -1,20 +0,0 @@
-import baseAssignValue from './baseAssignValue.js'
-import eq from '../eq.js'
-
-/**
- * This function is like `assignValue` except that it doesn't assign
- * `undefined` values.
- *
- * @private
- * @param {Object} object The object to modify.
- * @param {string} key The key of the property to assign.
- * @param {*} value The value to assign.
- */
-function assignMergeValue(object, key, value) {
-  if ((value !== undefined && !eq(object[key], value)) ||
-      (value === undefined && !(key in object))) {
-    baseAssignValue(object, key, value)
-  }
-}
-
-export default assignMergeValue
--- a/src/.internal/assignValue.ts
+++ b/src/.internal/assignValue.ts
@@ -1,27 +0,0 @@
-import baseAssignValue from './baseAssignValue.js'
-import eq from '../eq.js'
-
-/** Used to check objects for own properties. */
-const hasOwnProperty = Object.prototype.hasOwnProperty
-
-/**
- * Assigns `value` to `key` of `object` if the existing value is not equivalent.
- *
- * @private
- * @param {Object} object The object to modify.
- * @param {string} key The key of the property to assign.
- * @param {*} value The value to assign.
- */
-function assignValue(object, key, value) {
-  const objValue = object[key]
-
-  if (!(hasOwnProperty.call(object, key) && eq(objValue, value))) {
-    if (value !== 0 || (1 / value) === (1 / objValue)) {
-      baseAssignValue(object, key, value)
-    }
-  } else if (value === undefined && !(key in object)) {
-    baseAssignValue(object, key, value)
-  }
-}
-
-export default assignValue
--- a/src/.internal/assocIndexOf.ts
+++ b/src/.internal/assocIndexOf.ts
@@ -1,21 +0,0 @@
-import eq from '../eq.js'
-
-/**
- * Gets the index at which the `key` is found in `array` of key-value pairs.
- *
- * @private
- * @param {Array} array The array to inspect.
- * @param {*} key The key to search for.
- * @returns {number} Returns the index of the matched value, else `-1`.
- */
-function assocIndexOf(array, key) {
-  let { length } = array
-  while (length--) {
-    if (eq(array[length][0], key)) {
-      return length
-    }
-  }
-  return -1
-}
-
-export default assocIndexOf
--- a/src/.internal/baseAssignValue.ts
+++ b/src/.internal/baseAssignValue.ts
@@ -1,23 +0,0 @@
-/**
- * The base implementation of `assignValue` and `assignMergeValue` without
- * value checks.
- *
- * @private
- * @param {Object} object The object to modify.
- * @param {string} key The key of the property to assign.
- * @param {*} value The value to assign.
- */
-function baseAssignValue(object, key, value) {
-  if (key === '__proto__') {
-    Object.defineProperty(object, key, {
-      'configurable': true,
-      'enumerable': true,
-      'value': value,
-      'writable': true
-    })
-  } else {
-    object[key] = value
-  }
-}
-
-export default baseAssignValue
--- a/src/.internal/baseAt.ts
+++ b/src/.internal/baseAt.ts
@@ -1,23 +0,0 @@
-import get from '../get.js'
-
-/**
- * The base implementation of `at` without support for individual paths.
- *
- * @private
- * @param {Object} object The object to iterate over.
- * @param {string[]} paths The property paths to pick.
- * @returns {Array} Returns the picked elements.
- */
-function baseAt(object, paths) {
-  let index = -1
-  const length = paths.length
-  const result = new Array(length)
-  const skip = object == null
-
-  while (++index < length) {
-    result[index] = skip ? undefined : get(object, paths[index])
-  }
-  return result
-}
-
-export default baseAt
--- a/src/.internal/baseClone.ts
+++ b/src/.internal/baseClone.ts
@@ -1,241 +0,0 @@
-import Stack from './Stack.js'
-import arrayEach from './arrayEach.js'
-import assignValue from './assignValue.js'
-import cloneBuffer from './cloneBuffer.js'
-import copyArray from './copyArray.js'
-import copyObject from './copyObject.js'
-import cloneArrayBuffer from './cloneArrayBuffer.js'
-import cloneDataView from './cloneDataView.js'
-import cloneRegExp from './cloneRegExp.js'
-import cloneSymbol from './cloneSymbol.js'
-import cloneTypedArray from './cloneTypedArray.js'
-import copySymbols from './copySymbols.js'
-import copySymbolsIn from './copySymbolsIn.js'
-import getAllKeys from './getAllKeys.js'
-import getAllKeysIn from './getAllKeysIn.js'
-import getTag from './getTag.js'
-import initCloneObject from './initCloneObject.js'
-import isBuffer from '../isBuffer.js'
-import isObject from '../isObject.js'
-import isTypedArray from '../isTypedArray.js'
-import keys from '../keys.js'
-import keysIn from '../keysIn.js'
-
-/** Used to compose bitmasks for cloning. */
-const CLONE_DEEP_FLAG = 1
-const CLONE_FLAT_FLAG = 2
-const CLONE_SYMBOLS_FLAG = 4
-
-/** `Object#toString` result references. */
-const argsTag = '[object Arguments]'
-const arrayTag = '[object Array]'
-const boolTag = '[object Boolean]'
-const dateTag = '[object Date]'
-const errorTag = '[object Error]'
-const mapTag = '[object Map]'
-const numberTag = '[object Number]'
-const objectTag = '[object Object]'
-const regexpTag = '[object RegExp]'
-const setTag = '[object Set]'
