Update security policy

chore: combine the if statements into one (#5785 )
fix: inRange test (#5821 )
2026-01-29 06:27:49 +00:00 · 2024-10-06 13:19:41 -04:00 · 2024-07-10 15:56:03 -05:00 · 2024-04-15 22:55:09 -04:00 · 2024-01-11 09:07:57 -08:00 · 2023-09-27 10:00:44 -07:00
841 changed files with 38808 additions and 126929 deletions
--- a/.commitlintrc.js
+++ b/.commitlintrc.js
@@ -0,0 +1,29 @@
+'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
@@ -0,0 +1,5 @@
+coverage/
+coverage-merged/
+dist/
+node_modules/
+types/
--- a/.eslintrc
+++ b/.eslintrc
@@ -0,0 +1,99 @@
+{
+  "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 +1,2 @@
 * text=auto
+*.lockb binary diff=lockb
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,8 +1,14 @@
+# :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://github.com/lodash/lodash/blob/master/CODE_OF_CONDUCT.md)
-& [search the issue tracker](https://github.com/lodash/lodash/issues); your issue
+[code of conduct](https://code-of-conduct.openjsf.org) &
+[search the issue tracker](https://github.com/lodash/lodash/issues); your issue
 may have already been discussed or fixed in `master`. To contribute,
 [fork](https://help.github.com/articles/fork-a-repo/) Lodash, commit your changes,
 & [send a pull request](https://help.github.com/articles/using-pull-requests/).
@@ -11,31 +17,30 @@ may have already been discussed or fixed in `master`. To contribute,

 Feature requests should be submitted in the
 [issue tracker](https://github.com/lodash/lodash/issues), with a description of
-the expected behavior & use case, where they’ll remain closed until sufficient
-interest, e.g. :+1:’s, has been shown by the community. Before submitting a request,
-please search for similar ones in the
+the expected behavior & use case, where they’ll remain closed until sufficient interest,
+[e.g. :+1: reactions](https://help.github.com/articles/about-discussions-in-issues-and-pull-requests/),
+has been [shown by the community](https://github.com/lodash/lodash/issues?q=label%3A%22votes+needed%22+sort%3Areactions-%2B1-desc).
+Before submitting a request, please search for similar ones in the
 [closed issues](https://github.com/lodash/lodash/issues?q=is%3Aissue+is%3Aclosed+label%3Aenhancement).

 ## Pull Requests

-For additions or bug fixes you should only need to modify `lodash.js`. Include
-updated unit tests in the `test` directory as part of your pull request. Don’t
-worry about regenerating the `dist/` or `doc/` files.
+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`.

 Before running the unit tests you’ll need to install, `npm i`,
 [development dependencies](https://docs.npmjs.com/files/package.json#devdependencies).
-Run unit tests from the command-line via `npm test`, or open `test/index.html` &
-`test/fp.html` in a web browser. The [Backbone](http://backbonejs.org/) &
-[Underscore](http://underscorejs.org/) test suites are included as well.
+Run unit tests from the command-line via `npm test`.

 ## Contributor License Agreement

-Lodash is a member of the [Dojo Foundation](http://dojofoundation.org/).
-As such, we request that all contributors sign the Dojo Foundation
-[contributor license agreement (CLA)](http://dojofoundation.org/about/claForm).
+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).

 For more information about CLAs, please check out Alex Russell’s excellent post,
-[“Why Do I Need to Sign This?”](http://infrequently.org/2008/06/why-do-i-need-to-sign-this/).
+[“Why Do I Need to Sign This?”](https://infrequently.org/2008/06/why-do-i-need-to-sign-this/).

 ## Coding Guidelines

@@ -47,7 +52,7 @@ established in the code.

 - **Naming**:<br>
  Keep variable & method names concise & descriptive.<br>
-  Variable names `index`, `collection`, & `callback` are preferable to
+  Variable names `index`, `array`, & `iteratee` are preferable to
  `i`, `arr`, & `fn`.

 - **Quotes**:<br>
@@ -60,8 +65,7 @@ established in the code.
  [JSDoc-style](http://www.2ality.com/2011/08/jsdoc-intro.html) comments for
  functions.

-Guidelines are enforced using [JSCS](https://www.npmjs.com/package/jscs):
-
+Guidelines are enforced using [ESLint](https://www.npmjs.com/package/eslint):
 ```bash
 $ npm run style
 ```
--- a/.github/lock.yml
+++ b/.github/lock.yml
@@ -0,0 +1,24 @@
+# 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
@@ -0,0 +1,16 @@
+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
@@ -1,7 +1,8 @@
 .DS_Store
-*.custom.*
-*.log
-*.map
-lodash.compat.min.js
-coverage
-node_modules
+*.log*
+dist/
+node_modules/
+*.code-workspace
+*.lockb
+*.sublime-project
+*.sublime-workspace
--- a/.husky/.gitignore
+++ b/.husky/.gitignore
@@ -0,0 +1 @@
+_
--- a/.husky/commit-msg
+++ b/.husky/commit-msg
@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+bun run commitlint --edit "$1"
--- a/.husky/pre-commit
+++ b/.husky/pre-commit
@@ -0,0 +1,4 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+bun run lint-staged
--- a/.jscsrc
+++ b/.jscsrc
@@ -1,96 +0,0 @@
-{
-    "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,
-
-    "jsDoc": {
-        "checkRedundantAccess": true,
-        "checkTypes": true,
-        "requireNewlineAfterDescription": true,
-        "requireParamDescription": true,
-        "requireParamTypes": true,
-        "requireReturnTypes": true
-    }
-}
--- a/.prettierignore
+++ b/.prettierignore
@@ -0,0 +1,5 @@
+coverage/
+coverage-merged/
+dist/
+node_modules/
+types/
--- a/.prettierrc
+++ b/.prettierrc
@@ -0,0 +1,6 @@
+{
+  "printWidth": 100,
+  "useTabs": false,
+  "tabWidth": 4,
+  "singleQuote": true
+}
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,77 +0,0 @@
-language: node_js
-sudo: false
-node_js:
-  - "5"
-env:
-  global:
-    - BIN="node" ISTANBUL=false OPTION=""
-    - SAUCE_LABS=false SAUCE_USERNAME="lodash"
-    - secure: "tg1JFsIFnxzLaTboFPOnm+aJCuMm5+JdhLlESlqg9x3fwro++7KCnwHKLNovhchaPe4otC43ZMB/nfWhDnDm11dKbm/V6HlTkED+dadTsaLxVDg6J+7yK41QhokBPJOxLV78iDaNaAQVYEirAgZ0yn8kFubxmNKV+bpCGQNc9yU="
-  matrix:
-    -
-    - BIN="phantomjs"
-    - ISTANBUL=true
-    - SAUCE_LABS=true
-matrix:
-  include:
-    - node_js: "0.10"
-      env:
-    - node_js: "0.12"
-      env:
-    - node_js: "4"
-      env:
-git:
-  depth: 10
-branches:
-  only:
-    - master
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/4aab6358b0e9aed0b628
-    on_success: change
-    on_failure: always
-before_install:
-  - "nvm use $TRAVIS_NODE_VERSION"
-  - "npm set loglevel error"
-  - "npm set progress false"
-  - "npm i -g npm@\"^2.0.0\""
-  - |
-      PATTERN[0]="|\s*if\s*\(isHostObject\b[\s\S]+?\}(?=\n)|"
-      PATTERN[1]="|\s*if\s*\(enumerate\b[\s\S]+?\};\s*\}|"
-      PATTERN[2]="|\s*while\s*\([^)]+\)\s*\{\s*iteratee\(index\);\s*\}|"
-      PATTERN[3]="|\s*else\s*\{\s*assocSet\(data\b[\s\S]+?\}|"
-      PATTERN[4]="|\s*if\s*\(ctorString\b[\s\S]+?\}\s*\}|"
-      PATTERN[5]="|\bindex,\s*iterable\)\s*===\s*false\)[^}]+?(break;)|"
-      PATTERN[6]="|\s*if\s*\(\!lodashFunc\)\s*\{\s*return;\s*\}|"
-      PATTERN[7]="|\s*define\([\s\S]+?\);|"
-      PATTERN[8]="|\s*root\._\s*=\s*_;|"
-
-      if [ $ISTANBUL == true ]; then
-        set -e
-        for PTRN in ${PATTERN[@]}; do
-          node ./test/remove.js "$PTRN" ./lodash.js
-        done
-      fi
-  - "git clone --depth=10 --branch=master git://github.com/lodash/lodash-cli ./node_modules/lodash-cli && mkdir $_/node_modules && cd $_ && ln -s ../../../ ./lodash && cd ../ && npm i && cd ../../"
-  - "node ./node_modules/lodash-cli/bin/lodash -o ./dist/lodash.js"
-script:
-  - "[ $ISTANBUL == false ]   || istanbul cover -x \"**/vendor/**\" --report lcovonly ./test/test.js -- ./lodash.js"
-  - "[ $ISTANBUL == false ]   || [ $TRAVIS_SECURE_ENV_VARS == false ] || (cat ./coverage/lcov.info | coveralls) || true"
-  - "[ $ISTANBUL == false ]   || [ $TRAVIS_SECURE_ENV_VARS == false ] || (cat ./coverage/coverage.json | codecov) || true"
-  - "[ $SAUCE_LABS == true ]  || [ $ISTANBUL == true ] || cd ./test"
-  - "[ $SAUCE_LABS == true ]  || [ $ISTANBUL == true ] || $BIN $OPTION ./test.js ../lodash.js"
-  - "[ $SAUCE_LABS == true ]  || [ $ISTANBUL == true ] || [ $TRAVIS_SECURE_ENV_VARS == false ] || $BIN $OPTION ./test.js ../dist/lodash.min.js"
-  - "[ $SAUCE_LABS == false ] || rm -rf ./node_modules/lodash"
-  - "[ $SAUCE_LABS == false ] || ($BIN ./node_modules/lodash-cli/bin/lodash modularize exports=node -o ./node_modules/lodash && node ./node_modules/lodash-cli/bin/lodash -d -o ./node_modules/lodash/lodash.js)"
-  - "[ $SAUCE_LABS == false ] || $BIN ./node_modules/lodash-cli/bin/lodash core -o ./dist/lodash.core.js"
-  - "[ $SAUCE_LABS == false ] || npm run build"
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"lodash tests\"     runner=\"test/index.html?build=../dist/lodash.js&noglobals=true\"     tags=\"development\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"lodash tests\"     runner=\"test/index.html?build=../dist/lodash.min.js&noglobals=true\" tags=\"production\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"lodash-fp tests\"  runner=\"test/fp.html?noglobals=true\"                                tags=\"development\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"underscore tests\" runner=\"test/underscore.html?build=../dist/lodash.js\"               tags=\"development,underscore\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"underscore tests\" runner=\"test/underscore.html?build=../dist/lodash.min.js\"           tags=\"production,underscore\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.js\"                 tags=\"development,backbone\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.min.js\"             tags=\"production,backbone\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.core.js\"            tags=\"development,backbone\""
-  - "[ $SAUCE_LABS == false ] || $BIN ./test/saucelabs.js name=\"backbone tests\"   runner=\"test/backbone.html?build=../dist/lodash.core.min.js\"        tags=\"production,backbone\""
--- a/1
+++ b/1
@@ -0,0 +1 @@
+https://github.com/lodash/lodash/wiki/Changelog
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@@ -1,74 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, gender identity and expression, level of experience,
-nationality, personal appearance, race, religion, or sexual identity and
-orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or
-advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at [coc@lodash.com](mailto:coc@lodash.com).
-The project team will review and investigate all complaints, and will respond in
-a way that it deems appropriate to the circumstances. The project team is obligated
-to maintain confidentiality with regard to the reporter of an incident. Further
-details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at [http://contributor-covenant.org/version/1/4][version]
-
-[homepage]: http://contributor-covenant.org
-[version]: http://contributor-covenant.org/version/1/4/
--- a/62
+++ b/62
@@ -1,23 +1,49 @@
-The MIT License (MIT)
+The MIT License

-Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
-Based on Underscore.js, copyright 2009-2016 Jeremy Ashkenas,
+Copyright JS Foundation and other contributors <https://js.foundation/>
+
+Based on Underscore.js, copyright Jeremy Ashkenas,
 DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>

-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+This software consists of voluntary contributions made by many
+individuals. For exact contribution history, see the revision history
+available at https://github.com/lodash/lodash

-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+The following license applies to all parts of this software except as
+documented below:

-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+====
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+====
+
+Copyright and related rights for sample code are waived via CC0. Sample
+code is defined as all source code displayed within the prose of the
+documentation.
+
+CC0: http://creativecommons.org/publicdomain/zero/1.0/
+
+====
+
+Files located in the node_modules and vendor directories are externally
+maintained libraries used by this software which have their own
+licenses; we recommend you read them, as their terms may differ from the
+terms above.
--- a/README.md
+++ b/README.md
@@ -1,52 +1,72 @@
-# lodash v4.6.1
+# lodash

-The [lodash](https://lodash.com/) library exported as a [UMD](https://github.com/umdjs/umd) module.
+[Site](https://lodash.com/) |
+[Docs](https://lodash.com/docs) |
+[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)

-Generated using [lodash-cli](https://www.npmjs.com/package/lodash-cli):
-```bash
-$ npm run build
+The [Lodash](https://lodash.com/) library exported as a [UMD](https://github.com/umdjs/umd) module.
+
+```shell
+$ bun run build
 $ lodash -o ./dist/lodash.js
 $ lodash core -o ./dist/lodash.core.js
 ```

-## Community
-
-[![Gitter](https://badges.gitter.im/lodash/lodash.svg)](https://gitter.im/lodash/lodash)
-
-## Documentation
-
-  * [API Documentation](https://lodash.com/docs)
-  * [FP Guide](https://github.com/lodash/lodash/wiki/FP-Guide)
-
 ## Download

-Lodash is released under the [MIT license](https://raw.githubusercontent.com/lodash/lodash/4.6.1/LICENSE) & supports [modern environments](#support).<br>
+ * [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)
+
+Lodash is released under the [MIT license](https://raw.githubusercontent.com/lodash/lodash/4.17.10-npm/LICENSE) & supports modern environments.<br>
 Review the [build differences](https://github.com/lodash/lodash/wiki/build-differences) & pick one that’s right for you.

- * [Core build](https://raw.githubusercontent.com/lodash/lodash/4.6.1/dist/lodash.core.js) ([~4 kB gzipped](https://raw.githubusercontent.com/lodash/lodash/4.6.1/dist/lodash.core.min.js))
- * [Full build](https://raw.githubusercontent.com/lodash/lodash/4.6.1/dist/lodash.js) ([~21 kB gzipped](https://raw.githubusercontent.com/lodash/lodash/4.6.1/dist/lodash.min.js))
- * [CDN copies](https://www.jsdelivr.com/projects/lodash)
+## Installation
+
+In a browser:
+```html
+<script src="lodash.js"></script>
+```
+
+Using bun:
+```shell
+$ bun i lodash
+```
+
+In [Bun](https://bun.sh):
+```js
+// Load the full build.
+var _ = require('lodash');
+// Load the core build.
+var _ = require('lodash/core');
+// Load the FP build for immutable auto-curried iteratee-first data-last methods.
+var fp = require('lodash/fp');
+
+// Load method categories.
+var array = require('lodash/array');
+var object = require('lodash/fp/object');
+
+// Cherry-pick methods for smaller browserify/rollup/webpack bundles.
+var at = require('lodash/at');
+var curryN = require('lodash/fp/curryN');
+```
+
+Looking for Lodash modules written in ES6 or smaller bundle sizes? Check out [lodash-es](https://www.npmjs.com/package/lodash-es).

 ## Why Lodash?

 Lodash makes JavaScript easier by taking the hassle out of working with arrays,<br>
 numbers, objects, strings, etc. Lodash’s modular methods are great for:

-* Iterating arrays, objects, & strings
-* Manipulating & testing values
-* Creating composite functions
+ * Iterating arrays, objects, & strings
+ * Manipulating & testing values
+ * Creating composite functions

 ## Module Formats

 Lodash is available in a [variety of builds](https://lodash.com/custom-builds) & module formats.

- * [lodash](https://www.npmjs.com/package/lodash) & [per method packages](https://www.npmjs.com/browse/keyword/lodash-modularized)
- * [lodash-amd](https://www.npmjs.com/package/lodash-amd)
- * [lodash-es](https://www.npmjs.com/package/lodash-es) & [babel-plugin-lodash](https://www.npmjs.com/package/babel-plugin-lodash)
- * [lodash/fp](https://github.com/lodash/lodash/tree/4.6.1-npm/fp)
-
-## Further Reading
-
-  * [Contributing](https://github.com/lodash/lodash/blob/4.6.1/.github/CONTRIBUTING.md)
-  * [Release Notes](https://github.com/lodash/lodash/releases/tag/4.0.0)
-  * [Wiki (Changelog, Roadmap, etc.)](https://github.com/lodash/lodash/wiki)
+ * [lodash](https://www.npmjs.com/package/lodash) & [per method packages](https://www.npmjs.com/search?q=keywords: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)
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -0,0 +1,35 @@
+# 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
@@ -0,0 +1,2 @@
+[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
@@ -1,29 +0,0 @@
-/**
- * @license
- * lodash 4.6.1 (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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-		module.exports = factory();
-	else if(typeof define === 'function' && define.amd)
-		define([], factory);
-	else if(typeof exports === 'object')
-		exports["fp"] = factory();
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-/* 0 */
-/***/ function(module, exports, __webpack_require__) {
-
-	var baseConvert = __webpack_require__(1);
-
-	/**
-	 * Converts `lodash` to an immutable auto-curried iteratee-first data-last version.
-	 *
-	 * @param {Function} lodash The lodash function.
-	 * @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') {
-	  _ = browserConvert(_.runInContext());
-	}
-	module.exports = browserConvert;
-
-
-/***/ },
-/* 1 */
-/***/ function(module, exports, __webpack_require__) {
-
-	var mapping = __webpack_require__(2),
-	    mutateMap = mapping.mutate,
-	    placeholder = {};
-
-	/**
-	 * The base implementation of `convert` which accepts a `util` object of methods
-	 * required to perform conversions.
-	 *
-	 * @param {Object} util The util object.
-	 * @param {string} name The name of the function to wrap.
-	 * @param {Function} func The function to wrap.
-	 * @param {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 setPlaceholder,
-	      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 forceRearg = ('rearg' in options) && options.rearg;
-
-	  var helpers = isLib ? func : {
-	    'ary': util.ary,
-	    'clone': util.clone,
-	    'curry': util.curry,
-	    'forEach': util.forEach,
-	    'isArray': util.isArray,
-	    'isFunction': util.isFunction,
-	    'iteratee': util.iteratee,
-	    'keys': util.keys,
-	    'rearg': util.rearg,
-	    'spread': util.spread,
-	    'toPath': util.toPath
-	  };
-
-	  var ary = helpers.ary,
-	      clone = helpers.clone,
-	      curry = helpers.curry,
-	      each = helpers.forEach,
-	      isArray = helpers.isArray,
-	      isFunction = helpers.isFunction,
-	      keys = helpers.keys,
-	      rearg = helpers.rearg,
-	      spread = helpers.spread,
-	      toPath = helpers.toPath;
-
-	  var aryMethodKeys = keys(mapping.aryMethod);
-
-	  var baseArity = function(func, n) {
-	    return n == 2
-	      ? function(a, b) { return func.apply(undefined, arguments); }
-	      : function(a) { return func.apply(undefined, arguments); };
-	  };
-
-	  var baseAry = function(func, n) {
-	    return n == 2
-	      ? function(a, b) { return func(a, b); }
-	      : function(a) { return func(a); };
-	  };
-
-	  var cloneArray = function(array) {
-	    var length = array ? array.length : 0,
-	        result = Array(length);
-
-	    while (length--) {
-	      result[length] = array[length];
-	    }
-	    return result;
-	  };
-
-	  var cloneByPath = function(object, path) {
-	    path = toPath(path);
-
-	    var index = -1,
-	        length = path.length,
-	        result = clone(Object(object)),
-	        nested = result;
-
-	    while (nested != null && ++index < length) {
-	      var key = path[index],
-	          value = nested[key];
-
-	      if (value != null) {
-	        nested[key] = clone(Object(value));
-	      }
-	      nested = nested[key];
-	    }
-	    return result;
-	  };
-
-	  var createCloner = function(func) {
-	    return function(object) {
-	      return func({}, object);
-	    };
-	  };
-
-	  var immutWrap = function(func, cloner) {
-	    return function() {
-	      var length = arguments.length;
-	      if (!length) {
-	        return result;
-	      }
-	      var args = Array(length);
-	      while (length--) {
-	        args[length] = arguments[length];
-	      }
-	      var result = args[0] = cloner.apply(undefined, args);
-	      func.apply(undefined, args);
-	      return result;
-	    };
-	  };
-
-	  var iterateeAry = function(func, n) {
-	    return overArg(func, function(func) {
-	      return typeof func == 'function' ? baseAry(func, n) : func;
-	    });
-	  };
-
-	  var iterateeRearg = function(func, indexes) {
-	    return overArg(func, function(func) {
-	      var n = indexes.length;
-	      return baseArity(rearg(baseAry(func, n), indexes), n);
-	    });
-	  };
-
-	  var overArg = function(func, iteratee, retArg) {
-	    return function() {
-	      var length = arguments.length;
-	      if (!length) {
-	        return func();
-	      }
-	      var args = Array(length);
-	      while (length--) {
-	        args[length] = arguments[length];
-	      }
-	      var index = config.rearg ? 0 : (length - 1);
-	      args[index] = iteratee(args[index]);
-	      return func.apply(undefined, args);
-	    };
-	  };
-
