Need a way to edit permissible MIME types

[AskYous]

I'm trying to serve an mjs file but the browser rejects using it. It says:

Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.

[kzahel]

Would a process like this work for you...

- open chrome://inspect, inspect web server background page
- type WSC.addMimeType('mjs','application/javascript')

you would have to do this each time you install web server on a new computer.

(don't try this, I didn't code it yet)

[AskYous]

Yes, that would be fine. But ideally, it would be somewhere in the advanced settings:

That would make it easy and I can see the MIME types I added in case I forget they're there in the future. Appreciate your work!

[Sti2nd]

Just bumped into this issue.

The server could just support JavaScript modules by returning the correct MIME-type? Modules are coming, and they require correct MIME type https://developers.google.com/web/fundamentals/primers/modules

I would propose to change this issue to "Support JavaScript modules" since that was the original problem

[aiden-w-135752345]

I guess something similar also needs to happen for .wasm to application/wasm.
WSC.addMimeType('wasm','application/wasm')
will this stay fixed after my Chromebook restarts?

edit: WSC.addMimeType does not exist, do WSC.MIMETYPES.wasm="application/wasm"

[kzahel]

This will be included by default in the next release:

cb300b1 (Chris Chou 2019-02-25 20:32:53 +1300 875) "wasm": "application/wasm",
0329c4e (Ahmet Kizilay 2018-11-11 17:32:53 -0500 442) "mjs": "application/javascript",