-const stringTag = '[object String]'
-const symbolTag = '[object Symbol]'
-const weakMapTag = '[object WeakMap]'
-
-const arrayBufferTag = '[object ArrayBuffer]'
-const dataViewTag = '[object DataView]'
-const float32Tag = '[object Float32Array]'
-const float64Tag = '[object Float64Array]'
-const int8Tag = '[object Int8Array]'
-const int16Tag = '[object Int16Array]'
-const int32Tag = '[object Int32Array]'
-const uint8Tag = '[object Uint8Array]'
-const uint8ClampedTag = '[object Uint8ClampedArray]'
-const uint16Tag = '[object Uint16Array]'
-const uint32Tag = '[object Uint32Array]'
-
-/** Used to identify `toStringTag` values supported by `clone`. */
-const cloneableTags = {}
-cloneableTags[argsTag] = cloneableTags[arrayTag] =
-cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
-cloneableTags[boolTag] = cloneableTags[dateTag] =
-cloneableTags[float32Tag] = cloneableTags[float64Tag] =
-cloneableTags[int8Tag] = cloneableTags[int16Tag] =
-cloneableTags[int32Tag] = cloneableTags[mapTag] =
-cloneableTags[numberTag] = cloneableTags[objectTag] =
-cloneableTags[regexpTag] = cloneableTags[setTag] =
-cloneableTags[stringTag] = cloneableTags[symbolTag] =
-cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
-cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true
-cloneableTags[errorTag] = cloneableTags[weakMapTag] = false
-
-/** Used to check objects for own properties. */
-const hasOwnProperty = Object.prototype.hasOwnProperty
-
-/**
- * Initializes an object clone based on its `toStringTag`.
- *
- * **Note:** This function only supports cloning values with tags of
- * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
- *
- * @private
- * @param {Object} object The object to clone.
- * @param {string} tag The `toStringTag` of the object to clone.
- * @param {boolean} [isDeep] Specify a deep clone.
- * @returns {Object} Returns the initialized clone.
- */
-function initCloneByTag(object, tag, isDeep) {
-  const Ctor = object.constructor
-  switch (tag) {
-    case arrayBufferTag:
-      return cloneArrayBuffer(object)
-
-    case boolTag:
-    case dateTag:
-      return new Ctor(+object)
-
-    case dataViewTag:
-      return cloneDataView(object, isDeep)
-
-    case float32Tag: case float64Tag:
-    case int8Tag: case int16Tag: case int32Tag:
-    case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
-      return cloneTypedArray(object, isDeep)
-
-    case mapTag:
-      return new Ctor
-
-    case numberTag:
-    case stringTag:
-      return new Ctor(object)
-
-    case regexpTag:
-      return cloneRegExp(object)
-
-    case setTag:
-      return new Ctor
-
-    case symbolTag:
-      return cloneSymbol(object)
-  }
-}
-
-/**
- * Initializes an array clone.
- *
- * @private
- * @param {Array} array The array to clone.
- * @returns {Array} Returns the initialized clone.
- */
-function initCloneArray(array) {
-  const { length } = array
-  const result = new array.constructor(length)
-
-  // Add properties assigned by `RegExp#exec`.
-  if (length && typeof array[0] === 'string' && hasOwnProperty.call(array, 'index')) {
-    result.index = array.index
-    result.input = array.input
-  }
-  return result
-}
-
-/**
- * The base implementation of `clone` and `cloneDeep` which tracks
- * traversed objects.
- *
- * @private
- * @param {*} value The value to clone.
- * @param {number} bitmask The bitmask flags.
- *  1 - Deep clone
- *  2 - Flatten inherited properties
- *  4 - Clone symbols
- * @param {Function} [customizer] The function to customize cloning.
- * @param {string} [key] The key of `value`.
- * @param {Object} [object] The parent object of `value`.
- * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
- * @returns {*} Returns the cloned value.
- */
-function baseClone(value, bitmask, customizer, key, object, stack) {
-  let result
-  const isDeep = bitmask & CLONE_DEEP_FLAG
-  const isFlat = bitmask & CLONE_FLAT_FLAG
-  const isFull = bitmask & CLONE_SYMBOLS_FLAG
-
-  if (customizer) {
-    result = object ? customizer(value, key, object, stack) : customizer(value)
-  }
-  if (result !== undefined) {
-    return result
-  }
-  if (!isObject(value)) {
-    return value
-  }
-  const isArr = Array.isArray(value)
-  const tag = getTag(value)
-  if (isArr) {
-    result = initCloneArray(value)
-    if (!isDeep) {
-      return copyArray(value, result)
-    }
-  } else {
-    const isFunc = typeof value === 'function'
-
-    if (isBuffer(value)) {
-      return cloneBuffer(value, isDeep)
-    }
-    if (tag === objectTag || tag === argsTag || (isFunc && !object)) {
-      result = (isFlat || isFunc) ? {} : initCloneObject(value)
-      if (!isDeep) {
-        return isFlat
-          ? copySymbolsIn(value, copyObject(value, keysIn(value), result))
-          : copySymbols(value, Object.assign(result, value))
-      }
-    } else {
-      if (isFunc || !cloneableTags[tag]) {
-        return object ? value : {}
-      }
-      result = initCloneByTag(value, tag, isDeep)
-    }
-  }
-  // Check for circular references and return its corresponding clone.
