Is the config file
.eslintrcdeprecated in favor of.eslintrc.*files?
Yes, but it's still supported.
What format should we use instead?
.eslintrc.json is the most similar to what you're used to, it's the same format but with an explicit JSON extension. If you'd like to avoid extra files, you can alternatively add your config to the eslintConfig field of package.json. If you need dynamic code, use .eslintrc.js or .eslintrc.cjs.
Configuration Guide
Answer from Nicky McCurdy on Stack Overflownpm
npmjs.com › package › @eslint › eslintrc
eslint/eslintrc
This repository contains the legacy ESLintRC configuration file format for ESLint. This package is not intended for use outside of the ESLint ecosystem.
» npm install @eslint/eslintrc
Published Mar 06, 2026
Version 3.3.5
Author Nicholas C. Zakas
Repository https://github.com/eslint/eslintrc
ESLint
eslint.org › docs › latest › use › configure › migration-guide
Configuration Migration Guide - ESLint - Pluggable JavaScript Linter
If you are using .eslintrc.js, the migration results in a config file that matches the evaluated output of your configuration and won’t include any functions, conditionals, or anything other than the raw data represented in your configuration. The flat config file format has been the default configuration file format since ESLint ...
Videos
04:26
Intro to ESLint and Init eslintrc File - YouTube
10:56
Customizing Eslint with eslintrc - YouTube
08:16
VSCode and ESLint Setup - YouTube
19:15
How to Use ESLint in VSCode for JavaScript Projects | Set Up ESLint ...
11:32
3. Everything You Wanted to Know About ESLint configuration file ...
16:26
Configuring ESLint to Minimize Bugs & Promote Type-Safety incl. ...
GitHub
github.com › eslint › eslintrc › releases
Releases · eslint/eslintrc
The legacy ESLintRC config file format for ESLint. Contribute to eslint/eslintrc development by creating an account on GitHub.
Author eslint
GitHub
github.com › eslint › eslintrc
GitHub - eslint/eslintrc: The legacy ESLintRC config file format for ESLint · GitHub
This repository contains the legacy ESLintRC configuration file format for ESLint. This package is not intended for use outside of the ESLint ecosystem.
Author eslint
Duncanleung
duncanleung.com › how to setup eslint .eslintrc config
How to Setup ESLint .eslintrc Config – Duncan Leung
Many recommended base configurations shared from eslint-config-* already set the parser, plugins, and env properties. There is no need to re-declare these properties in your own .eslintrc if you're extending off a recommended base configuration that already has these declared.
ESLint
eslint.org › docs › latest › use › configure
Configure ESLint - ESLint - Pluggable JavaScript Linter
A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.
ESLint
eslint.org › docs › latest › use › configure › configuration-files
Configuration Files - ESLint - Pluggable JavaScript Linter
A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.
GitHub
github.com › eslint › eslint › discussions › 18543
Convert .eslintrc.json to eslint.config.js · eslint/eslint · Discussion #18543
Just updated from 8 to 9 and fail on the config file. Why not just auto-convert it? Is there a converter? I know the https://eslint.org/docs/latest/use/configure/migration-guide but auto convert would be better. I wish to lint --fix .eslintrc.json to eslint.config.js ·
Author eslint
ESLint
eslint.org › blog › 2026 › 02 › eslint-v10.0.0-released
ESLint v10.0.0 released - ESLint - Pluggable JavaScript Linter
In ESLint v9.x, this config lookup behavior could be enabled with the v10_config_lookup_from_file feature flag. In ESLint v10.0.0, this behavior is now the default and the v10_config_lookup_from_file flag has been removed. As announced in Flat config rollout plans, the eslintrc config system has been completely removed in ESLint v10.0.0.
ESLint
eslint.org › docs › latest › use › migrate-to-10.0.0
Migrate to v10.x - ESLint - Pluggable JavaScript Linter
To address: Upgrade @eslint/eslintrc to the latest version if you are using FlatCompat.
