Axios — Download Files & Images in Node.js

API 返回文件流。 經過 Axios 請求 API， 並將流轉化成文件保存。

'use strict'

const Fs = require('fs')  
const Path = require('path')  
const Axios = require('axios')

async function downloadImage () {

  const url = 'https://unsplash.com/photos/AaEQmoufHLk/download?force=true'
  const path = Path.resolve(__dirname, 'images', 'code.jpg')

  // axios image download with response type "stream"
  const response = await Axios({
    method: 'GET',
    url: url,
    responseType: 'stream'
  })

  // pipe the result stream into a file on disc
  response.data.pipe(Fs.createWriteStream(path))

  // return a promise and resolve when download finishes
  return new Promise((resolve, reject) => {
    response.data.on('end', () => {
      resolve()
    })

    response.data.on('error', () => {
      reject()
    })
  })

}

await downloadImage() 
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