@vercel/style-guide/prettier/index.js

Vercel's engineering style guide

/**
 * Some of Prettier's defaults can be overridden by an EditorConfig file. We
 * define those here to ensure that doesn't happen.
 *
 * See: https://github.com/prettier/prettier/blob/main/docs/configuration.md#editorconfig
 */
const overridableDefaults = {
  endOfLine: 'lf',
  tabWidth: 2,
  printWidth: 80,
  useTabs: false,
};

module.exports = {
  ...overridableDefaults,
  singleQuote: true,
  plugins: ['prettier-plugin-packagejson'],
};