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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
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diff --git a/node_modules/es-abstract/2015/IteratorClose.js b/node_modules/es-abstract/2015/IteratorClose.js
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+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var Call = require('./Call');
+var GetMethod = require('./GetMethod');
+var IsCallable = require('./IsCallable');
+var Type = require('./Type');
+
+// https://ecma-international.org/ecma-262/6.0/#sec-iteratorclose
+
+module.exports = function IteratorClose(iterator, completion) {
+ if (Type(iterator) !== 'Object') {
+ throw new $TypeError('Assertion failed: Type(iterator) is not Object');
+ }
+ if (!IsCallable(completion)) {
+ throw new $TypeError('Assertion failed: completion is not a thunk for a Completion Record');
+ }
+ var completionThunk = completion;
+
+ var iteratorReturn = GetMethod(iterator, 'return');
+
+ if (typeof iteratorReturn === 'undefined') {
+ return completionThunk();
+ }
+
+ var completionRecord;
+ try {
+ var innerResult = Call(iteratorReturn, iterator, []);
+ } catch (e) {
+ // if we hit here, then "e" is the innerResult completion that needs re-throwing
+
+ // if the completion is of type "throw", this will throw.
+ completionThunk();
+ completionThunk = null; // ensure it's not called twice.
+
+ // if not, then return the innerResult completion
+ throw e;
+ }
+ 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;
+};