text: import latestTime from './latestTime';
  
  // Increases ganache time by the passed duration in seconds
  export default function increaseTime (duration) {
      const id = Date.now();
  
      return new Promise((resolve, reject) => {
          web3.currentProvider.sendAsync({
              jsonrpc: '2.0',
              method: 'evm_increaseTime',
              params: [duration],
              id: id,
          }, err1 => {
              if (err1) return reject(err1);
  
              web3.currentProvider.sendAsync({
                  jsonrpc: '2.0',
                  method: 'evm_mine',
                  id: id + 1,
              }, (err2, res) => {
                  return err2 ? reject(err2) : resolve(res);
              });
          });
      });
  }
  
  /**
   * Beware that due to the need of calling two separate ganache methods and rpc calls overhead
   * it's hard to increase time precisely to a target point so design your test to tolerate
   * small fluctuations from time to time.
   *
   * @param target time in seconds
   */
  export function increaseTimeTo (target) {
      let now = latestTime();
      if (target < now) throw Error(`Cannot increase current time(${now}) to a moment in the past(${target})`);
      let diff = target - now;
      return increaseTime(diff);
  }
  
  export const duration = {
      seconds: function (val) { return val; },
      minutes: function (val) { return val * this.seconds(60); },
      hours: function (val) { return val * this.minutes(60); },
      days: function (val) { return val * this.hours(24); },
      weeks: function (val) { return val * this.days(7); },
      years: function (val) { return val * this.days(365); },
  };
  