diff --git a/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html b/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html
index d806ea355..b09614061 100644
--- a/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html
+++ b/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html
@@ -41,7 +41,7 @@
 
             <div>
               <p-multiSelect
-                inputId="instanceCategories" [options]="categoryItems" formControlName="categories" showToggleAll="false"
+                inputId="instanceCategories" [options]="categoryItems" formControlName="categories" [showToggleAll]="false"
                 [defaultLabel]="getDefaultCategoryLabel()" [selectedItemsLabel]="getSelectedCategoryLabel()"
                 emptyFilterMessage="No results found" i18n-emptyFilterMessage
               ></p-multiSelect>
@@ -53,7 +53,7 @@
 
             <div>
               <p-multiSelect
-                inputId="instanceLanguages" [options]="languageItems" formControlName="languages" showToggleAll="false"
+                inputId="instanceLanguages" [options]="languageItems" formControlName="languages" [showToggleAll]="false"
                 [defaultLabel]="getDefaultLanguageLabel()" [selectedItemsLabel]="getSelectedLanguageLabel()"
                 emptyFilterMessage="No results found" i18n-emptyFilterMessage
               ></p-multiSelect>
diff --git a/client/src/app/+admin/follows/followers-list/followers-list.component.html b/client/src/app/+admin/follows/followers-list/followers-list.component.html
index 6b5f3b450..c532b5f32 100644
--- a/client/src/app/+admin/follows/followers-list/followers-list.component.html
+++ b/client/src/app/+admin/follows/followers-list/followers-list.component.html
@@ -6,7 +6,7 @@
     <div class="caption">
       <input
         type="text" name="table-filter" id="table-filter" i18n-placeholder placeholder="Filter..."
-        (keyup)="onSearch($event.target.value)"
+        (keyup)="onSearch($event)"
       >
     </div>
   </ng-template>
diff --git a/client/src/app/+admin/follows/following-list/following-list.component.html b/client/src/app/+admin/follows/following-list/following-list.component.html
index 5a252eda9..01aba0c11 100644
--- a/client/src/app/+admin/follows/following-list/following-list.component.html
+++ b/client/src/app/+admin/follows/following-list/following-list.component.html
@@ -7,7 +7,7 @@
       <div>
         <input
           type="text" name="table-filter" id="table-filter" i18n-placeholder placeholder="Filter..."
-          (keyup)="onSearch($event.target.value)"
+          (keyup)="onSearch($event)"
         >
       </div>
     </div>
diff --git a/client/src/app/+admin/plugins/plugin-search/plugin-search.component.html b/client/src/app/+admin/plugins/plugin-search/plugin-search.component.html
index 6ec6301b1..5f18028c9 100644
--- a/client/src/app/+admin/plugins/plugin-search/plugin-search.component.html
+++ b/client/src/app/+admin/plugins/plugin-search/plugin-search.component.html
@@ -3,7 +3,7 @@
 </div>
 
 <div class="search-bar">
-  <input type="text" (input)="onSearchChange($event.target.value)" i18n-placeholder placeholder="Search..."/>
+  <input type="text" (input)="onSearchChange($event)" i18n-placeholder placeholder="Search..."/>
 </div>
 
 <div class="alert alert-info" i18n *ngIf="pluginInstalled">
diff --git a/client/src/app/+admin/plugins/plugin-search/plugin-search.component.ts b/client/src/app/+admin/plugins/plugin-search/plugin-search.component.ts
index e08ded3f1..dc59e759b 100644
--- a/client/src/app/+admin/plugins/plugin-search/plugin-search.component.ts
+++ b/client/src/app/+admin/plugins/plugin-search/plugin-search.component.ts
@@ -70,8 +70,10 @@ export class PluginSearchComponent implements OnInit {
     this.reloadPlugins()
   }
 
