download file axios nodejs

1axios.get('https://xxx/my.pdf', {responseType: 'blob'}).then(response => {
2    fs.writeFile('/temp/my.pdf', response.data, (err) => {
3        if (err) throw err;
4        console.log('The file has been saved!');
5    });
6});
7

1export async function downloadFile(fileUrl: string, outputLocationPath: string) {
2  const writer = createWriteStream(outputLocationPath);
3
4  return Axios({
5    method: 'get',
6    url: fileUrl,
7    responseType: 'stream',
8  }).then(response => {
9
10    //ensure that the user can call `then()` only when the file has
11    //been downloaded entirely.
12
13    return new Promise((resolve, reject) => {
14      response.data.pipe(writer);
15      let error = null;
16      writer.on('error', err => {
17        error = err;
18        writer.close();
19        reject(err);
20      });
21      writer.on('close', () => {
22        if (!error) {
23          resolve(true);
24        }
25        //no need to call the reject here, as it will have been called in the
26        //'error' stream;
27      });
28    });
29  });
30}
31This way, you can call downloadFile(), call then() on the returned promise, and making sure that the downloaded file will have completed processing.
32
33Or, if you use a more modern version of NodeJS, you can try this instead:
34
35import * as stream from 'stream';
36import { promisify } from 'util';
37
38const finished = promisify(stream.finished);
39
40export async function downloadFile(fileUrl: string, outputLocationPath: string): Promise<any> {
41  const writer = createWriteStream(outputLocationPath);
42  return Axios({
43    method: 'get',
44    url: fileUrl,
45    responseType: 'stream',
46  }).then(async response => {
47    response.data.pipe(writer);
48    return finished(writer); //this is a Promise
49  });
50}