-  stack || (stack = new Stack)
-  const stacked = stack.get(value)
-  if (stacked) {
-    return stacked
-  }
-  stack.set(value, result)
-
-  if (tag === mapTag) {
-    value.forEach((subValue, key) => {
-      result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack))
-    })
-    return result
-  }
-
-  if (tag === setTag) {
-    value.forEach((subValue) => {
-      result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack))
-    })
-    return result
-  }
-
-  if (isTypedArray(value)) {
-    return result
-  }
-
-  const keysFunc = isFull
-    ? (isFlat ? getAllKeysIn : getAllKeys)
-    : (isFlat ? keysIn : keys)
-
-  const props = isArr ? undefined : keysFunc(value)
-  arrayEach(props || value, (subValue, key) => {
-    if (props) {
-      key = subValue
-      subValue = value[key]
-    }
-    // Recursively populate clone (susceptible to call stack limits).
-    assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack))
-  })
-  return result
-}
-
-export default baseClone
--- a/src/.internal/baseConforms.ts
+++ b/src/.internal/baseConforms.ts
@@ -1,16 +0,0 @@
-import baseConformsTo from './baseConformsTo.js'
-import keys from '../keys.js'
-
-/**
- * The base implementation of `conforms` which doesn't clone `source`.
- *
- * @private
- * @param {Object} source The object of property predicates to conform to.
- * @returns {Function} Returns the new spec function.
- */
-function baseConforms(source) {
-  const props = keys(source)
-  return (object) => baseConformsTo(object, source, props)
-}
-
-export default baseConforms
--- a/src/.internal/baseConformsTo.ts
+++ b/src/.internal/baseConformsTo.ts
@@ -1,27 +0,0 @@
-/**
- * The base implementation of `conformsTo` which accepts `props` to check.
- *
- * @private
- * @param {Object} object The object to inspect.
- * @param {Object} source The object of property predicates to conform to.
- * @returns {boolean} Returns `true` if `object` conforms, else `false`.
- */
-function baseConformsTo(object, source, props) {
-  let length = props.length
-  if (object == null) {
-    return !length
-  }
-  object = Object(object)
-  while (length--) {
-    const key = props[length]
-    const predicate = source[key]
-    const value = object[key]
-
-    if ((value === undefined && !(key in object)) || !predicate(value)) {
-      return false
-    }
-  }
-  return true
-}
-
-export default baseConformsTo
--- a/src/.internal/baseDifference.ts
+++ b/src/.internal/baseDifference.ts
@@ -1,63 +0,0 @@
-import SetCache from './SetCache.js'
-import arrayIncludes from './arrayIncludes.js'
-import arrayIncludesWith from './arrayIncludesWith.js'
-import map from '../map.js'
-import cacheHas from './cacheHas.js'
-
-/** Used as the size to enable large array optimizations. */
-const LARGE_ARRAY_SIZE = 200
-
-/**
- * The base implementation of methods like `difference` without support
- * for excluding multiple arrays.
- *
- * @private
- * @param {Array} array The array to inspect.
- * @param {Array} values The values to exclude.
- * @param {Function} [iteratee] The iteratee invoked per element.
- * @param {Function} [comparator] The comparator invoked per element.
- * @returns {Array} Returns the new array of filtered values.
- */
-function baseDifference(array, values, iteratee, comparator) {
-  let includes = arrayIncludes
-  let isCommon = true
-  const result = []
-  const valuesLength = values.length
-
-  if (!array.length) {
-    return result
-  }
-  if (iteratee) {
-    values = map(values, (value) => iteratee(value))
-  }
-  if (comparator) {
-    includes = arrayIncludesWith
-    isCommon = false
-  }
-  else if (values.length >= LARGE_ARRAY_SIZE) {
-    includes = cacheHas
-    isCommon = false
-    values = new SetCache(values)
-  }
-  outer:
-  for (let value of array) {
-    const computed = iteratee == null ? value : iteratee(value)
-
-    value = (comparator || value !== 0) ? value : 0
-    if (isCommon && computed === computed) {
-      let valuesIndex = valuesLength
-      while (valuesIndex--) {
-        if (values[valuesIndex] === computed) {
-          continue outer
-        }
-      }
-      result.push(value)
-    }
-    else if (!includes(values, computed, comparator)) {
-      result.push(value)
-    }
-  }
-  return result
-}
-
-export default baseDifference
--- a/src/.internal/baseEach.ts
+++ b/src/.internal/baseEach.ts
@@ -1,31 +0,0 @@
-import baseForOwn from './baseForOwn.js'
-import isArrayLike from '../isArrayLike.js'
-
-/**
- * The base implementation of `forEach`.
