refactor(common): extract frontmatter code into commons

Signed-off-by: Philip Molares <philip.molares@udo.edu>
Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

frontend/src/redux/application-state.d.ts

@@ -7,10 +7,10 @@ import type { Config } from '../api/config/types'
 import type { HistoryEntryWithOrigin } from '../api/history/types'
 import type { DarkModeConfig } from './dark-mode/types'
 import type { EditorConfig } from './editor/types'
+import type { NoteDetails } from './note-details/types/note-details'
 import type { RealtimeStatus } from './realtime/types'
 import type { RendererStatus } from './renderer-status/types'
 import type { OptionalUserState } from './user/types'
-import type { NoteDetails } from '@hedgedoc/commons'
 
 export interface ApplicationState {
   user: OptionalUserState

frontend/src/redux/note-details/reducers/build-state-from-first-heading-update.spec.ts

@@ -7,9 +7,14 @@ import { initialState } from '../initial-state'
 import { buildStateFromFirstHeadingUpdate } from './build-state-from-first-heading-update'
 
 // noinspection JSUnusedGlobalSymbols
-jest.mock('../generate-note-title', () => ({
-  generateNoteTitle: () => 'generated title'
-}))
+jest.mock(
+  '@hedgedoc/commons',
+  () =>
+    ({
+      ...jest.requireActual('@hedgedoc/commons'),
+      generateNoteTitle: () => 'generated title'
+    } as Record<string, unknown>)
+)
 
 describe('build state from first heading update', () => {
   it('generates a new state with the given first heading', () => {

frontend/src/redux/note-details/reducers/build-state-from-set-note-data-from-server.spec.ts

@@ -7,8 +7,8 @@ import type { Note } from '../../../api/notes/types'
 import * as buildStateFromUpdatedMarkdownContentModule from '../build-state-from-updated-markdown-content'
 import { initialSlideOptions } from '../initial-state'
 import type { NoteDetails } from '../types/note-details'
-import { NoteTextDirection, NoteType } from '../types/note-details'
 import { buildStateFromServerDto } from './build-state-from-set-note-data-from-server'
+import { NoteTextDirection, NoteType } from '@hedgedoc/commons'
 import { DateTime } from 'luxon'
 import { Mock } from 'ts-mockery'