ESLint

1. Getting Started

   Installing ESLint and running first lint.

2. Core Concepts

   Rules, parsers, plugins, configs and formatters.

3. Configuration Files

   Flat config, file patterns and extends.

4. Configure Rules

   Severity levels, rule options and inline comments.

5. Language Options

   ecmaVersion, sourceType and globals.

6. Parsers

   Custom parsers such as TypeScript.

7. Plugins

   Using shared rules, processors and configs.

8. Ignore Files

   Ignoring files and directories.

9. Command Line Interface

   CLI flags, --fix and exit codes.

10. Formatters

    Output formats for results.

11. Custom Rules

    Writing rules with AST visitors, context and fixers.

12. Create Plugins

    Packaging rules, processors and configs.

13. Node.js API

    ESLint class and Linter class.

14. Migrate to Flat Config

    Moving from eslintrc to eslint.config.js.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.

Source: endoflife.date