-	  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 methods = [],
-	            methodNames = [];
-
-	        each(keys(source), function(key) {
-	          var value = source[key];
-	          if (isFunction(value)) {
-	            methodNames.push(key);
-	            methods.push(func.prototype[key]);
-	          }
-	        });
-
-	        mixin(func, Object(source));
-
-	        each(methodNames, function(methodName, index) {
-	          var method = methods[index];
-	          if (isFunction(method)) {
-	            func.prototype[methodName] = method;
-	          } else {
-	            delete func.prototype[methodName];
-	          }
-	        });
-	        return func;
-	      };
-	    },
-	    'runInContext': function(runInContext) {
-	      return function(context) {
-	        return baseConvert(util, runInContext(context), options);
-	      };
-	    }
-	  };
-
-	  var wrap = function(name, func) {
-	    name = mapping.aliasToReal[name] || name;
-	    var wrapper = wrappers[name];
-	    if (wrapper) {
-	      return wrapper(func);
-	    }
-	    var wrapped = func;
-	    if (config.immutable) {
-	      if (mutateMap.array[name]) {
-	        wrapped = immutWrap(func, cloneArray);
-	      }
-	      else if (mutateMap.object[name]) {
-	        wrapped = immutWrap(func, createCloner(func));
-	      }
-	      else if (mutateMap.set[name]) {
-	        wrapped = immutWrap(func, cloneByPath);
-	      }
-	    }
-	    var result;
-	    each(aryMethodKeys, function(aryKey) {
-	      each(mapping.aryMethod[aryKey], function(otherName) {
-	        if (name == otherName) {
-	          var aryN = !isLib && mapping.iterateeAry[name],
-	              reargIndexes = mapping.iterateeRearg[name],
-	              spreadStart = mapping.methodSpread[name];
-
-	          result = wrapped;
-	          if (config.fixed) {
-	            result = spreadStart === undefined
-	              ? ary(result, aryKey)
-	              : spread(result, spreadStart);
-	          }
-	          if (config.rearg && aryKey > 1 && (forceRearg || !mapping.skipRearg[name])) {
-	            result = rearg(result, mapping.methodRearg[name] || mapping.aryRearg[aryKey]);
-	          }
-	          if (config.cap) {
-	            if (reargIndexes) {
-	              result = iterateeRearg(result, reargIndexes);
-	            } else if (aryN) {
-	              result = iterateeAry(result, aryN);
-	            }
-	          }
-	          if (config.curry && aryKey > 1) {
-	            result = curry(result, aryKey);
-	          }
-	          return false;
-	        }
-	      });
-	      return !result;
-	    });
-
-	    result || (result = wrapped);
-	    if (mapping.placeholder[name]) {
-	      setPlaceholder = true;
-	      func.placeholder = result.placeholder = placeholder;
-	    }
-	    return result;
-	  };
-
-	  if (!isObj) {
-	    return wrap(name, func);
-	  }
-	  var _ = func;
-
-	  // Iterate over methods for the current 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)]);
-	      }
-	    });
-	  });
-
-	  // Assign to `_` leaving `_.prototype` unchanged to allow chaining.
-	  each(pairs, function(pair) {
-	    _[pair[0]] = pair[1];
-	  });
-
-	  if (setPlaceholder) {
-	    _.placeholder = placeholder;
-	  }
-	  // Wrap the lodash method and its aliases.
-	  each(keys(_), function(key) {
-	    each(mapping.realToAlias[key] || [], function(alias) {
-	      _[alias] = _[key];
-	    });
-	  });
-
-	  return _;
-	}
-
-	module.exports = baseConvert;
-
-
-/***/ },
-/* 2 */
-/***/ function(module, exports) {
-
-	/** Used to map aliases to their real names. */
-	exports.aliasToReal = {
-	  '__': 'placeholder',
-	  'all': 'some',
-	  'allPass': 'overEvery',
-	  'apply': 'spread',
-	  'assoc': 'set',
-	  'assocPath': 'set',
-	  'compose': 'flowRight',
-	  'contains': 'includes',
-	  'dissoc': 'unset',
-	  'dissocPath': 'unset',
-	  'each': 'forEach',
-	  'eachRight': 'forEachRight',
-	  'equals': 'isEqual',
-	  'extend': 'assignIn',
-	  'extendWith': 'assignInWith',
-	  'first': 'head',
-	  'init': 'initial',
-	  'mapObj': 'mapValues',
-	  'omitAll': 'omit',
-	  'nAry': 'ary',
-	  'path': 'get',
-	  'pathEq': 'matchesProperty',
-	  'pathOr': 'getOr',
-	  'pickAll': 'pick',
-	  'pipe': 'flow',
-	  'prop': 'get',
-	  'propOf': 'propertyOf',
-	  'propOr': 'getOr',
-	  'somePass': 'overSome',
-	  'unapply': 'rest',
-	  'unnest': 'flatten',
-	  'useWith': 'overArgs',
-	  'whereEq': 'filter',
-	  'zipObj': 'zipObject'
-	};
-
-	/** Used to map ary to method names. */
-	exports.aryMethod = {
-	  '1': [
-	    'attempt', 'castArray', 'ceil', 'create', 'curry', 'curryRight', 'floor',
-	    'fromPairs', 'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin',
-	    'over', 'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
-	    'spread', 'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
-	  ],
-	  '2': [
-	    'add', 'after', 'ary', 'assign', 'assignIn', 'at', 'before', 'bind', 'bindKey',
-	    'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
-	    'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
-	    'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq', 'every',
-	    'filter', 'find', 'find', 'findIndex', 'findKey', 'findLast', 'findLastIndex',
-	    'findLastKey', 'flatMap', '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', 'merge', 'minBy', 'omit',
-	    'omitBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt', 'partial',
-	    'partialRight', 'partition', 'pick', 'pickBy', 'pull', 'pullAll', 'pullAt',
-	    'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove', 'repeat', 'result',
-	    'sampleSize', 'some', 'sortBy', 'sortedIndex', 'sortedIndexOf', 'sortedLastIndex',
-	    'sortedLastIndexOf', 'sortedUniqBy', 'split', 'startsWith', 'subtract', 'sumBy',
-	    'take', 'takeRight', 'takeRightWhile', 'takeWhile', 'tap', 'throttle', 'thru',
-	    'times', 'trimChars', 'trimCharsEnd', 'trimCharsStart', 'truncate', 'union',
-	    'uniqBy', 'uniqWith', 'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip',
-	    'zipObject', 'zipObjectDeep'
-	  ],
-	  '3': [
-	    'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
-	    'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
-	    'isMatchWith', 'mergeWith', 'orderBy', 'pullAllBy', 'pullAllWith', '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 = {
-	  'assignWith': 2,
-	  'assignInWith': 2,
-	  'cloneDeepWith': 1,
-	  'cloneWith': 1,
-	  'dropRightWhile': 1,
-	  'dropWhile': 1,
-	  'every': 1,
-	  'filter': 1,
-	  'find': 1,
-	  'findIndex': 1,
-	  'findKey': 1,
-	  'findLast': 1,
-	  'findLastIndex': 1,
-	  'findLastKey': 1,
-	  'flatMap': 1,
-	  'forEach': 1,
-	  'forEachRight': 1,
-	  'forIn': 1,
-	  'forInRight': 1,
-	  'forOwn': 1,
-	  'forOwnRight': 1,
-	  'isEqualWith': 2,
-	  'isMatchWith': 2,
-	  'map': 1,
-	  'mapKeys': 1,
-	  'mapValues': 1,
-	  'partition': 1,
-	  'reduce': 2,
-	  'reduceRight': 2,
-	  'reject': 1,
-	  'remove': 1,
-	  'some': 1,
-	  'takeRightWhile': 1,
-	  'takeWhile': 1,
-	  'times': 1,
-	  'transform': 2
-	};
-
-	/** Used to map method names to iteratee rearg configs. */
-	exports.iterateeRearg = {
-	  'mapKeys': [1]
-	};
-
-	/** Used to map method names to rearg configs. */
-	exports.methodRearg = {
-	  'assignInWith': [1, 2, 0],
-	  'assignWith': [1, 2, 0],
-	  'getOr': [2, 1, 0],
-	  'isMatchWith': [2, 1, 0],
-	  'mergeWith': [1, 2, 0],
-	  'pullAllBy': [2, 1, 0],
-	  'pullAllWith': [2, 1, 0],
-	  'setWith': [3, 1, 2, 0],
-	  'sortedIndexBy': [2, 1, 0],
-	  'sortedLastIndexBy': [2, 1, 0],
-	  'updateWith': [3, 1, 2, 0],
-	  'zipWith': [1, 2, 0]
-	};
-
-	/** Used to map method names to spread configs. */
-	exports.methodSpread = {
-	  'partial': 1,
-	  'partialRight': 1
-	};
-
-	/** 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,
-	    'assignIn': true,
-	    'assignInWith': true,
-	    'assignWith': true,
-	    'defaults': true,
-	    'defaultsDeep': true,
-	    'merge': true,
-	    'mergeWith': true
-	  },
-	  'set': {
-	    'set': true,
-	    'setWith': true,
-	    'unset': true,
-	    'update': true,
-	    'updateWith': true
-	  }
-	};
-
-	/** Used to track methods with placeholder support */
-	exports.placeholder = {
-	  'bind': true,
-	  'bindKey': true,
-	  'curry': true,
-	  'curryRight': true,
-	  'partial': true,
-	  'partialRight': 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 = {
-	  'curryN': 'curry',
-	  'curryRightN': 'curryRight',
-	  'getOr': 'get',
-	  'trimChars': 'trim',
-	  'trimCharsEnd': 'trimEnd',
-	  'trimCharsStart': 'trimStart'
-	};
-
-	/** Used to track methods that skip `_.rearg`. */
-	exports.skipRearg = {
-	  'add': true,
-	  'assign': true,
-	  'assignIn': true,
-	  'concat': true,
-	  'difference': true,
-	  'gt': true,
-	  'gte': true,
-	  'lt': true,
-	  'lte': true,
-	  'matchesProperty': true,
-	  'merge': true,
-	  'partial': true,
-	  'partialRight': true,
-	  'random': true,
-	  'range': true,
-	  'rangeRight': true,
-	  'subtract': true,
-	  'zip': true,
-	  'zipObject': true
-	};
-
-
-/***/ }
-/******/ ])
-});
-;
--- a/dist/lodash.fp.min.js
+++ b/dist/lodash.fp.min.js
@@ -1,14 +0,0 @@
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-prop:"get",propOf:"propertyOf",propOr:"getOr",somePass:"overSome",unapply:"rest",unnest:"flatten",useWith:"overArgs",whereEq:"filter",zipObj:"zipObject"},e.aryMethod={1:["attempt","castArray","ceil","create","curry","curryRight","floor","fromPairs","invert","iteratee","memoize","method","methodOf","mixin","over","overEvery","overSome","rest","reverse","round","runInContext","spread","template","trim","trimEnd","trimStart","uniqueId","words"],2:["add","after","ary","assign","assignIn","at","before","bind","bindKey","chunk","cloneDeepWith","cloneWith","concat","countBy","curryN","curryRightN","debounce","defaults","defaultsDeep","delay","difference","drop","dropRight","dropRightWhile","dropWhile","endsWith","eq","every","filter","find","find","findIndex","findKey","findLast","findLastIndex","findLastKey","flatMap","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","merge","minBy","omit","omitBy","overArgs","pad","padEnd","padStart","parseInt","partial","partialRight","partition","pick","pickBy","pull","pullAll","pullAt","random","range","rangeRight","rearg","reject","remove","repeat","result","sampleSize","some","sortBy","sortedIndex","sortedIndexOf","sortedLastIndex","sortedLastIndexOf","sortedUniqBy","split","startsWith","subtract","sumBy","take","takeRight","takeRightWhile","takeWhile","tap","throttle","thru","times","trimChars","trimCharsEnd","trimCharsStart","truncate","union","uniqBy","uniqWith","unset","unzipWith","without","wrap","xor","zip","zipObject","zipObjectDeep"],
