37 lines
1.0 KiB
JavaScript
37 lines
1.0 KiB
JavaScript
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'use strict'
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function getObjectKeys (obj, excludeListItemAccessorsBelowLength) {
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const keys = []
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let size = 0
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// Sort property names, they should never be order-sensitive
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const nameCandidates = Object.getOwnPropertyNames(obj).sort()
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// Comparators should verify symbols in an order-insensitive manner if
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// possible.
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const symbolCandidates = Object.getOwnPropertySymbols(obj)
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for (let i = 0; i < nameCandidates.length; i++) {
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const name = nameCandidates[i]
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let accept = true
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if (excludeListItemAccessorsBelowLength > 0) {
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const index = Number(name)
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accept = (index % 1 !== 0) || index >= excludeListItemAccessorsBelowLength
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}
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if (accept && Object.getOwnPropertyDescriptor(obj, name).enumerable) {
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keys[size++] = name
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}
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}
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for (let i = 0; i < symbolCandidates.length; i++) {
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const symbol = symbolCandidates[i]
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if (Object.getOwnPropertyDescriptor(obj, symbol).enumerable) {
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keys[size++] = symbol
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}
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}
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return { keys, size }
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}
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module.exports = getObjectKeys
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