49 lines
1.2 KiB
JavaScript
49 lines
1.2 KiB
JavaScript
'use strict';
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function map() {
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var args = Array.from(arguments);
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var list = args[0];
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var callback = args[1];
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if (list && Object.prototype.hasOwnProperty.call(list, 'toArray')) {
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list = list.toArray();
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}
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return list ? list.map(callback) : [];
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}
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function find() {
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var args = Array.from(arguments);
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var list = args[0];
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var callback = args[1];
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if (list && Object.prototype.hasOwnProperty.call(list, 'toArray')) {
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list = list.toArray();
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}
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return list ? list.find(callback) : null;
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}
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function forEach() {
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var args = Array.from(arguments);
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var list = args[0];
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var callback = args[1];
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if (list && Object.prototype.hasOwnProperty.call(list, 'toArray')) {
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list = list.toArray();
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}
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return list ? list.forEach(callback) : null;
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}
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function every() {
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var args = Array.from(arguments);
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var list = args[0];
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var callback = args[1];
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if (list && Object.prototype.hasOwnProperty.call(list, 'toArray')) {
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list = list.toArray();
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}
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return list ? list.every(callback) : null;
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}
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module.exports = {
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find: find,
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forEach: forEach,
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map: map,
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every: every
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};
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