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Getting Started

Quickstart​

This page is a quick-start for ESLint's new "flat" config format to go from zero to linting with our recommended rules on your TypeScript code as quickly as possible.

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Step 1: Installation​

First, install the required packages for ESLint, TypeScript, and our tooling:

npm install --save-dev eslint @eslint/js typescript typescript-eslint

Step 2: Configuration​

Next, create an eslint.config.js config file in the root of your project, and populate it with the following:

eslint.config.js
// @ts-check

import eslint from '@eslint/js';
import tseslint from 'typescript-eslint';

export default tseslint.config(
  eslint.configs.recommended,
  ...tseslint.configs.recommended,
);

This code will enable our recommended configuration for linting.

Step 3: Running ESLint​

Open a terminal to the root of your project and run the following command:

npx eslint .

ESLint will lint all TypeScript compatible files within the current folder, and will output the results to your terminal.

Details​

Next Steps​

If you're having problems getting this working, please have a look at our Troubleshooting & FAQs.

Additional Configs​

We recommend you consider enabling the following two configs:

  • strict: a superset of recommended that includes more opinionated rules which may also catch bugs.
  • stylistic: additional rules that enforce consistent styling without significantly catching bugs or changing logic.
eslint.config.js
export default tseslint.config(
  eslint.configs.recommended,
  ...tseslint.configs.recommended,
  ...tseslint.configs.strict,
  ...tseslint.configs.stylistic,
);

You can read more about these in our shared configurations docs.

Typed Linting​

We also provide a plethora of powerful rules that utilize the power of TypeScript's type information. Visit the next page for a typed rules setup guide.

Documentation Resources​