- *
- * @private
- * @param {Array|Object} collection The collection to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @returns {Array|Object} Returns `collection`.
- */
-function baseEach(collection, iteratee) {
-  if (collection == null) {
-    return collection
-  }
-  if (!isArrayLike(collection)) {
-    return baseForOwn(collection, iteratee)
-  }
-  const length = collection.length
-  const iterable = Object(collection)
-  let index = -1
-
-  while (++index < length) {
-    if (iteratee(iterable[index], index, iterable) === false) {
-      break
-    }
-  }
-  return collection
-}
-
-export default baseEach
--- a/src/.internal/baseEachRight.ts
+++ b/src/.internal/baseEachRight.ts
@@ -1,30 +0,0 @@
-import baseForOwnRight from './baseForOwnRight.js'
-import isArrayLike from '../isArrayLike.js'
-
-/**
- * The base implementation of `forEachRight`.
- *
- * @private
- * @param {Array|Object} collection The collection to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @returns {Array|Object} Returns `collection`.
- */
-function baseEachRight(collection, iteratee) {
-  if (collection == null) {
-    return collection
-  }
-  if (!isArrayLike(collection)) {
-    return baseForOwnRight(collection, iteratee)
-  }
-  const iterable = Object(collection)
-  let length = collection.length
-
-  while (length--) {
-    if (iteratee(iterable[length], length, iterable) === false) {
-      break
-    }
-  }
-  return collection
-}
-
-export default baseEachRight
--- a/src/.internal/baseFindIndex.ts
+++ b/src/.internal/baseFindIndex.ts
@@ -1,23 +0,0 @@
-/**
- * The base implementation of `findIndex` and `findLastIndex`.
- *
- * @private
- * @param {Array} array The array to inspect.
- * @param {Function} predicate The function invoked per iteration.
- * @param {number} fromIndex The index to search from.
- * @param {boolean} [fromRight] Specify iterating from right to left.
- * @returns {number} Returns the index of the matched value, else `-1`.
- */
-function baseFindIndex(array, predicate, fromIndex, fromRight) {
-  const { length } = array
-  let index = fromIndex + (fromRight ? 1 : -1)
-
-  while ((fromRight ? index-- : ++index < length)) {
-    if (predicate(array[index], index, array)) {
-      return index
-    }
-  }
-  return -1
-}
-
-export default baseFindIndex
--- a/src/.internal/baseFindKey.ts
+++ b/src/.internal/baseFindKey.ts
@@ -1,22 +0,0 @@
-/**
- * The base implementation of methods like `findKey` and `findLastKey`
- * which iterates over `collection` using `eachFunc`.
- *
- * @private
- * @param {Array|Object} collection The collection to inspect.
- * @param {Function} predicate The function invoked per iteration.
- * @param {Function} eachFunc The function to iterate over `collection`.
- * @returns {*} Returns the found element or its key, else `undefined`.
- */
-function baseFindKey(collection, predicate, eachFunc) {
-  let result
-  eachFunc(collection, (value, key, collection) => {
-    if (predicate(value, key, collection)) {
-      result = key
-      return false
-    }
-  })
-  return result
-}
-
-export default baseFindKey
--- a/src/.internal/baseFlatten.ts
+++ b/src/.internal/baseFlatten.ts
@@ -1,37 +0,0 @@
-import isFlattenable from './isFlattenable.js'
-
-/**
- * The base implementation of `flatten` with support for restricting flattening.
- *
- * @private
- * @param {Array} array The array to flatten.
- * @param {number} depth The maximum recursion depth.
- * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
- * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
- * @param {Array} [result=[]] The initial result value.
- * @returns {Array} Returns the new flattened array.
- */
-function baseFlatten(array, depth, predicate, isStrict, result) {
-  predicate || (predicate = isFlattenable)
-  result || (result = [])
-
-  if (array == null) {
-    return result
-  }
-
-  for (const value of array) {
-    if (depth > 0 && predicate(value)) {
-      if (depth > 1) {
-        // Recursively flatten arrays (susceptible to call stack limits).
-        baseFlatten(value, depth - 1, predicate, isStrict, result)
-      } else {
-        result.push(...value)
-      }
-    } else if (!isStrict) {
-      result[result.length] = value
-    }
-  }
-  return result
-}
-
-export default baseFlatten
--- a/src/.internal/baseFor.ts
+++ b/src/.internal/baseFor.ts
@@ -1,27 +0,0 @@
-/**
- * The base implementation of `baseForOwn` which iterates over `object`
- * properties returned by `keysFunc` and invokes `iteratee` for each property.
- * Iteratee functions may exit iteration early by explicitly returning `false`.
- *
- * @private
- * @param {Object} object The object to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @param {Function} keysFunc The function to get the keys of `object`.
- * @returns {Object} Returns `object`.
