launcher/app/main/SinceTimeTool.js

let globalSinceTime = {}

async function sinceTime(title = '默认标记') {
  try {
    let startTime = 0
    if (performance) {
      startTime = performance.now()
    } else {
      startTime = new Date().getTime()
    }
    globalSinceTime[title] = startTime
    return Promise.resolve(true)
  } catch (e) {
    return Promise.reject(e)
  }
}

async function sinceTimeEnd(title = '默认标记') {
  try {
    let endTime = 0
    if (performance) {
      endTime = performance.now()
    } else {
      endTime = new Date().getTime()
    }
    let startTime = 0
    if (globalSinceTime.hasOwnProperty(title)) {
      startTime = globalSinceTime[title]
    }
    let since = endTime - startTime
    console.log(title + ' 耗时:', since, '毫秒')
    return Promise.resolve(since)
  } catch (e) {
    return Promise.reject(e)
  }
}

exports.sinceTime = sinceTime
exports.sinceTimeEnd = sinceTimeEnd