58 lines
1.7 KiB
JavaScript
58 lines
1.7 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 keysIn(object) {
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if (object == null) {
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return [];
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}
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switch (typeof object) {
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case 'object':
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case 'function': {
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if (isArrayLike.isArrayLike(object)) {
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return arrayLikeKeysIn(object);
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}
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if (isPrototype.isPrototype(object)) {
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return prototypeKeysIn(object);
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}
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return keysInImpl(object);
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}
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default: {
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return keysInImpl(Object(object));
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}
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}
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}
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function keysInImpl(object) {
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const result = [];
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for (const key in object) {
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result.push(key);
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}
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return result;
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}
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function prototypeKeysIn(object) {
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const keys = keysInImpl(object);
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return keys.filter(key => key !== 'constructor');
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}
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function arrayLikeKeysIn(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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return [...indices, ...keysInImpl(object).filter(key => !filteredKeys.has(key))];
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}
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exports.keysIn = keysIn;
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