code: function errorHandler (error, file) {
  	let filePath = (error.file === 'stdin' ? file.path : error.file) || file.path;
  	let relativePath = path.relative(process.cwd(), filePath);
  
  	let msg = [
  		colors.underline(relativePath),
  		'',
  		error.formatted
  	].join('\n');
  
  	return new PluginError(pkg.name, msg);
  }
docs: ---------------------------------------- Public ---------------------------------------- 
  @param {Error} error
  @param {string} error.file
  @param {Buffer} file
  @param {string} file.path
  @returns {Error}
  @sourceCode