reset () {
    if (this[DISPOSE] &&
        this[LRU_LIST] &&
        this[LRU_LIST].length) {
      this[LRU_LIST].forEach(hit => this[DISPOSE](hit.key, hit.value))
    }

    this[CACHE] = new Map() // hash of items by key
    this[LRU_LIST] = new Yallist() // list of items in order of use recency
    this[LENGTH] = 0 // length of items in the list
  }
Get the current Node.js methods.
@private