function safeGetStorage(key, fallback) {
  if (typeof tt === "undefined" || !tt.getStorageSync) {
    return fallback;
  }
  try {
    const value = tt.getStorageSync(key);
    if (value === undefined || value === null) {
      return fallback;
    }
    return value;
  } catch (error) {
    console.warn(`getStorageSync failed: ${key}`, error);
    return fallback;
  }
}

function safeSetStorage(key, value) {
  if (typeof tt === "undefined" || !tt.setStorageSync) {
    return;
  }
  try {
    tt.setStorageSync(key, value);
  } catch (error) {
    console.warn(`setStorageSync failed: ${key}`, error);
  }
}

module.exports = {
  safeGetStorage,
  safeSetStorage
};