lint-staged.config.js

module.exports = {
  // this will check Typescript files
  '**/*.(ts|tsx)': () => 'tsc --noEmit',

  // This will lint and format TypeScript and                                             //JavaScript files
  '**/*.(ts|tsx|js)': (filenames) => [`eslint --fix ${filenames.join(' ')}`, `prettier --write ${filenames.join(' ')}`],

  // this will Format MarkDown and JSON
  '**/*.(md|json)': (filenames) => `prettier --write ${filenames.join(' ')}`,
};