fix: ignore ./locale import from moment/min/moment-with-locales

[ShGKme]

Fixes compatibility between @nextcloud/webpack-vue-config and @nextcloud/moment@1.3.0 (since migration to Vite).

@nextcloud/moment uses moment/min/moment-with-locales.js, which works only in Node.js and is not compatible with Webpack bundling. It has an unused function localLocale that requires locales by invalid relative path ./locale. Though it is not used, Webpack tries to resolve it with require.context and fails.

Example of issue in Talk, same in Text and other apps:

WARNING in ./spreed/node_modules/moment/min/moment-with-locales.js 2159:16-50
Module not found: Error: Can't resolve './locale' in '<...>\talk-desktop\spreed\node_modules\moment\min'

See also:

• Import in @nextcloud/moment: https://github.com/nextcloud-libraries/nextcloud-moment/blob/c73f43f7e7713a92bad98251aad22b3cd57a757e/lib/index.ts#L1
• moment/min/moment-with-locales.js: https://github.com/moment/moment/blob/develop/min/moment-with-locales.js#L2159
• https://webpack.js.org/plugins/ignore-plugin/ (even Webpack uses it as an example for Ignore plugin)

[ShGKme]

A fix on @nextcloud/moment side could be better, cc @susnux if you have any ideas.

[susnux]

How would you fix it? The problem is that we otherwise need to import every local in @nextcloud/moment manually.

[ShGKme]

How would you fix it? The problem is that we otherwise need to import every local in @nextcloud/moment manually.

I dunno, that is why I mentioned you =D

I didn't dig much into what happens in @nextcloud/moment and what/why was changed during the migration to Vite. The source issue is in the moment itself. That require is not correct in the moment's source, and it is so a classic issue that Webpack docs show the fix as an example of the IgnorePlugin usage. So we can fix it on the Webpack config side, but the fix on @nextcloud/moment seems less breaking.

Probably, import.glob in Vite + manual locales registration may work.

Anyway, I'm fine with merging this PR to fix the problem as well.

[susnux]

Probably, import.glob in Vite + manual locales registration may work.

This does only work with local imports not with modules 😶