Migrate lint-staged configuration to TypeScript

[mfranzke]

Lint-staged now provides TypeScript types for the configuration and main Node.js API. You can use the JSDoc syntax in your JS configuration files:

/**
 * @filename: lint-staged.config.js
 * @type {import('lint-staged').Configuration}
 */
export default {
  '*': 'prettier --write',
}

It's also possible to use the .ts file extension for the configuration if your Node.js version supports it. The --experimental-strip-types flag was introduced in Node.js v22.6.0 and unflagged in v23.6.0, enabling Node.js to execute TypeScript files without additional configuration.

export NODE_OPTIONS="--experimental-strip-types"
npx lint-staged --config lint-staged.config.ts