32 lines
669 B
JavaScript
32 lines
669 B
JavaScript
/*!
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* object.reduce <https://github.com/jonschlinkert/object.reduce>
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*
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* Copyright (c) 2014-2015, 2017, Jon Schlinkert.
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* Released under the MIT License.
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*/
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'use strict';
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var makeIterator = require('make-iterator');
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var forOwn = require('for-own');
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module.exports = function reduce(target, fn, acc, thisArg) {
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var first = arguments.length > 2;
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if (target && !Object.keys(target).length && !first) {
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return null;
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}
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var iterator = makeIterator(fn, thisArg);
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forOwn(target, function(value, key, orig) {
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if (!first) {
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acc = value;
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first = true;
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} else {
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acc = iterator(acc, value, key, orig);
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}
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});
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return acc;
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};
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