37 lines
868 B
Plaintext
37 lines
868 B
Plaintext
'use strict';
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var $TypeError = require('es-errors/type');
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var hasOwn = require('hasown');
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var allowed = {
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__proto__: null,
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'[[Configurable]]': true,
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'[[Enumerable]]': true,
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'[[Get]]': true,
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'[[Set]]': true,
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'[[Value]]': true,
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'[[Writable]]': true
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};
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// https://262.ecma-international.org/6.0/#sec-property-descriptor-specification-type
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module.exports = function isPropertyDescriptor(Desc) {
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if (!Desc || typeof Desc !== 'object') {
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return false;
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}
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for (var key in Desc) { // eslint-disable-line
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if (hasOwn(Desc, key) && !allowed[key]) {
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return false;
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}
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}
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var isData = hasOwn(Desc, '[[Value]]') || hasOwn(Desc, '[[Writable]]');
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var IsAccessor = hasOwn(Desc, '[[Get]]') || hasOwn(Desc, '[[Set]]');
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if (isData && IsAccessor) {
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throw new $TypeError('Property Descriptors may not be both accessor and data descriptors');
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}
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return true;
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};
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