old_contents: const defaultOptions = {
    prettierConfig: {
      printWidth: 120,
      tabWidth: 2,
      bracketSpacing: true,
      trailingComma: 'es5',
      singleQuote: true,
      parser: 'babylon',
    },
    uglyCommentsRegex: [/^eslint-.*/, /^global.*/],
  };
  
  export default defaultOptions;
  
new_contents: const defaultOptions = {
    prettierConfig: {
      printWidth: 120,
      tabWidth: 2,
      bracketSpacing: true,
      trailingComma: 'es5',
      singleQuote: true,
    },
    uglyCommentsRegex: [/^eslint-.*/, /^global.*/],
  };
  
  export default defaultOptions;
  
subject: Revert "storysource: Add default parser option. Support prettier v0.13.0 ( #3657 )"