-  onSearchChange (search: string) {
-    this.searchSubject.next(search)
+  onSearchChange (event: Event) {
+    const target = event.target as HTMLInputElement
+
+    this.searchSubject.next(target.value)
   }
 
   reloadPlugins () {
diff --git a/client/src/app/+admin/users/user-list/user-list.component.html b/client/src/app/+admin/users/user-list/user-list.component.html
index ca05bac19..249883efc 100644
--- a/client/src/app/+admin/users/user-list/user-list.component.html
+++ b/client/src/app/+admin/users/user-list/user-list.component.html
@@ -25,7 +25,7 @@
       <div>
         <input
           type="text" name="table-filter" id="table-filter" i18n-placeholder placeholder="Filter..."
-          (keyup)="onSearch($event.target.value)"
+          (keyup)="onSearch($event)"
         >
       </div>
     </div>
diff --git a/client/src/app/+my-account/my-account-settings/my-account-video-settings/my-account-video-settings.component.html b/client/src/app/+my-account/my-account-settings/my-account-video-settings/my-account-video-settings.component.html
index 17d8cde06..51a672734 100644
--- a/client/src/app/+my-account/my-account-settings/my-account-video-settings/my-account-video-settings.component.html
+++ b/client/src/app/+my-account/my-account-settings/my-account-video-settings/my-account-video-settings.component.html
@@ -28,7 +28,7 @@
 
     <div>
       <p-multiSelect
-        inputId="videoLanguages" [options]="languageItems" formControlName="videoLanguages" showToggleAll="true"
+        inputId="videoLanguages" [options]="languageItems" formControlName="videoLanguages" [showToggleAll]="true"
         [defaultLabel]="getDefaultVideoLanguageLabel()" [selectedItemsLabel]="getSelectedVideoLanguageLabel()"
         emptyFilterMessage="No results found" i18n-emptyFilterMessage
       ></p-multiSelect>
diff --git a/client/src/app/menu/avatar-notification.component.html b/client/src/app/menu/avatar-notification.component.html
index 7975afba5..df2a102a3 100644
--- a/client/src/app/menu/avatar-notification.component.html
+++ b/client/src/app/menu/avatar-notification.component.html
@@ -30,7 +30,7 @@
     </div>
 
     <my-user-notifications
-      [ignoreLoadingBar]="true" [infiniteScroll]="false" itemsPerPage="10"
+      [ignoreLoadingBar]="true" [infiniteScroll]="false" [itemsPerPage]="10"
       [markAllAsReadSubject]="markAllAsReadSubject" (notificationsLoaded)="onNotificationLoaded()"
     ></my-user-notifications>
 
diff --git a/client/src/app/menu/avatar-notification.component.ts b/client/src/app/menu/avatar-notification.component.ts
index 989a11849..c447f031c 100644
--- a/client/src/app/menu/avatar-notification.component.ts
+++ b/client/src/app/menu/avatar-notification.component.ts
@@ -6,7 +6,6 @@ import { Notifier, UserNotificationSocket } from '@app/core'
 import { NgbPopover } from '@ng-bootstrap/ng-bootstrap'
 import { NavigationEnd, Router } from '@angular/router'
 import { filter } from 'rxjs/operators'
-import { UserNotificationsComponent } from '@app/shared'
 
 @Component({
   selector: 'my-avatar-notification',
diff --git a/client/src/app/search/search-filters.component.html b/client/src/app/search/search-filters.component.html
index c275285d5..60680c7bd 100644
--- a/client/src/app/search/search-filters.component.html
+++ b/client/src/app/search/search-filters.component.html
@@ -146,7 +146,7 @@
           [(ngModel)]="advancedSearch.tagsAllOf" name="tagsAllOf" id="tagsAllOf"
           [validators]="tagValidators" [errorMessages]="tagValidatorsMessages"
           i18n-placeholder placeholder="+ Tag" i18n-secondaryPlaceholder secondaryPlaceholder="Enter a tag"
-          maxItems="5" modelAsStrings="true"
+          [maxItems]="5" [modelAsStrings]="true"
         ></tag-input>
       </div>
 
@@ -159,7 +159,7 @@
           [(ngModel)]="advancedSearch.tagsOneOf" name="tagsOneOf" id="tagsOneOf"
           [validators]="tagValidators" [errorMessages]="tagValidatorsMessages"
           i18n-placeholder placeholder="+ Tag" i18n-secondaryPlaceholder secondaryPlaceholder="Enter a tag"
-          maxItems="5" modelAsStrings="true"
+          [maxItems]="5" [modelAsStrings]="true"
         ></tag-input>
       </div>
     </div>
diff --git a/client/src/app/search/search.component.ts b/client/src/app/search/search.component.ts
index dfd8d8823..075994dd3 100644
--- a/client/src/app/search/search.component.ts
+++ b/client/src/app/search/search.component.ts
@@ -141,7 +141,8 @@ export class SearchComponent implements OnInit, OnDestroy {
     return this.advancedSearch.size()
   }
 
