2016369 - Import attribute CSS fails with moz-extension:

Status: NEW

(Core :: JavaScript Engine, defect)

Description

[erosman [:erosman]]

The follow code fails in extension context and DevTools.
It works fine on Chrome.

import('/content/nav.css', {with: {type: 'css'}})
.then(console.log)
.catch(console.error);

// TypeError: error loading dynamically imported module: moz-extension://f5.../content/nav.css 

For reference, the following works fine on Firefox.

import('/manifest.json', {with: {type: 'json'}})
.then(console.log)
.catch(console.error);

Ubuntu 24.04
Nightly 149.0a1

Comment 1

[erosman [:erosman]]

See also: bug 1736059, bug 1986681

Comment 2

[Dan Minor [:dminor]]

I think this is likely the same problem as Bug 1989109, we use a different loader for internal modules, and that one doesn't support import attributes yet.

Comment 3

[Emilio Cobos Álvarez [:emilio]]

Hmm, but comment 0 seems to claim that json works, right? So probably not quite?