liquor-tree/src/utils/stack.js

A Vue.js tree component.

export class List extends Array {
  empty () {
    this.splice(0, this.length)

    return this
  }

  has (item) {
    return this.includes(item)
  }

  add (...items) {
    this.push(...items)

    return this
  }

  remove (item) {
    const index = this.indexOf(item)

    if (index === -1) {
      return this
    }

    this.splice(index, 1)

    return this
  }

  removeAll (item) {
    while (this.includes(item)) {
      this.remove(item)
    }

    return this
  }

  top () {
    return this[this.length - 1]
  }
}