-  removeVideoFromArray (video: Video) {
+  // Add VideoChannel for typings, but the template already checks "video" argument is a video
+  removeVideoFromArray (video: Video | VideoChannel) {
     this.results = this.results.filter(r => !this.isVideo(r) || r.id !== video.id)
   }
 
diff --git a/client/src/app/shared/buttons/action-dropdown.component.ts b/client/src/app/shared/buttons/action-dropdown.component.ts
index a8b3ab16c..6649b092a 100644
--- a/client/src/app/shared/buttons/action-dropdown.component.ts
+++ b/client/src/app/shared/buttons/action-dropdown.component.ts
@@ -34,10 +34,10 @@ export class ActionDropdownComponent<T> {
   @Input() label: string
   @Input() theme: DropdownTheme = 'grey'
 
-  getActions () {
-    if (this.actions.length !== 0 && Array.isArray(this.actions[0])) return this.actions
+  getActions (): DropdownAction<T>[][] {
+    if (this.actions.length !== 0 && Array.isArray(this.actions[0])) return this.actions as DropdownAction<T>[][]
 
-    return [ this.actions ]
+    return [ this.actions as DropdownAction<T>[] ]
   }
 
   areActionsDisplayed (actions: Array<DropdownAction<T> | DropdownAction<T>[]>, entry: T): boolean {
diff --git a/client/src/app/shared/buttons/edit-button.component.ts b/client/src/app/shared/buttons/edit-button.component.ts
index 1fe4f7b30..9cfe1a3bb 100644
--- a/client/src/app/shared/buttons/edit-button.component.ts
+++ b/client/src/app/shared/buttons/edit-button.component.ts
@@ -8,5 +8,5 @@ import { Component, Input } from '@angular/core'
 
 export class EditButtonComponent {
   @Input() label: string
-  @Input() routerLink: string[] = []
+  @Input() routerLink: string[] | string = []
 }
diff --git a/client/src/app/shared/forms/markdown-textarea.component.ts b/client/src/app/shared/forms/markdown-textarea.component.ts
index 19cd37573..cbcfdfe78 100644
--- a/client/src/app/shared/forms/markdown-textarea.component.ts
+++ b/client/src/app/shared/forms/markdown-textarea.component.ts
@@ -21,7 +21,7 @@ import { MarkdownService } from '@app/shared/renderer'
 
 export class MarkdownTextareaComponent implements ControlValueAccessor, OnInit {
   @Input() content = ''
-  @Input() classes: string[] = []
+  @Input() classes: string[] | { [klass: string]: any[] | any } = []
   @Input() textareaWidth = '100%'
   @Input() textareaHeight = '150px'
   @Input() previewColumn = false
diff --git a/client/src/app/shared/images/preview-upload.component.ts b/client/src/app/shared/images/preview-upload.component.ts
index f56f5b1f8..85a2173e9 100644
--- a/client/src/app/shared/images/preview-upload.component.ts
+++ b/client/src/app/shared/images/preview-upload.component.ts
@@ -26,7 +26,7 @@ export class PreviewUploadComponent implements OnInit, ControlValueAccessor {
   allowedExtensionsMessage = ''
 
   private serverConfig: ServerConfig
-  private file: File
+  private file: Blob
 
   constructor (
     private sanitizer: DomSanitizer,
@@ -49,7 +49,7 @@ export class PreviewUploadComponent implements OnInit, ControlValueAccessor {
     this.allowedExtensionsMessage = this.videoImageExtensions.join(', ')
   }
 
-  onFileChanged (file: File) {
+  onFileChanged (file: Blob) {
     this.file = file
 
     this.propagateChange(this.file)
diff --git a/client/src/app/shared/rest/rest-table.ts b/client/src/app/shared/rest/rest-table.ts
index f44643c0f..a33e99e25 100644
--- a/client/src/app/shared/rest/rest-table.ts
+++ b/client/src/app/shared/rest/rest-table.ts
@@ -65,8 +65,9 @@ export abstract class RestTable {
       })
   }
 
