Method push

lib/script/stack.js:221–225

* Push item onto stack. * @see Array#push * @param {Buffer} item * @returns {Number} Stack size.

(item)

   */

  push(item) {
    assert(Buffer.isBuffer(item));
    this.items.push(item);
    return this;
  }

  /**
   * Unshift item from stack.