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--- a/dist/lodash.js
+++ b/dist/lodash.js
--- a/dist/lodash.min.js
+++ b/dist/lodash.min.js
@@ -1,121 +0,0 @@
-/**
- * @license
- * lodash 4.6.1 (Custom Build) lodash.com/license | Underscore.js 1.8.3 underscorejs.org/LICENSE
- * Build: `lodash -o ./dist/lodash.js`
- */
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-"\xd8":"O","\xf2":"o","\xf3":"o","\xf4":"o","\xf5":"o","\xf6":"o","\xf8":"o","\xd9":"U","\xda":"U","\xdb":"U","\xdc":"U","\xf9":"u","\xfa":"u","\xfb":"u","\xfc":"u","\xdd":"Y","\xfd":"y","\xff":"y","\xc6":"Ae","\xe6":"ae","\xde":"Th","\xfe":"th","\xdf":"ss"},Mn={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;","`":"&#96;"},Ln={"&amp;":"&","&lt;":"<","&gt;":">","&quot;":'"',"&#39;":"'","&#96;":"`"},$n={"function":true,object:true},Fn={"\\":"\\","'":"'","\n":"n","\r":"r","\u2028":"u2028","\u2029":"u2029"
-},Nn=parseFloat,Dn=parseInt,Zn=$n[typeof exports]&&exports&&!exports.nodeType?exports:q,qn=$n[typeof module]&&module&&!module.nodeType?module:q,Pn=qn&&qn.exports===Zn?Zn:q,Tn=I($n[typeof self]&&self),Kn=I($n[typeof window]&&window),Gn=I($n[typeof this]&&this),Vn=I(Zn&&qn&&typeof global=="object"&&global)||Kn!==(Gn&&Gn.window)&&Kn||Tn||Gn||Function("return this")(),Jn=Z();(Kn||Tn||{})._=Jn,typeof define=="function"&&typeof define.amd=="object"&&define.amd? define(function(){return Jn}):Zn&&qn?(Pn&&((qn.exports=Jn)._=Jn),
-Zn._=Jn):Vn._=Jn}).call(this);
--- a/dist/mapping.fp.js
+++ b/dist/mapping.fp.js
@@ -1,305 +0,0 @@
-(function webpackUniversalModuleDefinition(root, factory) {
-	if(typeof exports === 'object' && typeof module === 'object')
-		module.exports = factory();
-	else if(typeof define === 'function' && define.amd)
-		define([], factory);
-	else if(typeof exports === 'object')
-		exports["mapping"] = factory();
-	else
-		root["mapping"] = factory();
-})(this, function() {
-return /******/ (function(modules) { // webpackBootstrap
-/******/ 	// The module cache
-/******/ 	var installedModules = {};
-
-/******/ 	// The require function
-/******/ 	function __webpack_require__(moduleId) {
-
-/******/ 		// Check if module is in cache
-/******/ 		if(installedModules[moduleId])
-/******/ 			return installedModules[moduleId].exports;
-
-/******/ 		// Create a new module (and put it into the cache)
-/******/ 		var module = installedModules[moduleId] = {
-/******/ 			exports: {},
-/******/ 			id: moduleId,
-/******/ 			loaded: false
-/******/ 		};
-
-/******/ 		// Execute the module function
-/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
-
-/******/ 		// Flag the module as loaded
-/******/ 		module.loaded = true;
-
-/******/ 		// Return the exports of the module
-/******/ 		return module.exports;
-/******/ 	}
-
-
-/******/ 	// expose the modules object (__webpack_modules__)
-/******/ 	__webpack_require__.m = modules;
-
-/******/ 	// expose the module cache
-/******/ 	__webpack_require__.c = installedModules;
-
-/******/ 	// __webpack_public_path__
-/******/ 	__webpack_require__.p = "";
-
-/******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(0);
-/******/ })
-/************************************************************************/
-/******/ ([
-/* 0 */
-/***/ function(module, exports) {
-
-	/** Used to map aliases to their real names. */
-	exports.aliasToReal = {
-	  '__': 'placeholder',
-	  'all': 'some',
-	  'allPass': 'overEvery',
-	  'apply': 'spread',
-	  'assoc': 'set',
-	  'assocPath': 'set',
-	  'compose': 'flowRight',
-	  'contains': 'includes',
-	  'dissoc': 'unset',
-	  'dissocPath': 'unset',
-	  'each': 'forEach',
-	  'eachRight': 'forEachRight',
-	  'equals': 'isEqual',
-	  'extend': 'assignIn',
-	  'extendWith': 'assignInWith',
-	  'first': 'head',
-	  'init': 'initial',
-	  'mapObj': 'mapValues',
-	  'omitAll': 'omit',
-	  'nAry': 'ary',
-	  'path': 'get',
-	  'pathEq': 'matchesProperty',
-	  'pathOr': 'getOr',
-	  'pickAll': 'pick',
-	  'pipe': 'flow',
-	  'prop': 'get',
-	  'propOf': 'propertyOf',
-	  'propOr': 'getOr',
-	  'somePass': 'overSome',
-	  'unapply': 'rest',
-	  'unnest': 'flatten',
-	  'useWith': 'overArgs',
-	  'whereEq': 'filter',
-	  'zipObj': 'zipObject'
-	};
-
-	/** Used to map ary to method names. */
-	exports.aryMethod = {
-	  '1': [
-	    'attempt', 'castArray', 'ceil', 'create', 'curry', 'curryRight', 'floor',
-	    'fromPairs', 'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin',
-	    'over', 'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
-	    'spread', 'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
-	  ],
-	  '2': [
-	    'add', 'after', 'ary', 'assign', 'assignIn', 'at', 'before', 'bind', 'bindKey',
-	    'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
-	    'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
-	    'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq', 'every',
-	    'filter', 'find', 'find', 'findIndex', 'findKey', 'findLast', 'findLastIndex',
-	    'findLastKey', 'flatMap', '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', 'merge', 'minBy', 'omit',
-	    'omitBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt', 'partial',
-	    'partialRight', 'partition', 'pick', 'pickBy', 'pull', 'pullAll', 'pullAt',
-	    'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove', 'repeat', 'result',
-	    'sampleSize', 'some', 'sortBy', 'sortedIndex', 'sortedIndexOf', 'sortedLastIndex',
-	    'sortedLastIndexOf', 'sortedUniqBy', 'split', 'startsWith', 'subtract', 'sumBy',
-	    'take', 'takeRight', 'takeRightWhile', 'takeWhile', 'tap', 'throttle', 'thru',
-	    'times', 'trimChars', 'trimCharsEnd', 'trimCharsStart', 'truncate', 'union',
-	    'uniqBy', 'uniqWith', 'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip',
-	    'zipObject', 'zipObjectDeep'
-	  ],
-	  '3': [
-	    'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
-	    'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
-	    'isMatchWith', 'mergeWith', 'orderBy', 'pullAllBy', 'pullAllWith', '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 = {
-	  'assignWith': 2,
-	  'assignInWith': 2,
-	  'cloneDeepWith': 1,
-	  'cloneWith': 1,
-	  'dropRightWhile': 1,
-	  'dropWhile': 1,
-	  'every': 1,
-	  'filter': 1,
-	  'find': 1,
-	  'findIndex': 1,
-	  'findKey': 1,
-	  'findLast': 1,
-	  'findLastIndex': 1,
-	  'findLastKey': 1,
-	  'flatMap': 1,
-	  'forEach': 1,
-	  'forEachRight': 1,
-	  'forIn': 1,
-	  'forInRight': 1,
-	  'forOwn': 1,
-	  'forOwnRight': 1,
-	  'isEqualWith': 2,
-	  'isMatchWith': 2,
-	  'map': 1,
-	  'mapKeys': 1,
-	  'mapValues': 1,
-	  'partition': 1,
-	  'reduce': 2,
-	  'reduceRight': 2,
-	  'reject': 1,
-	  'remove': 1,
-	  'some': 1,
-	  'takeRightWhile': 1,
-	  'takeWhile': 1,
-	  'times': 1,
-	  'transform': 2
-	};
-
-	/** Used to map method names to iteratee rearg configs. */
-	exports.iterateeRearg = {
-	  'mapKeys': [1]
-	};
-
-	/** Used to map method names to rearg configs. */
-	exports.methodRearg = {
-	  'assignInWith': [1, 2, 0],
-	  'assignWith': [1, 2, 0],
-	  'getOr': [2, 1, 0],
-	  'isMatchWith': [2, 1, 0],
-	  'mergeWith': [1, 2, 0],
-	  'pullAllBy': [2, 1, 0],
-	  'pullAllWith': [2, 1, 0],
-	  'setWith': [3, 1, 2, 0],
-	  'sortedIndexBy': [2, 1, 0],
-	  'sortedLastIndexBy': [2, 1, 0],
-	  'updateWith': [3, 1, 2, 0],
-	  'zipWith': [1, 2, 0]
-	};
-
-	/** Used to map method names to spread configs. */
-	exports.methodSpread = {
-	  'partial': 1,
-	  'partialRight': 1
-	};
-
-	/** 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,
-	    'assignIn': true,
-	    'assignInWith': true,
-	    'assignWith': true,
-	    'defaults': true,
-	    'defaultsDeep': true,
-	    'merge': true,
-	    'mergeWith': true
-	  },
-	  'set': {
-	    'set': true,
-	    'setWith': true,
-	    'unset': true,
-	    'update': true,
-	    'updateWith': true
-	  }
-	};
-
-	/** Used to track methods with placeholder support */
-	exports.placeholder = {
-	  'bind': true,
-	  'bindKey': true,
-	  'curry': true,
-	  'curryRight': true,
-	  'partial': true,
-	  'partialRight': 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 = {
-	  'curryN': 'curry',
-	  'curryRightN': 'curryRight',
-	  'getOr': 'get',
-	  'trimChars': 'trim',
-	  'trimCharsEnd': 'trimEnd',
-	  'trimCharsStart': 'trimStart'
-	};
-
-	/** Used to track methods that skip `_.rearg`. */
-	exports.skipRearg = {
-	  'add': true,
-	  'assign': true,
-	  'assignIn': true,
-	  'concat': true,
-	  'difference': true,
-	  'gt': true,
-	  'gte': true,
-	  'lt': true,
-	  'lte': true,
-	  'matchesProperty': true,
-	  'merge': true,
-	  'partial': true,
-	  'partialRight': true,
-	  'random': true,
-	  'range': true,
-	  'rangeRight': true,
-	  'subtract': true,
-	  'zip': true,
-	  'zipObject': true
-	};
-
-
-/***/ }
-/******/ ])
-});
-;
--- a/doc/README.md
+++ b/doc/README.md
--- a/fp/_baseConvert.js
+++ b/fp/_baseConvert.js
@@ -1,319 +0,0 @@
-var mapping = require('./_mapping'),
-    mutateMap = mapping.mutate,
-    fallbackHolder = {};
-
-/**
- * The base implementation of `convert` which accepts a `util` object of methods
- * required to perform conversions.
- *
- * @param {Object} util The util object.
- * @param {string} name The name of the function to wrap.
- * @param {Function} func The function to wrap.
- * @param {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 setPlaceholder,
-      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 forceRearg = ('rearg' in options) && options.rearg,