-  onSearch (search: string) {
-    this.searchStream.next(search)
+  onSearch (event: Event) {
+    const target = event.target as HTMLInputElement
+    this.searchStream.next(target.value)
   }
 
   protected abstract loadData (): void
diff --git a/client/src/app/shared/user-subscription/subscribe-button.component.html b/client/src/app/shared/user-subscription/subscribe-button.component.html
index f08c88f3c..85b3d1fdb 100644
--- a/client/src/app/shared/user-subscription/subscribe-button.component.html
+++ b/client/src/app/shared/user-subscription/subscribe-button.component.html
@@ -55,7 +55,7 @@
       </button>
 
       <button class="dropdown-item dropdown-item-neutral" i18n>Subscribe with a Mastodon account:</button>
-      <my-remote-subscribe showHelp="true" [uri]="uri"></my-remote-subscribe>
+      <my-remote-subscribe [showHelp]="true" [uri]="uri"></my-remote-subscribe>
 
       <div class="dropdown-divider"></div>
 
diff --git a/client/src/app/shared/video/abstract-video-list.ts b/client/src/app/shared/video/abstract-video-list.ts
index c2fe6f754..2f5f82aa3 100644
--- a/client/src/app/shared/video/abstract-video-list.ts
+++ b/client/src/app/shared/video/abstract-video-list.ts
@@ -14,6 +14,7 @@ import { DisableForReuseHook } from '@app/core/routing/disable-for-reuse-hook'
 import { I18n } from '@ngx-translate/i18n-polyfill'
 import { isLastMonth, isLastWeek, isToday, isYesterday } from '@shared/core-utils/miscs/date'
 import { ServerConfig } from '@shared/models'
+import { GlobalIconName } from '@app/shared/images/global-icon.component'
 
 enum GroupDate {
   UNKNOWN = 0,
@@ -61,7 +62,7 @@ export abstract class AbstractVideoList implements OnInit, OnDestroy, DisableFor
 
   actions: {
     routerLink: string
-    iconName: string
+    iconName: GlobalIconName
     label: string
   }[] = []
 
diff --git a/client/src/app/shared/video/modals/video-blacklist.component.ts b/client/src/app/shared/video/modals/video-blacklist.component.ts
index f0c70a365..bdd9c7b99 100644
--- a/client/src/app/shared/video/modals/video-blacklist.component.ts
+++ b/client/src/app/shared/video/modals/video-blacklist.component.ts
@@ -1,12 +1,12 @@
 import { Component, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core'
 import { Notifier, RedirectService } from '@app/core'
 import { VideoBlacklistService } from '../../../shared/video-blacklist'
-import { VideoDetails } from '../../../shared/video/video-details.model'
 import { I18n } from '@ngx-translate/i18n-polyfill'
 import { FormValidatorService } from '@app/shared/forms/form-validators/form-validator.service'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
 import { FormReactive, VideoBlacklistValidatorsService } from '@app/shared/forms'
+import { Video } from '@app/shared/video/video.model'
 
 @Component({
   selector: 'my-video-blacklist',
@@ -14,7 +14,7 @@ import { FormReactive, VideoBlacklistValidatorsService } from '@app/shared/forms
   styleUrls: [ './video-blacklist.component.scss' ]
 })
 export class VideoBlacklistComponent extends FormReactive implements OnInit {
-  @Input() video: VideoDetails = null
+  @Input() video: Video = null
 
   @ViewChild('modal', { static: true }) modal: NgbModal
 
diff --git a/client/src/app/shared/video/modals/video-report.component.ts b/client/src/app/shared/video/modals/video-report.component.ts
index 1d368ff17..ee991fade 100644
--- a/client/src/app/shared/video/modals/video-report.component.ts
+++ b/client/src/app/shared/video/modals/video-report.component.ts
@@ -1,13 +1,13 @@
 import { Component, Input, OnInit, ViewChild } from '@angular/core'
 import { Notifier } from '@app/core'
 import { FormReactive } from '../../../shared/forms'
-import { VideoDetails } from '../../../shared/video/video-details.model'
 import { I18n } from '@ngx-translate/i18n-polyfill'
 import { FormValidatorService } from '@app/shared/forms/form-validators/form-validator.service'
 import { VideoAbuseValidatorsService } from '@app/shared/forms/form-validators/video-abuse-validators.service'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
 import { VideoAbuseService } from '@app/shared/video-abuse'
+import { Video } from '@app/shared/video/video.model'
 
