Fetch Response Headers Mutable in Miniflare, not on Production

[nickreese]

Hey all, been working on a framework for building cloudflare workers to serve static sites.

In the development process I stumbled across a few bugs discussed on Discord but this one was asked for a ticket to be opened.

Below works in miniflare but not on production.:

const r = await fetch(`https://example.com`);

r.headers.set('foo', 'bar');

I found just by chance that this works on production:

const r = await fetch(`https://example.com`);

const rMutable = new Request(r.body, r);
rMutable.headers.set('foo', 'bar');

[mrbbot]

Hey! 👋 Thanks for raising this! I'm pretty busy the next few weeks with exams, but will try get this fixed soon. 👍

[mrbbot]

Hey! I've just released version 2.5.0 with a fix for this. Please let me know if you have any other issues.