This project is an ESLint plugin that enforces functional programming principles in JavaScript and TypeScript by disabling mutation and promoting immutability. It's designed for developers who want to adopt a functional programming style or enforce functional coding standards in their projects, offering multiple configuration presets ranging from strict to lite to accommodate different levels of functional programming adoption.

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Support the dependencies of eslint-functional/eslint-plugin-functional

typescript-eslint/typescript-eslint

Utilities for working with TypeScript + ESLint together

RebeccaStevens/deepmerge-ts

Deeply merge 2 or more objects respecting type information.

RebeccaStevens/is-immutable-type

Check the immutability of TypeScript types

JoshuaKGoldberg/ts-api-utils

Utility functions for working with TypeScript's API. Successor to the wonderful tsutils. 🛠️️

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eslint/rewrite

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RebeccaStevens/eslint-config-rebeccastevens

My ESLint shareable config.

eslint-stylistic/eslint-stylistic

DefinitelyTyped/DefinitelyTyped

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vitest-dev/vitest

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antfu/eslint-flat-config-utils

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import-js/eslint-import-resolver-typescript

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antfu/eslint-merge-processors

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mysticatea/eslint-plugin-eslint-comments

Additional ESLint rules for ESLint directive comments.

eslint-community/eslint-plugin-eslint-plugin

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gajus/eslint-plugin-jsdoc

JSDoc linting rules for ESLint.

ota-meshi/eslint-plugin-jsonc

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eslint-community/eslint-plugin-n

Additional ESLint's rules for Node.js

levibuzolic/eslint-plugin-no-only-tests

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BrainMaestro/eslint-plugin-optimize-regex

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prettier/eslint-plugin-prettier

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ota-meshi/eslint-plugin-regexp

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SonarSource/SonarJS

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antfu-collective/eslint-vitest-rule-tester

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ota-meshi/jsonc-eslint-parser

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lint-staged/lint-staged

Lint files staged by git

DavidAnson/markdownlint-cli2

A fast, flexible, configuration-based command-line interface for linting Markdown/CommonMark files with the `markdownlint` library

Support the dependencies

Support the repos that depend on this repository

Top contributors

RebeccaStevens

769 contributions

renovate[bot]

540 contributions

dependabot[bot]

130 contributions

64 contributions

30 contributions

4 contributions

4 contributions

2 contributions

2 contributions

1 contributions

Recent events

Kivach works on the Obyte network, and therefore you can track all donations.

No events yet

RebeccaStevens

769 contributions

renovate[bot]

540 contributions

dependabot[bot]

130 contributions

64 contributions

30 contributions

4 contributions

4 contributions

2 contributions

2 contributions

1 contributions

eslint-functional/eslint-plugin-fun...

ESLint rules to disable mutation and promote fp in JavaScript and TypeScript.

TypeScript

971

MIT License

Support the dependencies of eslint-functional/eslint-plugin-functional

typescript-eslint/typescript-eslint

Utilities for working with TypeScript + ESLint together

RebeccaStevens/deepmerge-ts

Deeply merge 2 or more objects respecting type information.

RebeccaStevens/is-immutable-type

Check the immutability of TypeScript types

JoshuaKGoldberg/ts-api-utils

Utility functions for working with TypeScript's API. Successor to the wonderful tsutils. 🛠️️

RebeccaStevens/ts-declaration-location

Determine where a ts type declaration comes from

babel/babel

ESLint parser that allows for linting of experimental syntax transformed by Babel

streetsidesoftware/cspell-dicts

Cryptocurrencies dictionary for cspell.

eslint/rewrite

Compatibility utilities for ESLint

RebeccaStevens/eslint-config-rebeccastevens

My ESLint shareable config.

eslint-stylistic/eslint-stylistic

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for node

typescript-eslint/typescript-eslint

TypeScript plugin for ESLint

typescript-eslint/typescript-eslint

An ESLint custom parser which leverages TypeScript ESTree

vitest-dev/vitest

V8 coverage provider for Vitest

streetsidesoftware/cspell

A Spelling Checker for Code!

dmnd/dedent

A string tag that strips indentation from multi-line strings. ⬅️

eslint-community/eslint-doc-generator

Automatic documentation generator for ESLint plugins and rules.

antfu/eslint-flat-config-utils

Utils for managing and manipulating ESLint flat config arrays

import-js/eslint-import-resolver-typescript

This plugin adds `TypeScript` support to `eslint-plugin-import`

antfu/eslint-merge-processors

Merge multiple ESLint processors to behave like one

mysticatea/eslint-plugin-eslint-comments

Additional ESLint rules for ESLint directive comments.

eslint-community/eslint-plugin-eslint-plugin

An ESLint plugin for linting ESLint plugins

antfu/eslint-plugin-format

Format various languages with formatters in ESLint

un-ts/eslint-plugin-import-x

Import with sanity.

gajus/eslint-plugin-jsdoc

JSDoc linting rules for ESLint.

ota-meshi/eslint-plugin-jsonc

ESLint plugin for JSON, JSONC and JSON5 files.

eslint-community/eslint-plugin-n

Additional ESLint's rules for Node.js

levibuzolic/eslint-plugin-no-only-tests

ESLint rule for .only blocks in mocha tests

BrainMaestro/eslint-plugin-optimize-regex

Optimize regex literals

prettier/eslint-plugin-prettier

Runs prettier as an eslint rule

eslint-community/eslint-plugin-promise

Enforce best practices for JavaScript promises

ota-meshi/eslint-plugin-regexp

ESLint plugin for finding RegExp mistakes and RegExp style guide violations.

SonarSource/SonarJS

SonarJS rules for ESLint

ota-meshi/eslint-plugin-yml

This ESLint plugin provides linting rules for YAML.

antfu-collective/eslint-vitest-rule-tester

ESLint rule tester with Vitest

typicode/husky

Modern native Git hooks

ota-meshi/jsonc-eslint-parser

JSON, JSONC and JSON5 parser for use with ESLint plugins

webpro-nl/knip

Find and fix unused dependencies, exports and files in your TypeScript and JavaScript projects

lint-staged/lint-staged

Lint files staged by git

DavidAnson/markdownlint-cli2

A fast, flexible, configuration-based command-line interface for linting Markdown/CommonMark files with the `markdownlint` library