Method saveToken

wxapp/fyzq.js:102–111

(token, extra = {})

  }

  saveToken(token, extra = {}) {
    if (!token) return;
    const cache = readCache();
    cache[this.account] = {
      token,
      ...extra,
      updatedAt: new Date().toISOString(),
    };
    writeCache(cache);
  }

  removeToken() {
    const cache = readCache();