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16 lines
565 B
JavaScript
16 lines
565 B
JavaScript
import isObject from './isObject.js';
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import { nativeKeys, hasEnumBug } from './_setup.js';
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import has from './_has.js';
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import collectNonEnumProps from './_collectNonEnumProps.js';
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// Retrieve the names of an object's own properties.
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// Delegates to **ECMAScript 5**'s native `Object.keys`.
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export default function keys(obj) {
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if (!isObject(obj)) return [];
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if (nativeKeys) return nativeKeys(obj);
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var keys = [];
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for (var key in obj) if (has(obj, key)) keys.push(key);
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// Ahem, IE < 9.
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if (hasEnumBug) collectNonEnumProps(obj, keys);
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return keys;
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}
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