31 lines
849 B
Plaintext
31 lines
849 B
Plaintext
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/**
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* Copyright 2015-present Facebook. All Rights Reserved.
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*
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* @providesModule partitionObject
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* @typechecks
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* @flow
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*/
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'use strict';
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var forEachObject = require('./forEachObject');
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/**
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* Partitions an object given a predicate. All elements satisfying the predicate
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* are part of the first returned object, and all elements that don't are in the
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* second.
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*/
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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 }] {
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var first = {};
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var second = {};
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forEachObject(object, (value, key) => {
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if (callback.call(context, value, key, object)) {
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first[key] = value;
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} else {
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second[key] = value;
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}
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});
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return [first, second];
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}
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module.exports = partitionObject;
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