 @Component({
   selector: 'my-video-report',
@@ -15,7 +15,7 @@ import { VideoAbuseService } from '@app/shared/video-abuse'
   styleUrls: [ './video-report.component.scss' ]
 })
 export class VideoReportComponent extends FormReactive implements OnInit {
-  @Input() video: VideoDetails = null
+  @Input() video: Video = null
 
   @ViewChild('modal', { static: true }) modal: NgbModal
 
diff --git a/client/src/app/shared/video/video-thumbnail.component.ts b/client/src/app/shared/video/video-thumbnail.component.ts
index 2420ec715..111b4c8bb 100644
--- a/client/src/app/shared/video/video-thumbnail.component.ts
+++ b/client/src/app/shared/video/video-thumbnail.component.ts
@@ -12,7 +12,7 @@ export class VideoThumbnailComponent {
   @Input() video: Video
   @Input() nsfw = false
   @Input() routerLink: any[]
-  @Input() queryParams: any[]
+  @Input() queryParams: { [ p: string ]: any }
 
   @Input() displayWatchLaterPlaylist: boolean
   @Input() inWatchLaterPlaylist: boolean
diff --git a/client/src/app/videos/+video-edit/shared/video-edit.component.html b/client/src/app/videos/+video-edit/shared/video-edit.component.html
index e40649d95..6d72e5765 100644
--- a/client/src/app/videos/+video-edit/shared/video-edit.component.html
+++ b/client/src/app/videos/+video-edit/shared/video-edit.component.html
@@ -29,7 +29,7 @@
               <tag-input
                 [validators]="tagValidators" [errorMessages]="tagValidatorsMessages"
                 i18n-placeholder placeholder="+ Tag" i18n-secondaryPlaceholder secondaryPlaceholder="Enter a new tag"
-                formControlName="tags" maxItems="5" modelAsStrings="true"
+                formControlName="tags" [maxItems]="5" [modelAsStrings]="true"
               ></tag-input>
             </div>
 
@@ -44,7 +44,7 @@
                 </ng-template>
               </my-help>
 
-              <my-markdown-textarea truncate="250" formControlName="description" markdownVideo="true"></my-markdown-textarea>
+              <my-markdown-textarea [truncate]="250" formControlName="description" [markdownVideo]="true"></my-markdown-textarea>
 
               <div *ngIf="formErrors.description" class="form-error">
                 {{ formErrors.description }}
diff --git a/client/src/app/videos/+video-watch/comment/video-comment-add.component.ts b/client/src/app/videos/+video-watch/comment/video-comment-add.component.ts
index 1be96ad9e..a8c432653 100644
--- a/client/src/app/videos/+video-watch/comment/video-comment-add.component.ts
+++ b/client/src/app/videos/+video-watch/comment/video-comment-add.component.ts
@@ -25,7 +25,7 @@ export class VideoCommentAddComponent extends FormReactive implements OnInit {
   @Input() parentComments: VideoComment[]
   @Input() focusOnInit = false
 
-  @Output() commentCreated = new EventEmitter<VideoCommentCreate>()
+  @Output() commentCreated = new EventEmitter<VideoComment>()
   @Output() cancel = new EventEmitter()
 
   @ViewChild('visitorModal', { static: true }) visitorModal: NgbModal
@@ -96,7 +96,7 @@ export class VideoCommentAddComponent extends FormReactive implements OnInit {
     this.addingComment = true
 
     const commentCreate: VideoCommentCreate = this.form.value
-    let obs: Observable<any>
+    let obs: Observable<VideoComment>
 
