js stream using featch post api

To create a JS stream using fetch and POST API, follow the steps below:

Create a new instance of the ReadableStream object:

const stream = new ReadableStream({
  start(controller) {
    // Implement your stream logic here
  }
});

In the start method, use the fetch API to make a POST request to your API endpoint:

const stream = new ReadableStream({
  start(controller) {
    fetch('https://your-api-endpoint.com', {
      method: 'POST',
      body: JSON.stringify({ /* your data */ })
    })
    .then(response => {
      // Implement your response handling logic here
    })
    .catch(error => {
      // Implement your error handling logic here
    });
  }
});

Within the response handling logic, use the controller.enqueue method to add the response data to the stream:

const stream = new ReadableStream({
  start(controller) {
    fetch('https://your-api-endpoint.com', {
      method: 'POST',
      body: JSON.stringify({ /* your data */ })
    })
    .then(response => {
      response.body
      .pipeThrough(new TextDecoderStream())
      .pipeTo(new WritableStream({
        write(chunk) {
          controller.enqueue(chunk);
        }
      }));
    })
    .catch(error => {
      // Implement your error handling logic here
    });
  }
});

You can now consume the stream data using a for await...of loop:

(async function() {
  for await (const chunk of stream) {
    // Implement your data processing logic here
  }
})();