41 lines
761 B
JavaScript
41 lines
761 B
JavaScript
import update from './update';
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import wrap from './wrap';
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function forEach(object, callback) {
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if (Array.isArray(object)) {
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object.forEach(callback);
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} else {
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Object.keys(object).forEach((key) => callback(object[key], key));
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}
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}
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function clone(object) {
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if (Array.isArray(object)) {
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return [...object];
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}
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return { ...object };
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}
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function map(iteratee, object) {
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const updater = typeof iteratee === 'function' ?
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iteratee :
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update(iteratee);
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let newObject;
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forEach(object, (value, index) => {
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const newValue = updater(value, index);
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if (newValue === value) return;
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newObject = newObject || clone(object);
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newObject[index] = newValue;
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});
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return newObject || object;
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}
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export default wrap(map);
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