Using fetch api with Readable #4137
Description
Details
I'm really excited about Node.js natively supporting a fetch API. Previously I have used node-fetch and form-data for sending content with contentType multipart/form-data. In my use case I have been grabbing an AWS s3 object and sending that file in my request. I'm having trouble doing this with the native fetch API. I noticed that AWS has started to support transforming their GetObjectBody to byteArrays or WebStreams, but unsure how to leverage these.
My thinking is that I would append formdata like the following: formData.append("attachments", new Blob([await s3Object.Body.transormToByteArray()]), but this appears to time out.
Node.js version
18.5.0
Example code
// This used to work:
import FormData from "form-data"; // would like to use Node.JS FormData
import fetch from "node-fetch"; // would like to use Node.JS fetch
const s3Client = new S3Client({});
const formData = new FormData();
// This is a PDF file
const s3Object = await s3Client.send(
new GetObjectCommand({
Bucket: BUCKET_NAME,
Key: BUCKET_KEY,
})
);
// Would expect to change the following line to:
// formData.append("attachments", new Blob([await s3Object.Body.transormToByteArray()])
formData.append("attachments", s3Object.Body);
const response = await fetch(API_URL, {
method: "POST",
headers: {
Authorization: API_KEY,
ContentType: "multipart/form-data",
},
body: formData,
});Operating system
Linux
Scope
fetch API
Module and version
fetch