import * as moment from 'moment-timezone';

export async function promisify(method: (...params: any[]) => Promise<any> | void, ...params: any[]) {
  return new Promise((resolve, reject) => {
    method(...params, (err, result) => {
      if(err) {
        reject(err);
      } else {
        resolve(result);
      }
    })
  });
}

export function toIsoString(msTimestamp: number, timeZone: string): string {
  return moment.tz(msTimestamp, timeZone).format('YYYY-MM-DD HH:mm:ssZ').replace(/:00$/, '');
}