     if (this.parentComment) {
       obs = this.addCommentReply(commentCreate)
diff --git a/client/src/app/videos/+video-watch/comment/video-comment-thread-tree.model.ts b/client/src/app/videos/+video-watch/comment/video-comment-thread-tree.model.ts
new file mode 100644
index 000000000..1566d7369
--- /dev/null
+++ b/client/src/app/videos/+video-watch/comment/video-comment-thread-tree.model.ts
@@ -0,0 +1,7 @@
+import { VideoCommentThreadTree as VideoCommentThreadTreeServerModel } from '../../../../../../shared/models/videos/video-comment.model'
+import { VideoComment } from '@app/videos/+video-watch/comment/video-comment.model'
+
+export class VideoCommentThreadTree implements VideoCommentThreadTreeServerModel {
+  comment: VideoComment
+  children: VideoCommentThreadTree[]
+}
diff --git a/client/src/app/videos/+video-watch/comment/video-comment.component.ts b/client/src/app/videos/+video-watch/comment/video-comment.component.ts
index 61f9335d1..f7eca45fd 100644
--- a/client/src/app/videos/+video-watch/comment/video-comment.component.ts
+++ b/client/src/app/videos/+video-watch/comment/video-comment.component.ts
@@ -1,6 +1,5 @@
 import { Component, EventEmitter, Input, OnChanges, OnInit, Output } from '@angular/core'
 import { User, UserRight } from '../../../../../../shared/models/users'
-import { VideoCommentThreadTree } from '../../../../../../shared/models/videos/video-comment.model'
 import { AuthService } from '@app/core/auth'
 import { AccountService } from '@app/shared/account/account.service'
 import { Video } from '@app/shared/video/video.model'
@@ -10,6 +9,7 @@ import { Account } from '@app/shared/account/account.model'
 import { Notifier } from '@app/core'
 import { UserService } from '@app/shared'
 import { Actor } from '@app/shared/actor/actor.model'
+import { VideoCommentThreadTree } from '@app/videos/+video-watch/comment/video-comment-thread-tree.model'
 
 @Component({
   selector: 'my-video-comment',
diff --git a/client/src/app/videos/+video-watch/comment/video-comment.model.ts b/client/src/app/videos/+video-watch/comment/video-comment.model.ts
index aaeb0ea9c..171fc4acc 100644
--- a/client/src/app/videos/+video-watch/comment/video-comment.model.ts
+++ b/client/src/app/videos/+video-watch/comment/video-comment.model.ts
@@ -1,5 +1,5 @@
 import { Account as AccountInterface } from '../../../../../../shared/models/actors'
-import { VideoComment as VideoCommentServerModel } from '../../../../../../shared/models/videos/video-comment.model'
+import { VideoComment as VideoCommentServerModel, VideoCommentCreate } from '../../../../../../shared/models/videos/video-comment.model'
 import { Actor } from '@app/shared/actor/actor.model'
 import { getAbsoluteAPIUrl } from '@app/shared/misc/utils'
 
diff --git a/client/src/app/videos/+video-watch/comment/video-comment.service.ts b/client/src/app/videos/+video-watch/comment/video-comment.service.ts
index a81e5236a..0b0715390 100644
--- a/client/src/app/videos/+video-watch/comment/video-comment.service.ts
+++ b/client/src/app/videos/+video-watch/comment/video-comment.service.ts
@@ -7,13 +7,14 @@ import { FeedFormat, ResultList } from '../../../../../../shared/models'
 import {
   VideoComment as VideoCommentServerModel,
   VideoCommentCreate,
-  VideoCommentThreadTree
+  VideoCommentThreadTree as VideoCommentThreadTreeServerModel
 } from '../../../../../../shared/models/videos/video-comment.model'
 import { environment } from '../../../../environments/environment'
 import { RestExtractor, RestService } from '../../../shared/rest'
 import { ComponentPaginationLight } from '../../../shared/rest/component-pagination.model'
 import { CommentSortField } from '../../../shared/video/sort-field.type'
 import { VideoComment } from './video-comment.model'
+import { VideoCommentThreadTree } from '@app/videos/+video-watch/comment/video-comment-thread-tree.model'
 
 @Injectable()
 export class VideoCommentService {
@@ -76,9 +77,9 @@ export class VideoCommentService {
     const url = `${VideoCommentService.BASE_VIDEO_URL + videoId}/comment-threads/${threadId}`
 
     return this.authHttp
-               .get(url)
+               .get<VideoCommentThreadTreeServerModel>(url)
                .pipe(
-                 map(tree => this.extractVideoCommentTree(tree as VideoCommentThreadTree)),
+                 map(tree => this.extractVideoCommentTree(tree)),
                  catchError(err => this.restExtractor.handleError(err))
                )
   }
@@ -138,12 +139,12 @@ export class VideoCommentService {
     return { data: comments, total: totalComments }
   }
 
