[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/es-abstract/2025/IfAbruptCloseIterator.js

@@ -0,0 +1,19 @@
+'use strict';
+
+var $TypeError = require('es-errors/type');
+
+var CompletionRecord = require('./CompletionRecord');
+var IteratorClose = require('./IteratorClose');
+
+// https://262.ecma-international.org/16.0/#sec-ifabruptcloseiterator
+
+module.exports = function IfAbruptCloseIterator(value, iteratorRecord) {
+	if (!(value instanceof CompletionRecord)) {
+		throw new $TypeError('Assertion failed: `value` must be a Completion Record'); // step 1
+	}
+	if (value.type() === 'throw') {
+		return IteratorClose(iteratorRecord, value); // step 2
+	}
+
+	return value['!'](); // step
+};