e-lado/node_modules0/fbjs/lib/partitionObject.js.flow

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/**
 * Copyright 2015-present Facebook. All Rights Reserved.
 *
 * @providesModule partitionObject
 * @typechecks
 * @flow
 */

'use strict';

var forEachObject = require('./forEachObject');

/**
 * Partitions an object given a predicate. All elements satisfying the predicate
 * are part of the first returned object, and all elements that don't are in the
 * second.
 */
function partitionObject<Tv>(object: { [key: string]: Tv }, callback: (value: Tv, key: string, object: { [key: string]: Tv }) => boolean, context?: any): [{ [key: string]: Tv }, { [key: string]: Tv }] {
  var first = {};
  var second = {};
  forEachObject(object, (value, key) => {
    if (callback.call(context, value, key, object)) {
      first[key] = value;
    } else {
      second[key] = value;
    }
  });
  return [first, second];
}

module.exports = partitionObject;