Proposal

In whatwg/xhr#394 we are proposing updating ProgressEvent from taking 64-bit integers to taking 64-bit floats (doubles).

The MDN page at https://developer.mozilla.org/en-US/docs/Web/API/ProgressEvent mentions 64-bit integers explicitly.

The main motivation for this is upcoming APIs that are still a ways away from shipping. However, it will immediately impact web developers by allowing them to pass a wider range of values than they currently can when doing new ProgressEvent().

Browser support

This will probably make it into Chromium 135 or 136, and other browsers seem keen to follow shortly (e.g. Firefox has a patch ready to land).

Tasks

• Update https://developer.mozilla.org/en-US/docs/Web/API/ProgressEvent
• Update https://developer.mozilla.org/en-US/docs/Web/API/ProgressEvent/loaded
• Update https://developer.mozilla.org/en-US/docs/Web/API/ProgressEvent/total

Dependencies

No response

Additional information

• Chromium Intent to Ship
• WebKit bug
• Gecko bug

Are you willing to support this work?

I can help review such changes