-      placeholder = isLib ? func : fallbackHolder;
-
-  var helpers = isLib ? func : {
-    'ary': util.ary,
-    'clone': util.clone,
-    'curry': util.curry,
-    'forEach': util.forEach,
-    'isArray': util.isArray,
-    'isFunction': util.isFunction,
-    'iteratee': util.iteratee,
-    'keys': util.keys,
-    'rearg': util.rearg,
-    'spread': util.spread,
-    'toPath': util.toPath
-  };
-
-  var ary = helpers.ary,
-      clone = helpers.clone,
-      curry = helpers.curry,
-      each = helpers.forEach,
-      isArray = helpers.isArray,
-      isFunction = helpers.isFunction,
-      keys = helpers.keys,
-      rearg = helpers.rearg,
-      spread = helpers.spread,
-      toPath = helpers.toPath;
-
-  var aryMethodKeys = keys(mapping.aryMethod);
-
-  var baseArity = function(func, n) {
-    return n == 2
-      ? function(a, b) { return func.apply(undefined, arguments); }
-      : function(a) { return func.apply(undefined, arguments); };
-  };
-
-  var baseAry = function(func, n) {
-    return n == 2
-      ? function(a, b) { return func(a, b); }
-      : function(a) { return func(a); };
-  };
-
-  var cloneArray = function(array) {
-    var length = array ? array.length : 0,
-        result = Array(length);
-
-    while (length--) {
-      result[length] = array[length];
-    }
-    return result;
-  };
-
-  var cloneByPath = function(object, path) {
-    path = toPath(path);
-
-    var index = -1,
-        length = path.length,
-        result = clone(Object(object)),
-        nested = result;
-
-    while (nested != null && ++index < length) {
-      var key = path[index],
-          value = nested[key];
-
-      if (value != null) {
-        nested[key] = clone(Object(value));
-      }
-      nested = nested[key];
-    }
-    return result;
-  };
-
-  var createCloner = function(func) {
-    return function(object) {
-      return func({}, object);
-    };
-  };
-
-  var immutWrap = function(func, cloner) {
-    return function() {
-      var length = arguments.length;
-      if (!length) {
-        return result;
-      }
-      var args = Array(length);
-      while (length--) {
-        args[length] = arguments[length];
-      }
-      var result = args[0] = cloner.apply(undefined, args);
-      func.apply(undefined, args);
-      return result;
-    };
-  };
-
-  var iterateeAry = function(func, n) {
-    return overArg(func, function(func) {
-      return typeof func == 'function' ? baseAry(func, n) : func;
-    });
-  };
-
-  var iterateeRearg = function(func, indexes) {
-    return overArg(func, function(func) {
-      var n = indexes.length;
-      return baseArity(rearg(baseAry(func, n), indexes), n);
-    });
-  };
-
-  var overArg = function(func, iteratee, retArg) {
-    return function() {
-      var length = arguments.length;
-      if (!length) {
-        return func();
-      }
-      var args = Array(length);
-      while (length--) {
-        args[length] = arguments[length];
-      }
-      var index = config.rearg ? 0 : (length - 1);
-      args[index] = iteratee(args[index]);
-      return func.apply(undefined, args);
-    };
-  };
-
-  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 methods = [],
-            methodNames = [];
-
-        each(keys(source), function(key) {
-          var value = source[key];
-          if (isFunction(value)) {
-            methodNames.push(key);
-            methods.push(func.prototype[key]);
-          }
-        });
-
-        mixin(func, Object(source));
-
-        each(methodNames, function(methodName, index) {
-          var method = methods[index];
-          if (isFunction(method)) {
-            func.prototype[methodName] = method;
-          } else {
-            delete func.prototype[methodName];
-          }
-        });
-        return func;
-      };
-    },
-    'runInContext': function(runInContext) {
-      return function(context) {
-        return baseConvert(util, runInContext(context), options);
-      };
-    }
-  };
-
-  var wrap = function(name, func) {
-    name = mapping.aliasToReal[name] || name;
-    var wrapper = wrappers[name];
-    if (wrapper) {
-      return wrapper(func);
-    }
-    var wrapped = func;
-    if (config.immutable) {
-      if (mutateMap.array[name]) {
-        wrapped = immutWrap(func, cloneArray);
-      }
-      else if (mutateMap.object[name]) {
-        wrapped = immutWrap(func, createCloner(func));
-      }
-      else if (mutateMap.set[name]) {
-        wrapped = immutWrap(func, cloneByPath);
-      }
-    }
-    var result;
-    each(aryMethodKeys, function(aryKey) {
-      each(mapping.aryMethod[aryKey], function(otherName) {
-        if (name == otherName) {
-          var aryN = !isLib && mapping.iterateeAry[name],
-              reargIndexes = mapping.iterateeRearg[name],
-              spreadStart = mapping.methodSpread[name];
-
-          result = wrapped;
-          if (config.fixed) {
-            result = spreadStart === undefined
-              ? ary(result, aryKey)
-              : spread(result, spreadStart);
-          }
-          if (config.rearg && aryKey > 1 && (forceRearg || !mapping.skipRearg[name])) {
-            result = rearg(result, mapping.methodRearg[name] || mapping.aryRearg[aryKey]);
-          }
-          if (config.cap) {
-            if (reargIndexes) {
-              result = iterateeRearg(result, reargIndexes);
-            } else if (aryN) {
-              result = iterateeAry(result, aryN);
-            }
-          }
-          if (config.curry && aryKey > 1) {
-            result = curry(result, aryKey);
-          }
-          return false;
-        }
-      });
-      return !result;
-    });
-
-    result || (result = wrapped);
-    if (mapping.placeholder[name]) {
-      setPlaceholder = true;
-      func.placeholder = result.placeholder = placeholder;
-    }
-    return result;
-  };
-
-  if (!isObj) {
-    return wrap(name, func);
-  }
-  var _ = func;
-
-  // Iterate over methods for the current 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)]);
-      }
-    });
-  });
-
-  // Assign to `_` leaving `_.prototype` unchanged to allow chaining.
-  each(pairs, function(pair) {
-    _[pair[0]] = pair[1];
-  });
-
-  if (setPlaceholder) {
-    _.placeholder = placeholder;
-  }
-  // Wrap the lodash method and its 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
@@ -1,17 +0,0 @@
-var baseConvert = require('./_baseConvert');
-
-/**
- * Converts `lodash` to an immutable auto-curried iteratee-first data-last version.
- *
- * @param {Function} lodash The lodash function.
- * @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') {
-  _ = browserConvert(_.runInContext());
-}
-module.exports = browserConvert;
--- a/fp/_mapping.js
+++ b/fp/_mapping.js
@@ -1,243 +0,0 @@
-/** Used to map aliases to their real names. */
-exports.aliasToReal = {
-  '__': 'placeholder',
-  'all': 'some',
-  'allPass': 'overEvery',
-  'apply': 'spread',
-  'assoc': 'set',
-  'assocPath': 'set',
-  'compose': 'flowRight',
-  'contains': 'includes',
-  'dissoc': 'unset',
-  'dissocPath': 'unset',
-  'each': 'forEach',
-  'eachRight': 'forEachRight',
-  'equals': 'isEqual',
-  'extend': 'assignIn',
-  'extendWith': 'assignInWith',
-  'first': 'head',
-  'init': 'initial',
-  'mapObj': 'mapValues',
-  'omitAll': 'omit',
-  'nAry': 'ary',
-  'path': 'get',
-  'pathEq': 'matchesProperty',
-  'pathOr': 'getOr',
-  'pickAll': 'pick',
-  'pipe': 'flow',
-  'prop': 'get',
-  'propOf': 'propertyOf',
-  'propOr': 'getOr',
-  'somePass': 'overSome',
-  'unapply': 'rest',
-  'unnest': 'flatten',
-  'useWith': 'overArgs',
-  'whereEq': 'filter',
-  'zipObj': 'zipObject'
-};
-
-/** Used to map ary to method names. */
-exports.aryMethod = {
-  '1': [
-    'attempt', 'castArray', 'ceil', 'create', 'curry', 'curryRight', 'floor',
-    'fromPairs', 'invert', 'iteratee', 'memoize', 'method', 'methodOf', 'mixin',
-    'over', 'overEvery', 'overSome', 'rest', 'reverse', 'round', 'runInContext',
-    'spread', 'template', 'trim', 'trimEnd', 'trimStart', 'uniqueId', 'words'
-  ],
-  '2': [
-    'add', 'after', 'ary', 'assign', 'assignIn', 'at', 'before', 'bind', 'bindKey',
-    'chunk', 'cloneDeepWith', 'cloneWith', 'concat', 'countBy', 'curryN',
-    'curryRightN', 'debounce', 'defaults', 'defaultsDeep', 'delay', 'difference',
-    'drop', 'dropRight', 'dropRightWhile', 'dropWhile', 'endsWith', 'eq', 'every',
-    'filter', 'find', 'find', 'findIndex', 'findKey', 'findLast', 'findLastIndex',
-    'findLastKey', 'flatMap', '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', 'merge', 'minBy', 'omit',
-    'omitBy', 'overArgs', 'pad', 'padEnd', 'padStart', 'parseInt', 'partial',
-    'partialRight', 'partition', 'pick', 'pickBy', 'pull', 'pullAll', 'pullAt',
-    'random', 'range', 'rangeRight', 'rearg', 'reject', 'remove', 'repeat', 'result',
-    'sampleSize', 'some', 'sortBy', 'sortedIndex', 'sortedIndexOf', 'sortedLastIndex',
-    'sortedLastIndexOf', 'sortedUniqBy', 'split', 'startsWith', 'subtract', 'sumBy',
-    'take', 'takeRight', 'takeRightWhile', 'takeWhile', 'tap', 'throttle', 'thru',
-    'times', 'trimChars', 'trimCharsEnd', 'trimCharsStart', 'truncate', 'union',
-    'uniqBy', 'uniqWith', 'unset', 'unzipWith', 'without', 'wrap', 'xor', 'zip',
-    'zipObject', 'zipObjectDeep'
-  ],
-  '3': [
-    'assignInWith', 'assignWith', 'clamp', 'differenceBy', 'differenceWith',
-    'getOr', 'inRange', 'intersectionBy', 'intersectionWith', 'isEqualWith',
-    'isMatchWith', 'mergeWith', 'orderBy', 'pullAllBy', 'pullAllWith', '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 = {
-  'assignWith': 2,
-  'assignInWith': 2,
-  'cloneDeepWith': 1,
-  'cloneWith': 1,
-  'dropRightWhile': 1,
-  'dropWhile': 1,
-  'every': 1,
-  'filter': 1,
-  'find': 1,
-  'findIndex': 1,
-  'findKey': 1,
-  'findLast': 1,
-  'findLastIndex': 1,
-  'findLastKey': 1,
-  'flatMap': 1,
-  'forEach': 1,
-  'forEachRight': 1,
-  'forIn': 1,
-  'forInRight': 1,
-  'forOwn': 1,
-  'forOwnRight': 1,
-  'isEqualWith': 2,
