diff --git a/pkg/dart2wasm/bin/run_wasm.js b/pkg/dart2wasm/bin/run_wasm.js
index ef44cc503db..f15ab2dd9ad 100644
--- a/pkg/dart2wasm/bin/run_wasm.js
+++ b/pkg/dart2wasm/bin/run_wasm.js
@@ -42,6 +42,8 @@ const main = async () => {
         return new WebAssembly.Instance(compile(filename), imports);
     }
 
+    globalThis.window ??= globalThis;
+
     let importObject = {};
 
     // Is an FFI module specified?
diff --git a/pkg/dart2wasm/lib/target.dart b/pkg/dart2wasm/lib/target.dart
index 429be517168..f65addbad36 100644
--- a/pkg/dart2wasm/lib/target.dart
+++ b/pkg/dart2wasm/lib/target.dart
@@ -69,6 +69,7 @@ class WasmTarget extends Target {
         'dart:nativewrappers',
         'dart:io',
         'dart:js_interop',
+        'dart:js',
         'dart:js_util',
         'dart:wasm',
         'dart:developer',