iter-tools-es/impls/object-keys/object-keys.js

The iterable toolbox

const {
  wrapWithIterableIterator
} = require('../../internal/iterable.js');

const {
  hasOwnProperty
} = Object.prototype;

function* __objectKeys(obj) {
  if (obj == null) {
    return;
  }

  for (const key in obj) {
    if (hasOwnProperty.call(obj, key)) {
      yield key;
    }
  }
}

exports.__objectKeys = __objectKeys;
const objectKeys = /*#__PURE__*/wrapWithIterableIterator(__objectKeys, {
  validateArgs(args) {
    if (!(args[0] == null || typeof args[0] === 'object')) {
      throw new Error('obj argument to objectKeys must be an object, null, or undefined');
    }
  }

});
exports.objectKeys = objectKeys;