-  'isMatchWith': 2,
-  'map': 1,
-  'mapKeys': 1,
-  'mapValues': 1,
-  'partition': 1,
-  'reduce': 2,
-  'reduceRight': 2,
-  'reject': 1,
-  'remove': 1,
-  'some': 1,
-  'takeRightWhile': 1,
-  'takeWhile': 1,
-  'times': 1,
-  'transform': 2
-};
-
-/** Used to map method names to iteratee rearg configs. */
-exports.iterateeRearg = {
-  'mapKeys': [1]
-};
-
-/** Used to map method names to rearg configs. */
-exports.methodRearg = {
-  'assignInWith': [1, 2, 0],
-  'assignWith': [1, 2, 0],
-  'getOr': [2, 1, 0],
-  'isMatchWith': [2, 1, 0],
-  'mergeWith': [1, 2, 0],
-  'pullAllBy': [2, 1, 0],
-  'pullAllWith': [2, 1, 0],
-  'setWith': [3, 1, 2, 0],
-  'sortedIndexBy': [2, 1, 0],
-  'sortedLastIndexBy': [2, 1, 0],
-  'updateWith': [3, 1, 2, 0],
-  'zipWith': [1, 2, 0]
-};
-
-/** Used to map method names to spread configs. */
-exports.methodSpread = {
-  'partial': 1,
-  'partialRight': 1
-};
-
-/** 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,
-    'assignIn': true,
-    'assignInWith': true,
-    'assignWith': true,
-    'defaults': true,
-    'defaultsDeep': true,
-    'merge': true,
-    'mergeWith': true
-  },
-  'set': {
-    'set': true,
-    'setWith': true,
-    'unset': true,
-    'update': true,
-    'updateWith': true
-  }
-};
-
-/** Used to track methods with placeholder support */
-exports.placeholder = {
-  'bind': true,
-  'bindKey': true,
-  'curry': true,
-  'curryRight': true,
-  'partial': true,
-  'partialRight': 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 = {
-  'curryN': 'curry',
-  'curryRightN': 'curryRight',
-  'getOr': 'get',
-  'trimChars': 'trim',
-  'trimCharsEnd': 'trimEnd',
-  'trimCharsStart': 'trimStart'
-};
-
-/** Used to track methods that skip `_.rearg`. */
-exports.skipRearg = {
-  'add': true,
-  'assign': true,
-  'assignIn': true,
-  'concat': true,
-  'difference': true,
-  'gt': true,
-  'gte': true,
-  'lt': true,
-  'lte': true,
-  'matchesProperty': true,
-  'merge': true,
-  'partial': true,
-  'partialRight': true,
-  'random': true,
-  'range': true,
-  'rangeRight': true,
-  'subtract': true,
-  'zip': true,
-  'zipObject': true
-};
--- a/lib/common/minify.js
+++ b/lib/common/minify.js
@@ -1,26 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    fs = require('fs-extra'),
-    uglify = require('uglify-js');
-
-var uglifyOptions = require('./uglify.options');
-
-/*----------------------------------------------------------------------------*/
-
-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');
-  }
-  var 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
@@ -1,16 +0,0 @@
-module.exports = {
-  'compress': {
-    'pure_getters': true,
-    'unsafe': true,
-    'unsafe_comps': true,
-    'warnings': false
-  },
-  'mangle': {
-    'except': ['define']
-  },
-  'output': {
-    'ascii_only': true,
-    'comments': /^!|@cc_on|@license|@preserve/i,
-    'max_line_len': 500
-  }
-};
--- a/lib/common/util.js
+++ b/lib/common/util.js
@@ -1,36 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    fs = require('fs-extra'),
-    glob = require('glob'),
-    path = require('path');
-
-var minify = require('../common/minify.js');
-
-/*----------------------------------------------------------------------------*/
-
-function copyFile(srcPath, destPath) {
-  return _.partial(fs.copy, srcPath, destPath);
-}
-
-function globTemplate(pattern) {
-  return _.transform(glob.sync(pattern), function(result, filePath) {
-    var key = path.basename(filePath, path.extname(filePath));
-    result[key] = _.template(fs.readFileSync(filePath, 'utf8'));
-  }, {});
-}
-
-function minFile(srcPath, destPath) {
-  return _.partial(minify, srcPath, destPath);
-}
-
-function writeFile(filePath, data) {
-  return _.partial(fs.writeFile, filePath, data);
-}
-
-module.exports = {
-  'copyFile': copyFile,
-  'globTemplate': globTemplate,
-  'minFile': minFile,
-  'writeFile': writeFile
-};
--- a/lib/fp/build-dist.js
+++ b/lib/fp/build-dist.js
@@ -1,55 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    async = require('async'),
-    path = require('path'),
-    webpack = require('webpack');
-
-var util = require('../common/util');
-
-var basePath = path.join(__dirname, '..', '..'),
-    distPath = path.join(basePath, 'dist'),
-    fpPath = path.join(basePath, 'fp'),
-    filename = 'lodash.fp.js';
-
-var 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
-  ]
-};
-
-var mappingConfig = {
-  'entry': path.join(fpPath, '_mapping.js'),
-  'output': {
-    'path': distPath,
-    'filename': 'mapping.fp.js',
-    'library': 'mapping',
-    'libraryTarget': 'umd'
-  }
-};
-
-/*----------------------------------------------------------------------------*/
-
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
-}
-
-function build() {
-  async.series([
-    _.partial(webpack, mappingConfig),
-    _.partial(webpack, fpConfig),
-    util.minFile(path.join(distPath, filename))
-  ], onComplete);
-}
-
-build();
--- a/lib/fp/build-doc.js
+++ b/lib/fp/build-doc.js
@@ -1,64 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    fs = require('fs-extra'),
-    path = require('path'),
-    util = require('../common/util');
-
-var mapping = require('../../fp/_mapping'),
-    templatePath = path.join(__dirname, 'template/doc'),
-    template = util.globTemplate(path.join(templatePath, '*.jst'));
-
-var argNames = ['a', 'b', 'c', 'd'];
-
-var templateData = {
-  'mapping': mapping,
-  'toArgOrder': toArgOrder,
-  'toFuncList': toFuncList
-};
-
-function toArgOrder(array) {
-  var reordered = [];
-  _.each(array, function(newIndex, index) {
-    reordered[newIndex] = argNames[index];
-  });
-  return '`(' + reordered.join(', ') + ')`';
-}
-
-function toFuncList(array) {
-  var chunks = _.chunk(array.slice().sort(), 5),
-      lastChunk = _.last(chunks),
-      last = lastChunk ? lastChunk.pop() : undefined;
-
-  chunks = _.reject(chunks, _.isEmpty);
-  lastChunk = _.last(chunks);
-
-  var result = '`' + _.map(chunks, function(chunk) {
-    return chunk.join('`, `') + '`';
-  }).join(',\n`');
-
-  if (last == null) {
-    return result;
-  }
-  if (_.size(chunks) > 1 || _.size(lastChunk) > 1) {
-    result += ',';
-  }
-  result += ' &';
-  result += _.size(lastChunk) < 5 ? ' ' : '\n';
-  return result + '`' + last + '`';
-}
-
-/*----------------------------------------------------------------------------*/
-
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
-}
-
-function build(target) {
-  target = path.resolve(target);
-  fs.writeFile(target, template.wiki(templateData), onComplete);
-}
-
-build(_.last(process.argv));
--- a/lib/fp/build-modules.js
+++ b/lib/fp/build-modules.js
@@ -1,120 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    async = require('async'),
-    glob = require('glob'),
-    path = require('path');
-
-var util = require('../common/util');
-
-var mapping = require('../../fp/_mapping'),
-    templatePath = path.join(__dirname, 'template/modules'),
-    template = util.globTemplate(path.join(templatePath, '*.jst'));
-
-var aryMethods = _.union(
-  mapping.aryMethod[1],
-  mapping.aryMethod[2],
-  mapping.aryMethod[3],
-  mapping.aryMethod[4]
-);
-
-var categories = [
-  'array',
-  'collection',
-  'date',
-  'function',
-  'lang',
-  'math',
-  'number',
-  'object',
-  'seq',
-  'string',
-  'util'
-];
-
-var ignored = [
-  '_*.js',
-  'core.js',
-  'core.min.js',
-  'fp.js',
-  'index.js',
-  'lodash.js',
-  'lodash.min.js'
-];
-
-function isAlias(funcName) {
-  return _.has(mapping.aliasToReal, funcName);
-}
-
-function isCategory(funcName) {
-  return _.includes(categories, funcName);
-}
-
-function isThru(funcName) {
-  return !_.includes(aryMethods, funcName);
-}
-
-function getTemplate(moduleName) {
-  var data = {
-    'name': _.result(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);
-}
-
-/*----------------------------------------------------------------------------*/
-
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
-}
-
-function build(target) {
-  target = path.resolve(target);
-
-  var fpPath = path.join(target, 'fp');
-
-  // Glob existing lodash module paths.
-  var modulePaths = glob.sync(path.join(target, '*.js'), {
-    'nodir': true,
-    'ignore': ignored.map(function(filename) {
-      return path.join(target, filename);
-    })
-  });
-
-  // Add FP alias and remapped module paths.
-  _.each([mapping.aliasToReal, mapping.remap], function(data) {
-    _.forOwn(data, function(realName, alias) {
-      var modulePath = path.join(target, alias + '.js');
-      if (!_.startsWith(alias, '_') &&
-          !_.includes(modulePaths, modulePath)) {
-        modulePaths.push(modulePath);
-      }
-    });
-  });
-
-  var actions = modulePaths.map(function(modulePath) {
-    var moduleName = path.basename(modulePath, '.js');
-    return util.writeFile(path.join(fpPath, moduleName + '.js'), getTemplate(moduleName));
-  });
-
-  actions.unshift(util.copyFile(path.join(__dirname, '../../fp'), fpPath));
-  actions.push(util.writeFile(path.join(target, 'fp.js'), template.fp()));
-  actions.push(util.writeFile(path.join(fpPath, 'convert.js'), template.convert()));
-  actions.push(util.writeFile(path.join(fpPath, '_util.js'), template._util()));
-
-  async.series(actions, onComplete);
-}
-
-build(_.last(process.argv));
--- a/lib/fp/template/doc/wiki.jst
+++ b/lib/fp/template/doc/wiki.jst
@@ -1,135 +0,0 @@
-## lodash/fp
-
-The `lodash/fp` module is 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='path/to/lodash.js'></script>
-<script src='path/to/lodash.fp.js'></script>
-```
-
-In Node.js:
-```js
-// Load the fp build.
-var _ = 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');
-```
-
-## Convert
-
-Although `lodash/fp` & its method modules come pre-converted, there are times when
-you may want to convert another lodash package or create a customized conversion.
-That’s when the `convert` module comes in handy.
-
-```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());
-```
-
-It’s even customizable.
-```js
-// Every option is `true` by default.
