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49 lines
1.4 KiB
49 lines
1.4 KiB
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $TypeError = GetIntrinsic('%TypeError%'); |
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var $SyntaxError = GetIntrinsic('%SyntaxError%'); |
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var has = require('has'); |
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var isMatchRecord = require('./isMatchRecord'); |
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var predicates = { |
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// https://262.ecma-international.org/6.0/#sec-property-descriptor-specification-type |
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'Property Descriptor': function isPropertyDescriptor(Desc) { |
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var allowed = { |
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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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for (var key in Desc) { // eslint-disable-line |
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if (has(Desc, key) && !allowed[key]) { |
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return false; |
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} |
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} |
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var isData = has(Desc, '[[Value]]'); |
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var IsAccessor = has(Desc, '[[Get]]') || has(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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// https://262.ecma-international.org/13.0/#sec-match-records |
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'Match Record': isMatchRecord |
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}; |
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module.exports = function assertRecord(Type, recordType, argumentName, value) { |
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var predicate = predicates[recordType]; |
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if (typeof predicate !== 'function') { |
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throw new $SyntaxError('unknown record type: ' + recordType); |
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} |
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if (Type(value) !== 'Object' || !predicate(value)) { |
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throw new $TypeError(argumentName + ' must be a ' + recordType); |
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} |
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};
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