Method from

lib/btc/amount.js:207–220

* Inject properties from unit. * @private * @param {String} unit * @param {Number|String} value * @returns {Amount}

(unit, value)

   */

  from(unit, value) {
    switch (unit) {
      case 'sat':
        return this.fromSatoshis(value);
      case 'ubtc':
      case 'bits':
        return this.fromBits(value);
      case 'mbtc':
        return this.fromMBTC(value);
      case 'btc':
        return this.fromBTC(value);
    }
    throw new Error(`Unknown unit "${unit}".`);
  }

  /**
   * Instantiate amount from options.