chore: import upstream snapshot with attribution

tools/client-plugins/browser-scripts/index.d.ts

@@ -0,0 +1,28 @@
+import type { PyodideInterface } from 'pyodide';
+
+export interface FrameDocument extends Document {
+  __initTestFrame: (e: InitTestFrameArg) => Promise<void>;
+  __runTest: (
+    testString: string
+  ) => Promise<
+    { pass: boolean } | { err: { message: string; stack?: string } }
+  >;
+}
+
+export interface PythonDocument extends FrameDocument {
+  __initPythonFrame: () => Promise<void>;
+  __runPython: (code: string) => Promise<PyodideInterface>;
+}
+
+export interface InitTestFrameArg {
+  code: {
+    contents?: string;
+    editableContents?: string;
+  };
+  loadEnzyme?: () => void;
+}
+
+export type FrameWindow = Window &
+  typeof globalThis & {
+    $: typeof $;
+  };