New Lab 2

vitest.setup.ts

@@ -0,0 +1,31 @@
+import "@testing-library/jest-dom/vitest";
+
+function createStorageMock() {
+  const store = new Map<string, string>();
+
+  return {
+    clear() {
+      store.clear();
+    },
+    getItem(key: string) {
+      return store.get(key) ?? null;
+    },
+    key(index: number) {
+      return Array.from(store.keys())[index] ?? null;
+    },
+    removeItem(key: string) {
+      store.delete(key);
+    },
+    setItem(key: string, value: string) {
+      store.set(key, value);
+    },
+    get length() {
+      return store.size;
+    },
+  };
+}
+
+Object.defineProperty(window, "localStorage", {
+  configurable: true,
+  value: createStorageMock(),
+});