-  private extractVideoCommentTree (tree: VideoCommentThreadTree) {
-    if (!tree) return tree
+  private extractVideoCommentTree (tree: VideoCommentThreadTreeServerModel) {
+    if (!tree) return tree as VideoCommentThreadTree
 
     tree.comment = new VideoComment(tree.comment)
     tree.children.forEach(c => this.extractVideoCommentTree(c))
 
-    return tree
+    return tree as VideoCommentThreadTree
   }
 }
diff --git a/client/src/app/videos/+video-watch/comment/video-comments.component.ts b/client/src/app/videos/+video-watch/comment/video-comments.component.ts
index 47720b0ea..750c09c47 100644
--- a/client/src/app/videos/+video-watch/comment/video-comments.component.ts
+++ b/client/src/app/videos/+video-watch/comment/video-comments.component.ts
@@ -1,8 +1,7 @@
-import { Component, ElementRef, Input, OnChanges, OnDestroy, OnInit, SimpleChanges, ViewChild, Output, EventEmitter } from '@angular/core'
+import { Component, ElementRef, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, SimpleChanges, ViewChild } from '@angular/core'
 import { ActivatedRoute } from '@angular/router'
 import { ConfirmService, Notifier } from '@app/core'
 import { Subject, Subscription } from 'rxjs'
-import { VideoCommentThreadTree } from '../../../../../../shared/models/videos/video-comment.model'
 import { AuthService } from '../../../core/auth'
 import { ComponentPagination, hasMoreItems } from '../../../shared/rest/component-pagination.model'
 import { User } from '../../../shared/users'
@@ -13,6 +12,7 @@ import { VideoCommentService } from './video-comment.service'
 import { I18n } from '@ngx-translate/i18n-polyfill'
 import { Syndication } from '@app/shared/video/syndication.model'
 import { HooksService } from '@app/core/plugins/hooks.service'
+import { VideoCommentThreadTree } from '@app/videos/+video-watch/comment/video-comment-thread-tree.model'
 
 @Component({
   selector: 'my-video-comments',
diff --git a/client/src/app/videos/+video-watch/modal/video-share.component.html b/client/src/app/videos/+video-watch/modal/video-share.component.html
index 549a9f30e..593dd8529 100644
--- a/client/src/app/videos/+video-watch/modal/video-share.component.html
+++ b/client/src/app/videos/+video-watch/modal/video-share.component.html
@@ -42,7 +42,7 @@
         <ngb-tab i18n-title title="QR-Code" id="qrcode">
           <ng-template ngbTabContent>
             <div class="tab-content">
-              <qrcode [qrdata]="getVideoUrl()" size="256" level="Q"></qrcode>
+              <qrcode [qrdata]="getVideoUrl()" [size]="256" level="Q"></qrcode>
             </div>
           </ng-template>
         </ngb-tab>
diff --git a/client/tsconfig.json b/client/tsconfig.json
index c4f2d6a6a..fbdeb6d5d 100644
--- a/client/tsconfig.json
+++ b/client/tsconfig.json
@@ -37,6 +37,7 @@
   },
   "angularCompilerOptions": {
     "strictInjectionParameters": true,
-    "fullTemplateTypeCheck": true
+    "fullTemplateTypeCheck": true,
+    "strictTemplates": true
   }
 }
diff --git a/shared/models/plugins/register-server-setting.model.ts b/shared/models/plugins/register-server-setting.model.ts
index 65a181705..45d79228d 100644
--- a/shared/models/plugins/register-server-setting.model.ts
+++ b/shared/models/plugins/register-server-setting.model.ts
@@ -1,7 +1,7 @@
 export interface RegisterServerSettingOptions {
   name: string
   label: string
-  type: 'input'
+  type: 'input' | 'input-checkbox' | 'input-textarea'
 
   // If the setting is not private, anyone can view its value (client code included)
   // If the setting is private, only server-side hooks can access it