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lint-staged

Lint files staged by git


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What is lint-staged?

The lint-staged npm package is used to run linters on staged git files. It allows you to run specific commands before committing, ensuring that only clean, linted code gets committed to your repository. This helps in maintaining code quality and reducing the chances of committing code with errors or that doesn't adhere to the project's coding standards.

What are lint-staged's main functionalities?

Running linters on staged files

This configuration in package.json will run ESLint on staged JavaScript files and Stylelint on staged CSS files, automatically fixing any fixable issues.

"lint-staged": {
  "*.js": "eslint --fix",
  "*.css": "stylelint --fix"
}

Running custom scripts

This configuration will run markdownlint-cli2 on staged Markdown files to ensure they meet the project's markdown style requirements.

"lint-staged": {
  "*.md": "npx markdownlint-cli2"
}

Using with pre-commit hooks

This configuration sets up Husky to run lint-staged as a pre-commit hook, ensuring that the linters are run automatically before each commit.

{
  "husky": {
    "hooks": {
      "pre-commit": "lint-staged"
    }
  }
}

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Package last updated on 01 Sep 2024

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