Schema for manifest.json lists service_worker as required

[Vinnl]

🐛 bug report

When trying to use @parcel/config-webextension for a ManifestV3 WebExtension for Firefox, adding a background script results in an error: "Missing property service_worker".

However, since Firefox (and Safari too, IIRC) also support Event Pages, it is valid to have a background property without a service_worker.

(And in fact, adding the service_worker property at the time of writing will even cause an error, because SW support hasn't been implemented yet.)

🎛 Configuration (.babelrc, package.json, cli command)

Just trying to run Parcel with

parcel watch manifest.json --host localhost --config @parcel/config-webextension

🤔 Expected Behavior

Parcel should build the extension without errors.

😯 Current Behavior

Parcel complains about background not having a service_worker value.

💁 Possible Solution

Remove service_worker from the following line, or modify it to require either service_worker or scripts:

parcel/packages/transformers/webextension/src/schema.js

Line 460 in 0759d1b

required: ['service_worker'],

🔦 Context

I'm trying to use Parcel to build an MV3 WebExtension that will support at least both Firefox and Chrome.

🌍 Your Environment

Software	Version(s)
Parcel	2.7.0
Node	16.18.0
npm	8.19.2
Operating System	Fedora Silverblue 36