Method save

src/client/common/cache.js:25–34

()

  }

  save () {
    const arr = []
    for (const [key, value] of this.cache) {
      arr.push({
        key,
        value
      })
    }
    safeSetItem(this.key, JSON.stringify(arr))
  }

  set (key, value) {
    this.cache.set(key, value)