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codeql-action/node_modules/es-abstract/2023/AsyncIteratorClose.js
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'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $SyntaxError = GetIntrinsic('%SyntaxError%'); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var $Promise = GetIntrinsic('%Promise%', true); | |
var Call = require('./Call'); | |
var CompletionRecord = require('./CompletionRecord'); | |
var GetMethod = require('./GetMethod'); | |
var Type = require('./Type'); | |
var assertRecord = require('../helpers/assertRecord'); | |
var callBound = require('call-bind/callBound'); | |
var $then = callBound('Promise.prototype.then', true); | |
// https://262.ecma-international.org/12.0/#sec-asynciteratorclose | |
module.exports = function AsyncIteratorClose(iteratorRecord, completion) { | |
assertRecord(Type, 'Iterator Record', 'iteratorRecord', iteratorRecord); // step 1 | |
if (!(completion instanceof CompletionRecord)) { | |
throw new $TypeError('Assertion failed: completion is not a Completion Record instance'); // step 2 | |
} | |
if (!$then) { | |
throw new $SyntaxError('This environment does not support Promises.'); | |
} | |
var iterator = iteratorRecord['[[Iterator]]']; // step 3 | |
return $then( | |
$then( | |
$then( | |
new $Promise(function (resolve) { | |
resolve(GetMethod(iterator, 'return')); // step 4 | |
// resolve(Call(ret, iterator, [])); // step 6 | |
}), | |
function (returnV) { // step 5.a | |
if (typeof returnV === 'undefined') { | |
return completion; // step 5.b | |
} | |
return Call(returnV, iterator); // step 5.c, 5.d. | |
} | |
), | |
null, | |
function (e) { | |
if (completion.type() === 'throw') { | |
completion['?'](); // step 6 | |
} else { | |
throw e; // step 7 | |
} | |
} | |
), | |
function (innerResult) { // step 8 | |
if (completion.type() === 'throw') { | |
completion['?'](); // step 6 | |
} | |
if (Type(innerResult) !== 'Object') { | |
throw new $TypeError('`innerResult` must be an Object'); // step 10 | |
} | |
return completion; | |
} | |
); | |
}; |