Yarn
classic.yarnpkg.com › en › package › @eslint › eslintrc
@eslint/eslintrc | Yarn
Fast, reliable, and secure dependency management.
Medium
medium.com › @ritz.sh › understanding-eslint-configuration-eslintrc-js-vs-eslintrc-vs-eslintrc-json-287ec5e95bf4
Understanding ESLint Configuration: .eslintrc.js vs .eslintrc vs .eslintrc.json | by Rizul sharma | Medium
March 7, 2024 - Community Standards: While .eslintrc.js is favored for intricate setups, .eslintrc and .eslintrc.json is preferred for simpler configurations, aligning with community standards. The choice of ESLint configuration format hinges on project complexity and team preferences.
ESLint
eslint.org › blog › 2024 › 05 › eslint-configuration-migrator
Introducing the ESLint Configuration Migrator - ESLint - Pluggable JavaScript Linter
You can use the configuration migrator directly from npm without installing it via npx or similar commands. Pass the location of the .eslintrc.* file to convert, like this: npx @eslint/migrate-config .eslintrc.json # or yarn dlx @eslint/migrate-config .eslintrc.json # or pnpm dlx @eslint/migrate-config .eslintrc.json # or bunx @eslint/migrate-config .eslintrc.json
npm
npmjs.com › package › @eslint › eslintrc › v › 2.1.0
@eslint/eslintrc - npm
The legacy ESLintRC config file format for ESLint. Latest version: 3.3.4, last published: 10 days ago. Start using @eslint/eslintrc in your project by running `npm i @eslint/eslintrc`. There are 576 other projects in the npm registry using @eslint/eslintrc.
» npm install @eslint/eslintrc
Published Feb 23, 2026
Version 2.1.0
Author Nicholas C. Zakas
Repository https://github.com/eslint/eslintrc
GitHub
github.com › eslint › eslint › issues › 14137
ESLint fails with ESM and JS eslintrc · Issue #14137 · eslint/eslint
February 24, 2021 - ESLint fails in a very minimal installation when ESM are used and the .eslintrc format is JS. The eslint CLI tries to load the .eslintrc.js with require, which fails if you've set "type": "module" in your package.json. Steps to reproduce...
Published Feb 24, 2021
Reddit
reddit.com › r/learnjavascript › eslint doesn't include a .eslintrc file
r/learnjavascript on Reddit: eslint doesn't include a .eslintrc file
April 28, 2024 -
I want to use eslint (v 9.1.1) for a react project. From following the documentation, I did the following:
npm init eslint/config
Following that it says the following: https://eslint.org/docs/v8.x/use/getting-started#configuration
After running
npm init eslint/config, you’ll have an .eslintrc.{js,yml,json} file in your directory.
Yet that file doesn't exist in my directory. Any idea why this file wasn't included?
Top answer 1 of 2
2
You should notice that you're using 9.x but reading the docs for 8.x Here's the 9.x link.. spot the difference? https://eslint.org/docs/latest/use/getting-started#configuration
2 of 2
1
You're using eslint 9.x and looking at docs for 8.x. here's the same documentation page for 9/latest . It now uses eslint.config.js. Caused me quite a pain getting a whole bunch of PRs with such breaking changes across a bunch of projects.
ESLint
archive.eslint.org › docs › 7.0.0 › user-guide › configuring
Configuring ESLint
There are two primary ways to configure ESLint: Configuration Comments - use JavaScript comments to embed configuration information directly into a file. Configuration Files - use a JavaScript, JSON or YAML file to specify configuration information for an entire directory and all of its subdirectories. This can be in the form of an .eslintrc...
ESLint
eslint.org › blog › 2022 › 08 › new-config-system-part-2
ESLint's new config system, Part 2: Introduction to flat config - ESLint - Pluggable JavaScript Linter
ESLint searches for .js, .mjs, and .cjs files - With eslintrc, ESLint only ever searched for .js files when you passed a directory name on the command line, and you would need to use the --ext flag to define more.