- */
-function baseFor(object, iteratee, keysFunc) {
-  const iterable = Object(object)
-  const props = keysFunc(object)
-  let { length } = props
-  let index = -1
-
-  while (length--) {
-    const key = props[++index]
-    if (iteratee(iterable[key], key, iterable) === false) {
-      break
-    }
-  }
-  return object
-}
-
-export default baseFor
--- a/src/.internal/baseForOwn.ts
+++ b/src/.internal/baseForOwn.ts
@@ -1,16 +0,0 @@
-import baseFor from './baseFor.js'
-import keys from '../keys.js'
-
-/**
- * The base implementation of `forOwn`.
- *
- * @private
- * @param {Object} object The object to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @returns {Object} Returns `object`.
- */
-function baseForOwn(object, iteratee) {
-  return object && baseFor(object, iteratee, keys)
-}
-
-export default baseForOwn
--- a/src/.internal/baseForOwnRight.ts
+++ b/src/.internal/baseForOwnRight.ts
@@ -1,16 +0,0 @@
-import baseForRight from './baseForRight.js'
-import keys from '../keys.js'
-
-/**
- * The base implementation of `forOwnRight`.
- *
- * @private
- * @param {Object} object The object to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @returns {Object} Returns `object`.
- */
-function baseForOwnRight(object, iteratee) {
-  return object && baseForRight(object, iteratee, keys)
-}
-
-export default baseForOwnRight
--- a/src/.internal/baseForRight.ts
+++ b/src/.internal/baseForRight.ts
@@ -1,25 +0,0 @@
-/**
- * This function is like `baseFor` except that it iterates over properties
- * in the opposite order.
- *
- * @private
- * @param {Object} object The object to iterate over.
- * @param {Function} iteratee The function invoked per iteration.
- * @param {Function} keysFunc The function to get the keys of `object`.
- * @returns {Object} Returns `object`.
- */
-function baseForRight(object, iteratee, keysFunc) {
-  const iterable = Object(object)
-  const props = keysFunc(object)
-  let { length } = props
-
-  while (length--) {
-    const key = props[length]
-    if (iteratee(iterable[key], key, iterable) === false) {
-      break
-    }
-  }
-  return object
-}
-
-export default baseForRight
--- a/src/.internal/baseGet.ts
+++ b/src/.internal/baseGet.ts
@@ -1,24 +0,0 @@
-import castPath from './castPath.js'
-import toKey from './toKey.js'
-
-/**
- * The base implementation of `get` without support for default values.
- *
- * @private
- * @param {Object} object The object to query.
- * @param {Array|string} path The path of the property to get.
- * @returns {*} Returns the resolved value.
- */
-function baseGet(object, path) {
-  path = castPath(path, object)
-
-  let index = 0
-  const length = path.length
-
-  while (object != null && index < length) {
-    object = object[toKey(path[index++])]
-  }
-  return (index && index === length) ? object : undefined
-}
-
-export default baseGet
--- a/src/.internal/baseInRange.ts
+++ b/src/.internal/baseInRange.ts
@@ -1,14 +0,0 @@
-/**
- * The base implementation of `inRange` which doesn't coerce arguments.
- *
- * @private
- * @param {number} number The number to check.
- * @param {number} start The start of the range.
- * @param {number} end The end of the range.
- * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
- */
-function baseInRange(number, start, end) {
-  return number >= Math.min(start, end) && number < Math.max(start, end)
-}
-
-export default baseInRange
--- a/src/.internal/baseIndexOf.ts
+++ b/src/.internal/baseIndexOf.ts
@@ -1,20 +0,0 @@
-import baseFindIndex from './baseFindIndex.js'
-import baseIsNaN from './baseIsNaN.js'
-import strictIndexOf from './strictIndexOf.js'
-
-/**
- * The base implementation of `indexOf` without `fromIndex` bounds checks.
- *
- * @private
- * @param {Array} array The array to inspect.
- * @param {*} value The value to search for.
- * @param {number} fromIndex The index to search from.
- * @returns {number} Returns the index of the matched value, else `-1`.
- */
-function baseIndexOf(array, value, fromIndex) {
-  return value === value
-    ? strictIndexOf(array, value, fromIndex)
-    : baseFindIndex(array, baseIsNaN, fromIndex)
-}
-
-export default baseIndexOf
--- a/src/.internal/baseIndexOfWith.ts
+++ b/src/.internal/baseIndexOfWith.ts
@@ -1,23 +0,0 @@
-/**
- * This function is like `baseIndexOf` except that it accepts a comparator.
- *
- * @private
- * @param {Array} array The array to inspect.
- * @param {*} value The value to search for.
- * @param {number} fromIndex The index to search from.
- * @param {Function} comparator The comparator invoked per element.
- * @returns {number} Returns the index of the matched value, else `-1`.
