package: update `ember-styleguide`, `ember-showdown-prism`, `ember-auto-import` deps

[geneukum]

At build time, a warning is logged:

Usages of the Ember Global may be caused by an outdated ember-cli-babel
dependency. The following steps may help:

* Upgrade the following addons to the latest version:
  * ember-styleguide

As such, let's bump to the newest version of this package. See https://github.com/ember-learn/ember-styleguide/releases for the package's release notes.

This should help along the way to achieving: #1272.

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[jenweber]

Removing the octane line from .template-lintrc.js should fix the failing test.

The failing linter command was npm run lint:hbs. I'm not sure why this PR's change in particular makes us hit that. I would have expected it to fail when I upgraded the template lint dependency itself, not here. Anyway, the config option for Octane was removed in ember-template-lint v4.

[geneukum]

Ah, sorry about that!

I'll take a look tonight and see if I can get a working change set out for your review.

[geneukum]

Hi @jenweber, I think that the linter issues are coming from ember deprecation-lint. At a high level, it looks like there are really two separate problems here:

• We (and our dependencies) depend on different incompatible versions of @ember/render-modifiers
• Our deprecation-lint config setting for the allowed versions of @ember-concurrency does not include the version that we and ember-styleguide both want to use.

Digging into the first issue a bit, the dependency tree looks like:

deprecation-app

├── @ember/render-modifiers@1.0.2
├─┬ ember-showdown-prism
│ └─┬ ember-prism
│   └── @ember/render-modifiers@1.0.2
└─┬ ember-styleguide
  └── @ember/render-modifiers@2.0.5

Interestingly, we do depend on render-modifiers, but don't appear to actually use it from what I can tell, so I submitted #1283 to remove that. For ember-showdown-prism, I went ahead and updated that in this pull request since it needs to be updated in lockstep with ember-styleguide. edit; Additionally, ember-showdown-prism depends on ember-auto-import v2 or greater, so I've pulled that in too.

For the second issue, since we and ember-styleguide want to use the same version, I think that we should just be able to remove that allowedVersion setting in the config/dependency-lint.js file to resolve the linter error.

I think that once https://github.com/ember-learn/deprecation-app/pull/1283 has been merged, this should lint successfully (or at least it did when I merged it locally).

Please let me know if there's anything else that I can do here! 😄

[jenweber]

I updated this branch with main after merging #1283. The tests are still unhappy, but this time we get a different error output:

this version of ember-auto-import requires the app to have a dependency on webpack 5

I think possibly this can be solved by installing webpack. It looks like they are still on v5.

npm install --save-dev webpack

[geneukum]

Ah, darn! I'm not sure why I'm not seeing that locally... I'll try your suggestion and see if that makes the CI happy. Sorry for the inconvenience here.

[geneukum]

Thanks for the suggestion, that seems to have done the trick!

Please let me know if there's anything else that we should do here. 😃