Generate all runtime files from dart.

lib/src/codegen/js_interop.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dev_compiler.src.js_interop;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/constant.dart';
 
@@ skipping 30 matching lines @@
 /// instead of `@JS` from `package:js`).
 bool isJSExportNameAnnotation(DartObjectImpl value) {
   var e = value?.type?.element;
   if (e?.name != 'JSExportName') return false;
   var uri = e.source.uri;
   return uri.scheme == 'dart' && uri.path == '_foreign_helper';
 }
 
 bool isJsPeerInterface(DartObjectImpl value) =>
     value.type.name == 'JsPeerInterface';
+
+/// Whether this invocation represents a `genericTypeConstructor` intrinsic
+/// call, meant to be used only inside `JS` templates.
+///
+/// That intrinsic function is only to be used in JS expressions inside the SDK.
+/// For instance `JS('', '#(type)', genericTypeConstructor(List))` will
+/// generate `core.List$(type)`.
+bool isGenericTypeConstructorIntrinsic(MethodInvocation i) =>
+    _isJsLibType('genericTypeConstructor', i.methodName?.bestElement) &&
+    i.argumentList.arguments.length == 1;