46 lines
969 B
JavaScript
46 lines
969 B
JavaScript
'use strict';
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var _require = require('../helpers/is'),
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isArray = _require.isArray,
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isObject = _require.isObject,
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isFunction = _require.isFunction;
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module.exports = function takeWhile(valueOrFunction) {
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var _this = this;
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var previous = null;
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var items = void 0;
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var callback = function callback(value) {
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return value === valueOrFunction;
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};
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if (isFunction(valueOrFunction)) {
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callback = valueOrFunction;
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}
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if (isArray(this.items)) {
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items = this.items.filter(function (item) {
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if (previous !== false) {
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previous = callback(item);
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}
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return previous;
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});
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}
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if (isObject(this.items)) {
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items = Object.keys(this.items).reduce(function (acc, key) {
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if (previous !== false) {
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previous = callback(_this.items[key]);
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}
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if (previous !== false) {
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acc[key] = _this.items[key];
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}
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return acc;
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}, {});
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}
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return new this.constructor(items);
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}; |