Initial CMPP frontend prototype

src/mock/storage.ts

@@ -0,0 +1,35 @@
+const STORAGE_PREFIX = 'cmpp-platform-v2';
+
+export function readLocalData<T>(key: string, fallback: T): T {
+  if (typeof window === 'undefined') {
+    return fallback;
+  }
+
+  const rawValue = window.localStorage.getItem(`${STORAGE_PREFIX}:${key}`);
+
+  if (!rawValue) {
+    return fallback;
+  }
+
+  try {
+    return JSON.parse(rawValue) as T;
+  } catch {
+    return fallback;
+  }
+}
+
+export function writeLocalData<T>(key: string, value: T) {
+  if (typeof window === 'undefined') {
+    return;
+  }
+
+  window.localStorage.setItem(`${STORAGE_PREFIX}:${key}`, JSON.stringify(value));
+}
+
+export function resetLocalData(key: string) {
+  if (typeof window === 'undefined') {
+    return;
+  }
+
+  window.localStorage.removeItem(`${STORAGE_PREFIX}:${key}`);
+}