core/request/engines/xhr

This module provides a function that creates a request engine based on the XMLHttpRequest API. Mind, this API is developed to work in a browser — node.js support only for tests.

Synopsis

• The engine is used by default in a browser if it doesn't support AbortController.
• The engine partly supports response streaming (only total/loaded fields without data).
• The engine provides a bunch of internal events.

Example

import xhrEngine from 'core/request/engines/xhr';

const req = req('/search', {engine: xhrEngine}).then(({response}) => {
  console.log(response.decode());
});

req.emitter.on('progress', () => {
  // ..
});

req.emitter.on('upload.progress', () => {
  // ..
});