5.ts

process.on('message', (tasks: imageType[]) => {
  ;(async () => {
    const data = tasks
      .filter(({ path }: { path: string }) => /\.(jpe?g|png)$/.test(path))
      .map(ele => {
        return compressImg({ ...ele, file: Buffer.from(ele.file) })
      })

    const svgaData = tasks
      .filter(({ path }: { path: string }) => /\.(svga)$/.test(path))
      .map(ele => {
        return compressSvga(ele.path, Buffer.from(ele.file))
      })

    const details = await Promise.all([
      ...data.map(fn => fn()),
      ...svgaData.map(fn => fn())
    ])

    await Promise.all(
      details.map(
        ({ path, file }) =>
          new Promise((resolve, reject) => {
            fs.writeFile(path, file, err => {
              if (err) reject(err)
              resolve(true)
            })
          })
      )
    )

    if (process.send) {
      process.send(details)
    }
  })()
})