diff --git a/packages/@uppy/core/src/BasePlugin.ts b/packages/@uppy/core/src/BasePlugin.ts
index b77de1e459..53bb06df8b 100644
--- a/packages/@uppy/core/src/BasePlugin.ts
+++ b/packages/@uppy/core/src/BasePlugin.ts
@@ -16,7 +16,7 @@ import type {
   OptionalPluralizeLocale,
 } from '@uppy/utils/lib/Translator'
 import type { Body, Meta } from '@uppy/utils/lib/UppyFile'
-import type { State, Uppy } from './Uppy'
+import type { State, UnknownPlugin, Uppy } from './Uppy'
 
 export type PluginOpts = {
   locale?: Locale
@@ -111,7 +111,7 @@ export default class BasePlugin<
    */
 
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
-  addTarget(plugin: unknown): HTMLElement {
+  addTarget(plugin: UnknownPlugin<M, B>): HTMLElement | null {
     throw new Error(
       "Extend the addTarget method to add your plugin to another plugin's target",
     )
diff --git a/packages/@uppy/core/src/UIPlugin.ts b/packages/@uppy/core/src/UIPlugin.ts
index e44072151b..e2d61291cb 100644
--- a/packages/@uppy/core/src/UIPlugin.ts
+++ b/packages/@uppy/core/src/UIPlugin.ts
@@ -137,7 +137,7 @@ class UIPlugin<
 
       this.onMount()
 
-      return this.el
+      return this.el!
     }
 
     const targetPlugin = this.getTargetPlugin(target)
@@ -148,7 +148,7 @@ class UIPlugin<
       this.el = targetPlugin.addTarget(plugin)
 
       this.onMount()
-      return this.el
+      return this.el!
     }
 
     this.uppy.log(`Not installing ${callerPluginName}`)
diff --git a/packages/@uppy/core/src/Uppy.ts b/packages/@uppy/core/src/Uppy.ts
index cea4386535..ec338d5812 100644
--- a/packages/@uppy/core/src/Uppy.ts
+++ b/packages/@uppy/core/src/Uppy.ts
@@ -132,7 +132,7 @@ export type UnknownSearchProviderPlugin<
   provider: CompanionClientSearchProvider
 }
 
-interface UploadResult<M extends Meta, B extends Body> {
+export interface UploadResult<M extends Meta, B extends Body> {
   successful?: UppyFile<M, B>[]
   failed?: UppyFile<M, B>[]
   uploadID?: string
@@ -156,10 +156,12 @@ export interface State<M extends Meta, B extends Body>
     uploadProgress: boolean
     individualCancellation: boolean
     resumableUploads: boolean
+    isMobileDevice?: boolean
+    darkMode?: boolean
   }
   currentUploads: Record<string, CurrentUpload<M, B>>
   allowNewUpload: boolean
-  recoveredState: null | State<M, B>
+  recoveredState: null | Required<Pick<State<M, B>, 'files' | 'currentUploads'>>
   error: string | null
   files: {
     [key: string]: UppyFile<M, B>
@@ -317,8 +319,9 @@ export interface _UppyEventMap<M extends Meta, B extends Body> {
   'preprocess-progress': PreProcessProgressCallback<M, B>
   progress: ProgressCallback
   'reset-progress': GenericEventCallback
-  restored: GenericEventCallback
+  restored: (pluginData: any) => void
   'restore-confirmed': GenericEventCallback
+  'restore-canceled': GenericEventCallback
   'restriction-failed': RestrictionFailedCallback<M, B>
   'resume-all': GenericEventCallback
   'retry-all': RetryAllCallback
@@ -635,7 +638,7 @@ export class Uppy<M extends Meta, B extends Body> {
 
   // @todo next major: rename to `clear()`, make it also cancel ongoing uploads
   // or throw and say you need to cancel manually
-  protected clearUploadedFiles(): void {
+  clearUploadedFiles(): void {
     this.setState({ ...defaultUploadState, files: {} })
   }
 
@@ -1713,7 +1716,7 @@ export class Uppy<M extends Meta, B extends Body> {
 
   #updateOnlineStatus = this.updateOnlineStatus.bind(this)
 
-  getID(): UppyOptions<M, B>['id'] {
+  getID(): string {
     return this.opts.id
   }
 
diff --git a/packages/@uppy/core/src/index.ts b/packages/@uppy/core/src/index.ts
index ca8462d6c9..6afec75f44 100644
--- a/packages/@uppy/core/src/index.ts
+++ b/packages/@uppy/core/src/index.ts
@@ -1,11 +1,12 @@
 export { default } from './Uppy.ts'
 export {
   default as Uppy,
-  type UppyEventMap,
   type State,
   type UnknownPlugin,
   type UnknownProviderPlugin,
   type UnknownSearchProviderPlugin,
+  type UploadResult,
+  type UppyEventMap,
 } from './Uppy.ts'
 export { default as UIPlugin } from './UIPlugin.ts'
 export { default as BasePlugin } from './BasePlugin.ts'