- */
-function baseIndexOfWith(array, value, fromIndex, comparator) {
-  let index = fromIndex - 1
-  const { length } = array
-
-  while (++index < length) {
-    if (comparator(array[index], value)) {
-      return index
-    }
-  }
-  return -1
-}
-
-export default baseIndexOfWith
--- a/src/.internal/baseIntersection.ts
+++ b/src/.internal/baseIntersection.ts
@@ -1,72 +0,0 @@
-import SetCache from './SetCache.js'
-import arrayIncludes from './arrayIncludes.js'
-import arrayIncludesWith from './arrayIncludesWith.js'
-import map from '../map.js'
-import cacheHas from './cacheHas.js'
-
-/**
- * The base implementation of methods like `intersection` that accepts an
- * array of arrays to inspect.
- *
- * @private
- * @param {Array} arrays The arrays to inspect.
- * @param {Function} [iteratee] The iteratee invoked per element.
- * @param {Function} [comparator] The comparator invoked per element.
- * @returns {Array} Returns the new array of shared values.
- */
-function baseIntersection(arrays, iteratee, comparator) {
-  const includes = comparator ? arrayIncludesWith : arrayIncludes
-  const length = arrays[0].length
-  const othLength = arrays.length
-  const caches = new Array(othLength)
-  const result = []
-
-  let array
-  let maxLength = Infinity
-  let othIndex = othLength
-
-  while (othIndex--) {
-    array = arrays[othIndex]
-    if (othIndex && iteratee) {
-      array = map(array, (value) => iteratee(value))
-    }
-    maxLength = Math.min(array.length, maxLength)
-    caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
-      ? new SetCache(othIndex && array)
-      : undefined
-  }
-  array = arrays[0]
-
-  let index = -1
-  const seen = caches[0]
-
-  outer:
-  while (++index < length && result.length < maxLength) {
-    let value = array[index]
-    const computed = iteratee ? iteratee(value) : value
-
-    value = (comparator || value !== 0) ? value : 0
-    if (!(seen
-      ? cacheHas(seen, computed)
-      : includes(result, computed, comparator)
-    )) {
-      othIndex = othLength
-      while (--othIndex) {
-        const cache = caches[othIndex]
-        if (!(cache
-          ? cacheHas(cache, computed)
-          : includes(arrays[othIndex], computed, comparator))
-        ) {
-          continue outer
-        }
-      }
-      if (seen) {
-        seen.push(computed)
-      }
-      result.push(value)
-    }
-  }
-  return result
-}
-
-export default baseIntersection
--- a/src/.internal/baseIsEqual.ts
+++ b/src/.internal/baseIsEqual.ts
@@ -1,28 +0,0 @@
-import baseIsEqualDeep from './baseIsEqualDeep.js'
-import isObjectLike from '../isObjectLike.js'
-
-/**
- * The base implementation of `isEqual` which supports partial comparisons
- * and tracks traversed objects.
- *
- * @private
- * @param {*} value The value to compare.
- * @param {*} other The other value to compare.
- * @param {boolean} bitmask The bitmask flags.
- *  1 - Unordered comparison
- *  2 - Partial comparison
- * @param {Function} [customizer] The function to customize comparisons.
- * @param {Object} [stack] Tracks traversed `value` and `other` objects.
- * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
- */
-function baseIsEqual(value, other, bitmask, customizer, stack) {
-  if (value === other) {
-    return true
-  }
-  if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
-    return value !== value && other !== other
-  }
-  return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack)
-}
-
-export default baseIsEqual
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Benjamin Tan	f299b52f39	Bump to v4.17.21	2021-02-20 23:33:48 +08:00
Michał Lipiński	c4847ebe7d	Improve performance of `toNumber`, `trim` and `trimEnd` on large input strings This prevents potential ReDoS attacks using `_.toNumber` and `_.trim*` as potential attack vectors. Closes #5065.	2021-02-20 17:18:39 +08:00
Christophe Coevoet	3469357cff	Prevent command injection through `_.template`'s `variable` option Closes #5085.	2021-02-20 16:28:01 +08:00
Benjamin Tan	ded9bc6658	Bump to v4.17.20.	2020-08-14 00:52:55 +08:00
Benjamin Tan	63150ef764	Documentation fixes.	2020-08-14 00:36:26 +08:00
Benjamin Tan	00f0f62a97	test.js: Remove trailing comma.	2020-07-26 19:38:01 +08:00
