let startTime: number let endTime: number export function startMeasureTime(message: string) { startTime = new Date().getTime() console.log(message || 'start measure time') } export function endMeasureTime(message = '') { endTime = new Date().getTime() let timeDiff = endTime - startTime // in ms // strip the ms timeDiff /= 1000 // get seconds const seconds = Math.round(timeDiff) console.log(`finish ${message}: ${seconds}`) }