41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
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const isBuffer = require('../../predicate/isBuffer.js');
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const isPrototype = require('../_internal/isPrototype.js');
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const isArrayLike = require('../predicate/isArrayLike.js');
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const isTypedArray = require('../predicate/isTypedArray.js');
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const times = require('../util/times.js');
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function keys(object) {
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if (isArrayLike.isArrayLike(object)) {
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return arrayLikeKeys(object);
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}
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const result = Object.keys(Object(object));
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if (!isPrototype.isPrototype(object)) {
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return result;
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}
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return result.filter(key => key !== 'constructor');
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}
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function arrayLikeKeys(object) {
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const indices = times.times(object.length, index => `${index}`);
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const filteredKeys = new Set(indices);
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if (isBuffer.isBuffer(object)) {
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filteredKeys.add('offset');
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filteredKeys.add('parent');
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}
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if (isTypedArray.isTypedArray(object)) {
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filteredKeys.add('buffer');
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filteredKeys.add('byteLength');
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filteredKeys.add('byteOffset');
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}
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const inheritedKeys = Object.keys(object).filter(key => !filteredKeys.has(key));
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if (Array.isArray(object)) {
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return [...indices, ...inheritedKeys];
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}
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return [...indices.filter(index => Object.hasOwn(object, index)), ...inheritedKeys];
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}
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exports.keys = keys;
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