Benjamin Tan	846e434c7a	Temporarily use a custom fork of `lodash-cli`.	2020-07-26 19:37:20 +08:00
Benjamin Tan	5d046f39cb	Re-enable Travis tests on `4.17` branch.	2020-07-26 19:35:19 +08:00
Benjamin Tan	aa816b36d4	Remove `/npm-package`.	2020-07-26 19:34:22 +08:00
Mathias Bynens	d7fbc52ee0	Bump to v4.17.19	2020-07-08 19:14:09 +02:00
Mathias Bynens	2e1c0f22f4	Add npm-package	2020-07-08 19:10:23 +02:00
Mathias Bynens	1b6c282299	Bump to v4.17.18	2020-07-08 18:04:03 +02:00
Mathias Bynens	a370ac8140	Bump to v4.17.17	2020-07-08 14:00:48 +02:00
Mathias Bynens	1144918f35	Rebuild lodash and docs	2020-07-08 10:08:29 +02:00
Mathias Bynens	3a3b0fd339	Bump to v4.17.16	2020-07-08 09:44:35 +02:00
Jakub Mikulas	c84fe82760	fix(zipObjectDeep): prototype pollution (#4759 )	2020-07-02 14:47:49 -07:00
Alex Brasetvik	e7b28ea6cb	Sanitize sourceURL so it cannot affect evaled code (#4518 )	2020-06-03 23:36:12 -07:00
Chinedum Ukejianya	0cec225778	Fix lodash.isEqual for circular references (#4320 ) (#4515 )	2019-10-16 14:43:11 -07:00
Artemy Tregubenko	94c3a8133c	Document matches* shorthands for over* methods (#4510 ) (#4514 )	2019-10-13 10:54:27 -07:00
Michał Lipiński	659e8c019c	Ensure `orderBy` will accept iteratee path arrays #4438 (#4513 )	2019-10-10 13:04:37 -07:00
Graeme Yeates	602cc3f03d	(4.17) Short circuit sortedIndexBy methods for empty arrays (#4497 )	2019-10-04 10:23:55 -07:00
max	b281ddecc4	change documentation, show clearly how sortBy work with two iteratees (#4467 )	2019-09-16 21:31:36 -07:00
John-David Dalton	ddfd9b11a0	Bump to v4.17.15.	2019-07-17 10:06:33 -07:00
John-David Dalton	b185fcee26	Rebuild lodash and docs.	2019-07-17 10:05:47 -07:00
John-David Dalton	be87d30394	Bump to v4.17.14.	2019-07-10 06:33:09 -07:00
John-David Dalton	a6fe6b1e17	Rebuild lodash and docs.	2019-07-10 06:32:17 -07:00
John-David Dalton	e37182845f	Bump to v4.17.13.	2019-07-09 15:16:26 -07:00
John-David Dalton	357e899e68	Rebuild lodash and docs.	2019-07-09 15:15:19 -07:00
John-David Dalton	fd9a062d57	Bump to v4.17.12.	2019-07-09 13:42:00 -07:00
John-David Dalton	e77d68121f	Rebuild lodash and docs.	2019-07-09 13:34:41 -07:00
John-David Dalton	629d186579	Update OpenJS references.	2019-07-09 13:31:30 -07:00
John-David Dalton	2406eac542	Fix minified build.	2019-07-09 13:30:56 -07:00
John-David Dalton	17a34bc585	Fix test bootstrap for core build.	2019-07-09 12:48:18 -07:00
John-David Dalton	53838a38f8	Fix tests in older browsers.	2019-07-09 12:43:33 -07:00
John-David Dalton	29e258497b	Fix style:test lint nits.	2019-07-09 09:53:48 -07:00
John-David Dalton	8f4d3eb018	Update deps.	2019-07-09 09:36:22 -07:00
John-David Dalton	02b3295a63	Format nit.	2019-07-09 09:34:08 -07:00
John-David Dalton	52ab48c054	Use nativeIsFinite() instead of Number.isFinite().	2019-07-09 09:33:04 -07:00
John-David Dalton	f8dc2149f7	Whitespace nit.	2019-07-09 09:32:38 -07:00
John-David Dalton	deb65de218	Revert "perf(toNumber): use +value to convert binary/octal/hexadecimal string (#4230 )" This reverts commit `7084300d34`.	2019-07-09 09:29:54 -07:00
Alex Brasetvik	60eb517911	Prevent prototype pollution chaining to code execution via _.template (#4355 )	2019-07-09 09:09:55 -07:00
Kirill	1f8ea07746	fix: prototype pollution in _.defaultsDeep (#4336 )	2019-06-24 09:17:55 -07:00
Erick Calder	e42cd97dae	Fixes issue with Object prototype and the chaining syntax. [closes #4247 ]	2019-05-09 13:54:13 -07:00
Jeff Friesen	343456d696	Round Infinity with a precision argument returns Infinity (#4272 ) * Round Infinity with a precision argument returns Infinity * Also making sure this is true for -Infinity * Tested with _.round(), _.floor() and _.ceil() * Switch to using isFinite to check if number should be rounded * Add tests for rounding NaN now that there is an isFinite check	2019-04-18 13:04:18 -07:00
Marc Hassan	0b8592a35c	mergeWith: stack passed to customizer should always be defined (#4244 ) Summary: If the first values encountered in the `object` in mergeWith are not objects, `stack` is undefined when passed to the `customizer`. Once the first object-ish value is encountered, `stack` gets initialized, and all further calls to `customizer` include a defined `stack`. This PR makes `stack` always defined, even before the first object-ish value is encountered.	2019-03-21 20:54:53 -07:00
