Adds CORS support (XDomainRequest) for IE7+ still through XMLHttpRequest

Details in developit#106
3F · Jan 8, 2019 · 7d18541 · 7d18541
1 parent 1670b30
commit 7d18541
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Showing 2 changed files with 8 additions and 5 deletions.
diff --git a/src/index.mjs b/src/index.mjs
@@ -11,8 +11,10 @@ export default function(url, options) {
 
  request.withCredentials = options.credentials=='include';
 
- request.onload = () => {
- resolve(response());
+ request.onreadystatechange = function() {
+ if(this.readyState === 4 && this.status === 200) {
+ resolve(response());
+ }
  };
 
  request.onerror = reject;

diff --git a/test/index.js b/test/index.js
@@ -20,6 +20,7 @@ describe('unfetch', () => {
  getAllResponseHeaders: jest.fn().mockReturnValue('X-Foo: bar\nX-Foo:baz'),
  open: jest.fn(),
  send: jest.fn(),
+ readyState: 4,
  status: 200,
  statusText: 'OK',
  responseText: '{"a":"b"}',
@@ -60,10 +61,10 @@ describe('unfetch', () => {
  expect(xhr.send).toHaveBeenCalledWith(null);
  });
 
- expect(xhr.onload).toEqual(expect.any(Function));
+ expect(xhr.onreadystatechange).toEqual(expect.any(Function));
  expect(xhr.onerror).toEqual(expect.any(Function));
 
- xhr.onload();
+ xhr.onreadystatechange();
 
  return p;
  });
@@ -76,7 +77,7 @@ describe('unfetch', () => {
  expect(r.headers.get('X-foo')).toEqual('baz');
  });
 
- xhr.onload();
+ xhr.onreadystatechange();
 
  return p;
  });