refactor start

home/ags/node_modules/es-abstract/2020/IteratorClose.js

@@ -1,49 +0,0 @@
-'use strict';
-
-var $TypeError = require('es-errors/type');
-
-var Call = require('./Call');
-var CompletionRecord = require('./CompletionRecord');
-var GetMethod = require('./GetMethod');
-var IsCallable = require('./IsCallable');
-var Type = require('./Type');
-
-// https://262.ecma-international.org/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) && !(completion instanceof CompletionRecord)) {
-		throw new $TypeError('Assertion failed: completion is not a thunk representing a Completion Record, nor a Completion Record instance');
-	}
-	var completionThunk = completion instanceof CompletionRecord ? function () { return completion['?'](); } : 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;
-};