Amu	7084300d34	perf(toNumber): use +value to convert binary/octal/hexadecimal string (#4230 )	2019-03-13 22:47:28 -07:00
liang feng	15b156512f	cancel old timer (#4139 )	2019-02-11 22:49:02 -08:00
John-David Dalton	bda6f2795f	Update wording of fp wiki template for method spread rule exceptions.	2018-12-04 20:26:22 -08:00
John-David Dalton	1cb18dfada	Revert "Ensure _.pick paths aren't interpolated twice. [closes #3952 ]" This reverts commit `39a7eae40d`.	2018-11-21 10:23:00 -06:00
John-David Dalton	39a7eae40d	Ensure _.pick paths aren't interpolated twice. [closes #3952 ]	2018-09-17 22:38:33 -07:00
John-David Dalton	e0cbb4c8e6	Ensure map and set clones contain custom properties of source values. [closes #3951 ]	2018-09-17 22:31:34 -07:00
John-David Dalton	0843bd46ef	Bump to v4.17.11.	2018-09-12 10:44:07 -07:00
John-David Dalton	3ac4b261e4	Rebuild lodash and docs.	2018-09-12 10:44:01 -07:00
John-David Dalton	eaa9f36e91	Commit package-lock.json.	2018-08-31 16:22:41 -07:00
John-David Dalton	552f94a7db	Lint nits.	2018-08-31 15:35:06 -07:00
John-David Dalton	d8ddc1a15f	Add test for indirectly merging `Object` properties.	2018-08-31 15:34:45 -07:00
John-David Dalton	e5f9af5418	Remove prototype property check in safeGet().	2018-08-31 15:22:17 -07:00
John-David Dalton	2de676fe76	Ensure placeholder properties are set for fp.convert() results. [closes #3440 ]	2018-08-30 23:57:31 -07:00
John-David Dalton	278c6dd33d	Cleanup _.merge tests for function properties.	2018-08-30 22:58:11 -07:00
sina	79b9d20a91	Fix inconsistent merging of multiple sources to function property	2018-08-30 22:35:04 -07:00
John-David Dalton	6e62e1e8df	Cleanup ReDoS test.	2018-08-30 22:33:55 -07:00
Manuel Jasso	5c08f18d36	Prevent ReDoS To fix https://github.com/lodash/lodash/issues/3359, modified reHasUnicodeWord to remove an unnecessary comma which made the regex greedy, this is only a test regex and not a matching regex. Added unit tests, this now should run under 5 ms instead of over 1000 ms for huge 50k+ char words.	2018-08-30 22:07:27 -07:00
John-David Dalton	90e6199a16	Ensure Object.prototype is not augmented by _.merge.	2018-08-30 22:06:15 -07:00
John-David Dalton	67389a8c78	Bump to v4.17.10.	2018-04-24 15:27:33 -07:00
John-David Dalton	a65fd33603	Rebuild lodash and docs.	2018-04-24 15:26:43 -07:00
John-David Dalton	b002100433	Bump to v4.17.9.	2018-04-24 10:29:57 -07:00
John-David Dalton	4680cdacc0	Rebuild lodash and docs.	2018-04-24 10:29:50 -07:00
John-David Dalton	852988e04a	Use util.types to migrate DEP0103 in Node.js. PR: #3704	2018-04-24 10:28:01 -07:00
John-David Dalton	97e9edc53d	Bump to v4.17.5.	2018-02-03 22:35:31 -08:00
John-David Dalton	ce32a89e3e	Rebuild lodash and docs.	2018-02-03 22:35:25 -08:00
John-David Dalton	5e58cd216c	Fix style nits.	2018-02-03 21:25:41 -08:00
John-David Dalton	5adb4ee95c	Make _.defaults avoid accessing property values it doesn't need to. [closes #2983 ]	2018-02-03 21:25:41 -08:00
John-David Dalton	a73b92b58e	Avoid using the values toString method in _.invert if it’s not a function. [closes #3260 ]	2018-02-03 21:25:41 -08:00
John-David Dalton	a1b53054d6	Add 4.17.5 branch to travis.	2018-02-03 21:25:31 -08:00
John-David Dalton	dac890a211	Enable _.words to detect ordinals in compound words. [closes #3561 ]	2018-02-02 18:10:02 -08:00
John-David Dalton	7167a78644	Replacing a regex in `stringToPath` with a quick character code check. (#3308 )	2018-02-02 18:10:01 -08:00
John-David Dalton	f83197727b	Avoid shadowing `result` in `remainingWait`. (#3280 )	2018-02-02 18:10:01 -08:00
John-David Dalton	20c5307542	stringToPath: avoid shadowing variable. (#3226 )	2018-02-02 18:10:01 -08:00
John-David Dalton	45ac7f3bcc	Support symbols in property paths of `set`. [closes #3189 ]	2018-02-02 18:10:01 -08:00
John-David Dalton	7cb477a3a0	Use `new` to create the array clone.	2018-02-02 18:10:01 -08:00
John-David Dalton	b8c719d3be	Fix cloneDeep with circularly dependent Sets/Maps. [closes #3122 ]	2018-02-02 18:09:54 -08:00
John-David Dalton	d8e069cc34	Avoid merging properties on to __proto__ objects.	2018-01-30 23:21:12 -08:00
John-David Dalton	5a3ff73997	Ensure `cloneByPath` preserves uncloneable values. [closes #3203 ]	2017-06-14 07:17:44 -07:00