-var filter = convert('filter', _.filter, {
-  // 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
-});
-
-// Specify `cap` of `false` to create a function that doesn’t cap iteratee arguments.
-var filter = convert('filter', _.filter, { 'cap': false });
-
-filter(function(value, index) {
-  return index % 2 == 0;
-})(['a', 'b', 'c']);
-// => ['a', 'c']
-```
-
-## 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
-
-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 invoked with one argument: (key)
-
-#### Fixed Arity
-
-Methods with a fixed arity of one:<br>
-<%= toFuncList(mapping.aryMethod[1]) %>
-
-Methods with a fixed arity of two:<br>
-<%= toFuncList(mapping.aryMethod[2]) %>
-
-Methods with a fixed arity of three:<br>
-<%= toFuncList(mapping.aryMethod[3]) %>
-
-Methods with a fixed arity of four:<br>
-<%= toFuncList(mapping.aryMethod[4]) %>
-
-#### Rearranged Arguments
-
-Methods with a fixed arity of two have an argument order of:<br>
-<%= toArgOrder(mapping.aryRearg[2]) %>
-
-Methods with a fixed arity of three have an argument order of:<br>
-<%= toArgOrder(mapping.aryRearg[3]) %>
-
-Methods with a fixed arity of four have an argument order of:<br>
-<%= toArgOrder(mapping.aryRearg[4]) %>
-
-Methods with custom argument orders:<br>
-<%= _.map(mapping.methodRearg, function(orders, methodName) {
-  return ' * `_.' + methodName + '` has an order of ' + toArgOrder(orders);
-}).join('\n') %>
-
-Methods with unchanged argument orders:<br>
-<%= toFuncList(_.keys(mapping.skipRearg)) %>
-
-The methods `partial` & `partialRight` accept an array of arguments to partially
-apply as their second parameter.
-
-#### New Methods
-
-Methods created to accommodate Lodash’s variadic methods:<br>
-<%= toFuncList(_.keys(mapping.remap)) %>
-
-#### Aliases
-
-There are <%= _.size(mapping.aliasToReal) %> method aliases:<br>
-<%= _.map(mapping.aliasToReal, function(realName, alias) {
-  return ' * `_.' + alias + '` is an alias of `_.' + realName + '`';
-}).join('\n') %>
--- a/lib/fp/template/modules/_util.jst
+++ b/lib/fp/template/modules/_util.jst
@@ -1,13 +0,0 @@
-module.exports = {
-  'ary': require('../ary'),
-  'clone': require('../clone'),
-  'curry': require('../curry'),
-  'forEach': require('../_arrayEach'),
-  'isArray': require('../isArray'),
-  'isFunction': require('../isFunction'),
-  'iteratee': require('../iteratee'),
-  'keys': require('../_baseKeys'),
-  'rearg': require('../rearg'),
-  'spread': require('../spread'),
-  'toPath': require('../toPath')
-};
--- a/lib/fp/template/modules/alias.jst
+++ b/lib/fp/template/modules/alias.jst
@@ -1 +0,0 @@
-module.exports = require('./<%= name %>');
--- a/lib/fp/template/modules/category.jst
+++ b/lib/fp/template/modules/category.jst
@@ -1,2 +0,0 @@
-var convert = require('./convert');
-module.exports = convert(require('../<%= name %>'));
--- a/lib/fp/template/modules/convert.jst
+++ b/lib/fp/template/modules/convert.jst
@@ -1,17 +0,0 @@
-var baseConvert = require('./_baseConvert'),
-    util = require('./_util');
-
-/**
- * Converts `func` of `name` to an immutable auto-curried iteratee-first data-last
- * version. 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
@@ -1,2 +0,0 @@
-var _ = require('./lodash.min').runInContext();
-module.exports = require('./fp/_baseConvert')(_, _);
--- a/lib/fp/template/modules/module.jst
+++ b/lib/fp/template/modules/module.jst
@@ -1,2 +0,0 @@
-var convert = require('./convert');
-module.exports = convert('<%= name %>', require('../<%= _.result(mapping.remap, name, name) %>'));
--- a/lib/fp/template/modules/thru.jst
+++ b/lib/fp/template/modules/thru.jst
@@ -1 +0,0 @@
-module.exports = require('../<%= name %>');
--- a/lib/main/build-dist.js
+++ b/lib/main/build-dist.js
@@ -1,31 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    async = require('async'),
-    path = require('path');
-
-var util = require('../common/util');
-
-var basePath = path.join(__dirname, '..', '..'),
-    distPath = path.join(basePath, 'dist'),
-    filename = 'lodash.js';
-
-var baseLodash = path.join(basePath, filename),
-    distLodash = path.join(distPath, filename);
-
-/*----------------------------------------------------------------------------*/
-
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
-}
-
-function build() {
-  async.series([
-    util.copyFile(baseLodash, distLodash),
-    util.minFile(distLodash)
-  ], onComplete);
-}
-
-build();
--- a/lib/main/build-doc.js
+++ b/lib/main/build-doc.js
@@ -1,55 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    docdown = require('docdown'),
-    fs = require('fs-extra'),
-    path = require('path');
-
-var basePath = path.join(__dirname, '..', '..'),
-    docPath = path.join(basePath, 'doc'),
-    readmePath = path.join(docPath, 'README.md');
-
-var pkg = require('../../package.json'),
-    version = pkg.version;
-
-var config = {
-  'base': {
-    'entryLinks': [
-      '<% if (name == "templateSettings" || !/^(?:methods|properties|seq)$/i.test(category)) {' +
-      'print("[&#x24C3;](https://www.npmjs.com/package/lodash." + name.toLowerCase() + " \\"See the npm package\\")")' +
-      '} %>'
-    ],
-    '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': {
-    'hash': 'github'
-  },
-  'site': {
-    'tocLink': '#docs'
-  }
-};
-
-function postprocess(string) {
-  // Fix docdown bug by wrapping symbol property identifiers in brackets.
-  return string.replace(/\.(Symbol\.(?:[a-z]+[A-Z]?)+)/g, '[$1]');
-}
-
-/*----------------------------------------------------------------------------*/
-
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
-}
-
-function build(type) {
-  var options = _.defaults({}, config.base, config[type]),
-      markdown = docdown(options);
-
-  fs.writeFile(readmePath, postprocess(markdown), onComplete);
-}
-
-build(_.last(process.argv));
--- a/lib/main/build-modules.js
+++ b/lib/main/build-modules.js
@@ -1,34 +0,0 @@
-'use strict';
-
-var _ = require('lodash'),
-    async = require('async'),
-    path = require('path');
-
-var util = require('../common/util');
-
-var basePath = path.join(__dirname, '..', '..'),
-    distPath = path.join(basePath, 'dist');
-
-var 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']
-];
-
-/*----------------------------------------------------------------------------*/
-
-function onComplete(error) {
-  if (error) {
-    throw error;
-  }
-}
-
-function build(target) {
-  var actions = _.map(filePairs, function(pair) {
-    return util.copyFile(pair[0], path.join(target, pair[1]));
-  });
-
-  async.series(actions, onComplete);
-}
-
-build(_.last(process.argv));
--- a/lodash.js
+++ b/lodash.js
--- a/package.json
+++ b/package.json
@@ -1,50 +1,50 @@
 {
  "name": "lodash",
-  "version": "4.6.1",
-  "main": "lodash.js",
+  "version": "5.0.0",
+  "license": "MIT",
  "private": true,
-  "devDependencies": {
-    "async": "^1.5.2",
-    "benchmark": "^2.1.0",
-    "chalk": "^1.1.1",
-    "codecov.io": "~0.1.6",
-    "coveralls": "^2.11.8",
-    "curl-amd": "~0.8.12",
-    "docdown": "~0.4.1",
-    "dojo": "^1.10.4",
-    "ecstatic": "^1.4.0",
-    "fs-extra": "~0.26.5",
-    "glob": "^7.0.0",
-    "istanbul": "0.4.2",
-    "jquery": "^2.2.1",
-    "jscs": "^2.10.1",
-    "lodash": "4.5.0",
-    "platform": "^1.3.1",
-    "qunit-extras": "^1.5.0",
-    "qunitjs": "~1.22.0",
-    "request": "^2.69.0",
-    "requirejs": "^2.1.22",
-    "sauce-tunnel": "^2.4.0",
-    "uglify-js": "2.6.2",
-    "webpack": "^1.12.14"
-  },
+  "main": "dist/lodash.js",
+  "sideEffects": false,
  "scripts": {
-    "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",
-    "doc:fp": "node lib/fp/build-doc",
-    "doc:site": "node lib/main/build-doc 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:fp": "node test/test-fp",
-    "test:main": "node test/test"
-  }
+    "prepare": "husky install",
+    "lint": "eslint ./src/**/*.ts"
+  },
+  "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"
+  },
+  "lint-staged": {
+    "src/**/*.{ts}": [
+      "eslint --fix"
+    ]
+  },
+  "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
@@ -1,131 +0,0 @@
-;(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 = {};
-
-  /*--------------------------------------------------------------------------*/
-
-  /**
-   * Registers an event listener on an element.
-   *
-   * @private
-   * @param {Element} element The element.
-   * @param {string} eventName The name of the event.
-   * @param {Function} handler The event handler.
-   * @returns {Element} The element.
-   */
-  function addListener(element, eventName, handler) {
-    if (typeof element.addEventListener != 'undefined') {
-      element.addEventListener(eventName, handler, false);
-    } else if (typeof element.attachEvent != 'undefined') {
-      element.attachEvent('on' + eventName, handler);
-    }
-  }
-
-  /*--------------------------------------------------------------------------*/
-
-  // Initialize controls.
-  addListener(window, 'load', function() {
-    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</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;
-    }());
-
-    addListener(buildList, 'change', eventHandler);
-    addListener(otherList, '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
@@ -1,69 +0,0 @@
-<!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: 2em;
-      }
-      #perf-toolbar {
-        background-color: #EEE;
-        color: #5E740B;
-        font-family: "Helvetica Neue Light", "HelveticaNeue-Light", "Helvetica Neue", Calibri, Helvetica, Arial, sans-serif;
-        font-size: small;
-        padding: 0.5em 0 0.5em 2em;
-        overflow: hidden;
-      }
-    </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
@@ -0,0 +1,18 @@
+'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
@@ -0,0 +1,88 @@
+/** 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
@@ -0,0 +1,103 @@
+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
@@ -0,0 +1,120 @@
+
+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
@@ -0,0 +1,52 @@
