js get stream response from API post request

To get the stream response from an API post request in JavaScript, you can use the built-in Fetch API. Here's an example code snippet:

fetch('https://example.com/api', {
  method: 'POST',
  body: JSON.stringify({data: 'example'}),
  headers: {
    'Content-Type': 'application/json'
  }
})
.then(response => {
  const reader = response.body.getReader();
  return new ReadableStream({
    start(controller) {
      function push() {
        reader.read().then(({ done, value }) => {
          if (done) {
            controller.close();
            return;
          }
          controller.enqueue(value);
          push();
        })
      }
      push();
    }
  })
})
.then(stream => {
  const reader = stream.getReader();
  return new Response(reader);
})
.then(response => {
  // do something with the response
})
.catch(error => {
  // handle the error
});

In this example, we're making a POST request to an API endpoint and passing some data in the request body. We're setting the Content-Type header to indicate that we're sending JSON data.

Once we get the response, we're creating a ReadableStream from the response body using the getReader() method. We're then creating a new Response object from the stream and using it to handle the response.

This code snippet is just an example, and you may need to modify it depending on your specific use case.