While making a call to a web api using fetch, I encountered an issue when attempting to read the response as a stream. Despite calling getReader() on response.body, I received the error message: "TypeError: response.body.getReader is not a function".
const fetch = require("node-fetch");
let response = await fetch(url);
let reader = response.body.getReader();
In the world of JavaScript, there exists a distinction between the implementation of fetch and that of node-fetch.
If you're interested in exploring this difference, you can experiment with the following code snippet:
const fetch = require('node-fetch');
fetch(url)
.then(response => response.body)
.then(res => res.on('readable', () => {
let chunk;
while (null !== (chunk = res.read())) {
console.log(chunk.toString());
}
}))
.catch(err => console.log(err));
The usage of res.body provides access to a Node native readable stream, allowing for data extraction through the use of the handy read() method.
To delve deeper into these distinctions, check out this link. Specifically, it sheds light on how res.body functions as a Node.js Readable stream for independent decoding purposes.
May this information prove useful to you!
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