no issue
- lazy loaded scripts such as the CodeMirror asset used on the Code Injection screen could throw errors such as `TypeError: Cannot set property 'modeOption' of undefined`
- this was caused by "loading" promise returned from the `lazyLoader` service returning as soon as the network request finished which can be before the loaded script has been parsed and run meaning any processing occurring after the promise returns could be depending on unloaded code
- switched the lazyLoader service's loading mechanism from an ajax fetch to insertion of a `<script>` tag which can have `load` event attached which _will_ return after parsing/loading has completed
no issue
- `Ember.testing` is or will soon be a getter/setter in Ember with the value set during a test, however destructuring will read the value when the module is evaluated
- moves all uses of `Ember.testing` inline
no issue
Automated tools, code generators, and editor integrations are increasingly standardising on the import style used in `ember-modules-codemod`. Our import style differed a little with regards to service/controller injection imports which meant we were starting to see inconsistent naming.
no issue
- add eslint-plugin-ember, configure no-old-shims rule
- run `eslint --fix` on `app`, `lib`, `mirage`, and `tests` to move imports to the new module imports
- further cleanup of Ember globals usage
- remove event-dispatcher initializer now that `canDispatchToEventManager` is deprecated
no issue
- add functionality for night mode feature flag using alternate
stylesheets
- modify lazy loader service to work with alternate stylesheets
- update feature service to use user accessibility property & add tests
no issue
- cleans up the interface to maintain consistency between loadScript and
loadStyle
- update gh-cm-editor component to await result of loadStyle
refs TryGhost/Ghost#6149
- concats codemirror.js and css on build, keeping them out of vendor.js
- add lazy-loader service to enable loading of external scripts
