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codeql-action/node_modules/object.groupby/aos/IteratorClose.js
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'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var Call = require('es-abstract/2022/Call'); | |
var CompletionRecord = require('es-abstract/2022/CompletionRecord'); | |
var GetMethod = require('es-abstract/2022/GetMethod'); | |
var Type = require('es-abstract/2022/Type'); | |
var assertRecord = require('es-abstract/helpers/assertRecord'); | |
// https://262.ecma-international.org/14.0/#sec-iteratorclose | |
module.exports = function IteratorClose(iteratorRecord, completion) { | |
assertRecord(Type, 'Iterator Record', 'iteratorRecord', iteratorRecord); | |
if (Type(iteratorRecord['[[Iterator]]']) !== 'Object') { | |
throw new $TypeError('Assertion failed: iteratorRecord.[[Iterator]] must be an Object'); // step 1 | |
} | |
if (!(completion instanceof CompletionRecord)) { // step 2 | |
throw new $TypeError('Assertion failed: completion is not a Completion Record instance'); | |
} | |
var completionThunk = function () { | |
var value = completion.value(); | |
if (completion.type() === 'throw') { | |
throw value; | |
} | |
return value; | |
}; | |
var iterator = iteratorRecord['[[Iterator]]']; // step 3 | |
var iteratorReturn; | |
try { | |
iteratorReturn = GetMethod(iterator, 'return'); // step 4 | |
} catch (e) { | |
completionThunk(); // throws if `completion` is a throw completion // step 6 | |
completionThunk = null; // ensure it's not called twice. | |
throw e; // step 7 | |
} | |
if (typeof iteratorReturn === 'undefined') { | |
return completionThunk(); // step 5.a - 5.b | |
} | |
var innerResult; | |
try { | |
innerResult = Call(iteratorReturn, iterator, []); | |
} catch (e) { | |
// if we hit here, then "e" is the innerResult completion that needs re-throwing | |
completionThunk(); // throws if `completion` is a throw completion // step 6 | |
completionThunk = null; // ensure it's not called twice. | |
// if not, then return the innerResult completion | |
throw e; // step 7 | |
} | |
var completionRecord = completionThunk(); // if innerResult worked, then throw if the completion does | |
completionThunk = null; // ensure it's not called twice. | |
if (Type(innerResult) !== 'Object') { | |
throw new $TypeError('iterator .return must return an object'); | |
} | |
return completionRecord; | |
}; |