Initial Commit

packages/ui/forms/react-forms/tests/setup/polyfills.ts

@@ -0,0 +1,37 @@
+// React-specific polyfill layer. The base webcrypto polyfill is loaded via
+// `@suaveplan/testing/polyfills` (see vitest.config.ts setupFiles). This
+// file adds the React 18+ `IS_REACT_ACT_ENVIRONMENT` global expected by
+// React DOM when assertions are made outside an `act(...)` wrapper, plus
+// a `ResizeObserver` shim used by react-hook-form's controller in some
+// happy-dom branches.
+
+interface ReactActEnvWindow {
+    IS_REACT_ACT_ENVIRONMENT?: boolean;
+}
+
+const win = globalThis as unknown as ReactActEnvWindow;
+if (win.IS_REACT_ACT_ENVIRONMENT === undefined) {
+    win.IS_REACT_ACT_ENVIRONMENT = true;
+}
+
+interface MaybeResizeObserverGlobal {
+    ResizeObserver?: unknown;
+}
+
+class ResizeObserverPolyfill {
+    public observe(): void {
+        // no-op: happy-dom does not lay out elements, so observed entries
+        // would always carry size 0 — the polyfill is structural only.
+    }
+    public unobserve(): void {
+        // no-op
+    }
+    public disconnect(): void {
+        // no-op
+    }
+}
+
+const maybeRO = globalThis as unknown as MaybeResizeObserverGlobal;
+if (maybeRO.ResizeObserver === undefined) {
+    maybeRO.ResizeObserver = ResizeObserverPolyfill;
+}