jai shree ram

node_modules/es-abstract/2020/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/9.0/#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 new $Promise(function (resolve) {
+		var ret = GetMethod(iterator, 'return'); // step 4
+
+		if (typeof ret === 'undefined') {
+			resolve(completion); // step 5
+		} else {
+			resolve($then(
+				new $Promise(function (resolve2) {
+					// process.exit(42);
+					resolve2(Call(ret, iterator, [])); // step 6
+				}),
+				function (innerResult) {
+					if (Type(innerResult) !== 'Object') {
+						throw new $TypeError('`innerResult` must be an Object'); // step 10
+					}
+					return completion;
+				},
+				function (e) {
+					if (completion.type() === 'throw') {
+						completion['?'](); // step 8
+					} else {
+						throw e; // step 9
+					}
+				}
+			));
+		}
+	});
+};