fix tests after moving to pnpm

vitest.setup.ts

@@ -0,0 +1,51 @@
+const storage: Record<string, string> = {};
+const localStoragePolyfill = {
+  getItem(key: string) {
+    return Object.prototype.hasOwnProperty.call(storage, key)
+      ? storage[key]
+      : null;
+  },
+  setItem(key: string, value: string) {
+    storage[key] = String(value);
+  },
+  removeItem(key: string) {
+    delete storage[key];
+  },
+  clear() {
+    for (const key in storage) {
+      delete storage[key];
+    }
+  },
+  key(index: number) {
+    const keys = Object.keys(storage);
+    return keys[index] ?? null;
+  },
+  get length() {
+    return Object.keys(storage).length;
+  },
+} as unknown as Storage;
+
+if (
+  typeof globalThis.localStorage === "undefined" ||
+  typeof globalThis.localStorage.clear !== "function"
+) {
+  Object.defineProperty(globalThis, "localStorage", {
+    value: localStoragePolyfill,
+    writable: true,
+    configurable: true,
+  });
+}
+
+if (
+  typeof window !== "undefined" &&
+  (typeof window.localStorage === "undefined" ||
+    typeof window.localStorage.clear !== "function")
+) {
+  Object.defineProperty(window, "localStorage", {
+    value: localStoragePolyfill,
+    writable: true,
+    configurable: true,
+  });
+}
+
+import "./src/vitest.setup.ts";