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codeql-action/node_modules/es-abstract/helpers/assertRecord.js
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'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var $SyntaxError = GetIntrinsic('%SyntaxError%'); | |
var has = require('has'); | |
var isInteger = require('./isInteger'); | |
var isMatchRecord = require('./isMatchRecord'); | |
var predicates = { | |
// https://262.ecma-international.org/6.0/#sec-property-descriptor-specification-type | |
'Property Descriptor': function isPropertyDescriptor(Desc) { | |
var allowed = { | |
'[[Configurable]]': true, | |
'[[Enumerable]]': true, | |
'[[Get]]': true, | |
'[[Set]]': true, | |
'[[Value]]': true, | |
'[[Writable]]': true | |
}; | |
if (!Desc) { | |
return false; | |
} | |
for (var key in Desc) { // eslint-disable-line | |
if (has(Desc, key) && !allowed[key]) { | |
return false; | |
} | |
} | |
var isData = has(Desc, '[[Value]]'); | |
var IsAccessor = has(Desc, '[[Get]]') || has(Desc, '[[Set]]'); | |
if (isData && IsAccessor) { | |
throw new $TypeError('Property Descriptors may not be both accessor and data descriptors'); | |
} | |
return true; | |
}, | |
// https://262.ecma-international.org/13.0/#sec-match-records | |
'Match Record': isMatchRecord, | |
'Iterator Record': function isIteratorRecord(value) { | |
return has(value, '[[Iterator]]') && has(value, '[[NextMethod]]') && has(value, '[[Done]]'); | |
}, | |
'PromiseCapability Record': function isPromiseCapabilityRecord(value) { | |
return !!value | |
&& has(value, '[[Resolve]]') | |
&& typeof value['[[Resolve]]'] === 'function' | |
&& has(value, '[[Reject]]') | |
&& typeof value['[[Reject]]'] === 'function' | |
&& has(value, '[[Promise]]') | |
&& value['[[Promise]]'] | |
&& typeof value['[[Promise]]'].then === 'function'; | |
}, | |
'AsyncGeneratorRequest Record': function isAsyncGeneratorRequestRecord(value) { | |
return !!value | |
&& has(value, '[[Completion]]') // TODO: confirm is a completion record | |
&& has(value, '[[Capability]]') | |
&& predicates['PromiseCapability Record'](value['[[Capability]]']); | |
}, | |
'RegExp Record': function isRegExpRecord(value) { | |
return value | |
&& has(value, '[[IgnoreCase]]') | |
&& typeof value['[[IgnoreCase]]'] === 'boolean' | |
&& has(value, '[[Multiline]]') | |
&& typeof value['[[Multiline]]'] === 'boolean' | |
&& has(value, '[[DotAll]]') | |
&& typeof value['[[DotAll]]'] === 'boolean' | |
&& has(value, '[[Unicode]]') | |
&& typeof value['[[Unicode]]'] === 'boolean' | |
&& has(value, '[[CapturingGroupsCount]]') | |
&& typeof value['[[CapturingGroupsCount]]'] === 'number' | |
&& isInteger(value['[[CapturingGroupsCount]]']) | |
&& value['[[CapturingGroupsCount]]'] >= 0; | |
} | |
}; | |
module.exports = function assertRecord(Type, recordType, argumentName, value) { | |
var predicate = predicates[recordType]; | |
if (typeof predicate !== 'function') { | |
throw new $SyntaxError('unknown record type: ' + recordType); | |
} | |
if (Type(value) !== 'Object' || !predicate(value)) { | |
throw new $TypeError(argumentName + ' must be a ' + recordType); | |
} | |
}; |