Method isEmpty

src/Chain.js:358–365

* Returns true if chain contains an empty string, zero Unicode * characters or zero bytes. * @return {boolean}

()

   * @return {boolean}
   */
  isEmpty () {
    return (
      this === emptyChain ||
      (this._codePoints !== null && this._codePoints.length === 0) ||
      (this._string !== null && this._string === '') ||
      (this._bytes !== null && this._bytes.length === 0)
    )
  }

  /**
   * Returns true if this chain's content is equal to given chain's content.