make a http request with a custom body as multipart form data in typescript

To make an HTTP request with a custom body as multipart form data in TypeScript, you can use the Axios library. Here is an example code snippet to demonstrate how to do this:

index.ts
import axios from 'axios';

const formData = new FormData();
formData.append('username', 'john');
formData.append('password', 'doe');

axios.post('/api/login', formData, { headers: { 'Content-Type': 'multipart/form-data' } })
  .then(response => {
    console.log(response.data);
  })
  .catch(error => {
    console.error(error);
  });
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In this code, we first create a new instance of the FormData class and add the required fields to it. Then, we use the Axios post method to make the HTTP request, passing in the URL, the formData object, and a header specifying the Content-Type as multipart/form-data. Finally, we handle the response or catch any errors that may occur.

Note that this is just one example and there are many other ways you can make HTTP requests with custom bodies using different libraries and techniques in TypeScript.