How to use

has

function

in

Map

if (_.has(kFlattenedConfig, config)) {
 debug('Config already processed');
 if (_.has(kFlattenedConfig, value)) {
  debug('Config already processed');
  return configObjects.push(value);
 if (_.isString(value) && BUILTIN_CONFIGS.has(value)) {
  const builtin = BUILTIN_CONFIGS.get(value);
  if (_.isArray(builtin) || _.isString(builtin)) {
  );
 } else if (!Array.isArray(value) && _.isObject(value)) {
  if (_.has('config', value)) {
   configObjects.push(
    flattenConfig(
    _.keys,
    _.forEach(k => {
     if (!_.has(k, DEFAULT_CONFIG_SHAPE)) {
      throw RTkError.create(
       RTKERR_INVALID_CONFIG,