+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
@@ -0,0 +1,93 @@
+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
@@ -0,0 +1,15 @@
+/**
+ * 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
@@ -0,0 +1,15 @@
+/**
+ * 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
@@ -0,0 +1,21 @@
+/**
+ * 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
@@ -0,0 +1,20 @@
+/**
+ * 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
@@ -0,0 +1,17 @@
+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
@@ -0,0 +1,23 @@
+/**
+ * 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
@@ -0,0 +1,43 @@
+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
@@ -0,0 +1,25 @@
+/**
+ * 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
@@ -0,0 +1,23 @@
+/**
+ * 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
@@ -0,0 +1,12 @@
+/**
+ * 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
@@ -0,0 +1,12 @@
+/**
+ * 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
@@ -0,0 +1,20 @@
+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
@@ -0,0 +1,27 @@
+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
@@ -0,0 +1,21 @@
+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
@@ -0,0 +1,23 @@
+/**
+ * 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
@@ -0,0 +1,23 @@
+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
@@ -0,0 +1,241 @@
+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
@@ -0,0 +1,16 @@
+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
@@ -0,0 +1,27 @@
+/**
+ * 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
@@ -0,0 +1,63 @@
+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
@@ -0,0 +1,31 @@
+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
@@ -0,0 +1,30 @@
+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
@@ -0,0 +1,23 @@
+/**
+ * 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
@@ -0,0 +1,22 @@
+/**
+ * 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
@@ -0,0 +1,37 @@
+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
@@ -0,0 +1,27 @@
+/**
+ * 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
@@ -0,0 +1,16 @@
+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
@@ -0,0 +1,16 @@
+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
@@ -0,0 +1,25 @@
+/**
+ * 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
@@ -0,0 +1,24 @@
+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
@@ -0,0 +1,14 @@
+/**
+ * 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
@@ -0,0 +1,20 @@
+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
@@ -0,0 +1,23 @@
+/**
+ * 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
@@ -0,0 +1,72 @@
+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
@@ -0,0 +1,28 @@
+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/src/.internal/baseIsEqualDeep.ts
+++ b/src/.internal/baseIsEqualDeep.ts
@@ -0,0 +1,79 @@
+import Stack from './Stack.js'
+import equalArrays from './equalArrays.js'
+import equalByTag from './equalByTag.js'
+import equalObjects from './equalObjects.js'
+import getTag from './getTag.js'
+import isBuffer from '../isBuffer.js'
+import isTypedArray from '../isTypedArray.js'
+
+/** Used to compose bitmasks for value comparisons. */
+const COMPARE_PARTIAL_FLAG = 1
+
+/** `Object#toString` result references. */
+const argsTag = '[object Arguments]'
+const arrayTag = '[object Array]'
+const objectTag = '[object Object]'
+
+/** Used to check objects for own properties. */
+const hasOwnProperty = Object.prototype.hasOwnProperty
+
+/**
+ * A specialized version of `baseIsEqual` for arrays and objects which performs
+ * deep comparisons and tracks traversed objects enabling objects with circular
+ * references to be compared.
+ *
+ * @private
+ * @param {Object} object The object to compare.
+ * @param {Object} other The other object to compare.
+ * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+ * @param {Function} customizer The function to customize comparisons.
+ * @param {Function} equalFunc The function to determine equivalents of values.
+ * @param {Object} [stack] Tracks traversed `object` and `other` objects.
+ * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
+ */
+function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
+  let objIsArr = Array.isArray(object)
+  const othIsArr = Array.isArray(other)
+  let objTag = objIsArr ? arrayTag : getTag(object)
+  let othTag = othIsArr ? arrayTag : getTag(other)
+
+  objTag = objTag === argsTag ? objectTag : objTag
+  othTag = othTag === argsTag ? objectTag : othTag
+
+  let objIsObj = objTag === objectTag
+  const othIsObj = othTag === objectTag
+  const isSameTag = objTag === othTag
+
+  if (isSameTag && isBuffer(object)) {
+    if (!isBuffer(other)) {
+      return false
+    }
+    objIsArr = true
+    objIsObj = false
+  }
+  if (isSameTag && !objIsObj) {
+    stack || (stack = new Stack)
+    return (objIsArr || isTypedArray(object))
+      ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
+      : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack)
+  }
+  if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
+    const objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__')
+    const othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__')
+
+    if (objIsWrapped || othIsWrapped) {
+      const objUnwrapped = objIsWrapped ? object.value() : object
+      const othUnwrapped = othIsWrapped ? other.value() : other
+
+      stack || (stack = new Stack)
+      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack)
+    }
+  }
+  if (!isSameTag) {
+    return false
+  }
+  stack || (stack = new Stack)
+  return equalObjects(object, other, bitmask, customizer, equalFunc, stack)
+}
+
+export default baseIsEqualDeep
--- a/src/.internal/baseIsMatch.ts
+++ b/src/.internal/baseIsMatch.ts
@@ -0,0 +1,64 @@
+import Stack from './Stack.js'
+import baseIsEqual from './baseIsEqual.js'
+
+/** Used to compose bitmasks for value comparisons. */
+const COMPARE_PARTIAL_FLAG = 1
+const COMPARE_UNORDERED_FLAG = 2
+
+/**
+ * The base implementation of `isMatch`.
+ *
+ * @private
+ * @param {Object} object The object to inspect.
+ * @param {Object} source The object of property values to match.
+ * @param {Array} matchData The property names, values, and compare flags to match.
+ * @param {Function} [customizer] The function to customize comparisons.
+ * @returns {boolean} Returns `true` if `object` is a match, else `false`.
+ */
+function baseIsMatch(object, source, matchData, customizer) {
+  let index = matchData.length
+  const length = index
+  const noCustomizer = !customizer
+
+  if (object == null) {
+    return !length
+  }
+  let data
+  let result
+  object = Object(object)
+  while (index--) {
+    data = matchData[index]
+    if ((noCustomizer && data[2])
+      ? data[1] !== object[data[0]]
+      : !(data[0] in object)
+    ) {
+      return false
+    }
+  }
+  while (++index < length) {
+    data = matchData[index]
+    const key = data[0]
+    const objValue = object[key]
+    const srcValue = data[1]
+
+    if (noCustomizer && data[2]) {
+      if (objValue === undefined && !(key in object)) {
+        return false
+      }
+    } else {
+      const stack = new Stack
+      if (customizer) {
+        result = customizer(objValue, srcValue, key, object, source, stack)
+      }
+      if (!(result === undefined
+        ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
+        : result
+      )) {
+        return false
+      }
+    }
+  }
+  return true
+}
+
+export default baseIsMatch
--- a/src/.internal/baseIsNaN.ts
+++ b/src/.internal/baseIsNaN.ts
@@ -0,0 +1,12 @@
+/**
+ * The base implementation of `isNaN` without support for number objects.
+ *
+ * @private
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
+ */
+function baseIsNaN(value) {
+  return value !== value
+}
+
+export default baseIsNaN
--- a/src/.internal/baseMatches.ts
+++ b/src/.internal/baseMatches.ts
@@ -0,0 +1,20 @@
+import baseIsMatch from './baseIsMatch.js'
+import getMatchData from './getMatchData.js'
+import matchesStrictComparable from './matchesStrictComparable.js'
+
+/**
+ * The base implementation of `matches` which doesn't clone `source`.
+ *
+ * @private
+ * @param {Object} source The object of property values to match.
+ * @returns {Function} Returns the new spec function.
+ */
+function baseMatches(source) {
+  const matchData = getMatchData(source)
+  if (matchData.length === 1 && matchData[0][2]) {
+    return matchesStrictComparable(matchData[0][0], matchData[0][1])
+  }
+  return (object) => object === source || baseIsMatch(object, source, matchData)
+}
+
+export default baseMatches
--- a/src/.internal/baseMatchesProperty.ts
+++ b/src/.internal/baseMatchesProperty.ts
@@ -0,0 +1,33 @@
+import baseIsEqual from './baseIsEqual.js'
+import get from '../get.js'
+import hasIn from '../hasIn.js'
+import isKey from './isKey.js'
+import isStrictComparable from './isStrictComparable.js'
+import matchesStrictComparable from './matchesStrictComparable.js'
+import toKey from './toKey.js'
+
+/** Used to compose bitmasks for value comparisons. */
+const COMPARE_PARTIAL_FLAG = 1
+const COMPARE_UNORDERED_FLAG = 2
+
+/**
+ * The base implementation of `matchesProperty` which doesn't clone `srcValue`.
+ *
+ * @private
+ * @param {string} path The path of the property to get.
+ * @param {*} srcValue The value to match.
+ * @returns {Function} Returns the new spec function.
+ */
+function baseMatchesProperty(path, srcValue) {
+  if (isKey(path) && isStrictComparable(srcValue)) {
+    return matchesStrictComparable(toKey(path), srcValue)
+  }
+  return (object) => {
+    const objValue = get(object, path)
+    return (objValue === undefined && objValue === srcValue)
+      ? hasIn(object, path)
+      : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG)
+  }
+}
+
+export default baseMatchesProperty
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				`https://github.com/lodash/lodash/wiki/Changelog`
				`@@ -1 +0,0 @@`
				`module.exports = require('../<%= name %>');`