node js url download

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Davide
05 Aug 2017
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}
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