diff --git a/index.d.ts b/index.d.ts
index b4a95786..d17cf65a 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -18,10 +18,10 @@
 // blits file type reference
 /// <reference path="./blits.d.ts" />
 
-import {type ShaderEffect as RendererShaderEffect, type WebGlCoreShader, type RendererMainSettings} from '@lightningjs/renderer'
-
 declare module '@lightningjs/blits' {
-
+  type RendererShaderEffect = import('@lightningjs/renderer').ShaderEffect
+  type WebGlCoreShader = import('@lightningjs/renderer').WebGlCoreShader
+  type RendererMainSettings = import('@lightningjs/renderer').RendererMainSettings
 
   export interface AnnouncerUtteranceOptions {
     /**
@@ -209,7 +209,7 @@ declare module '@lightningjs/blits' {
   }
 
   export interface Input {
-    [key: string]: (event: KeyboardEvent) => void | undefined | unknown,
+    [key: string]: ((event: KeyboardEvent) => unknown) | undefined,
     /**
      * Catch all input function
      *
@@ -371,6 +371,29 @@ declare module '@lightningjs/blits' {
     // Empty by design: extend in your app via TypeScript module augmentation.
   }
 
+  export interface LanguagePlugin {
+    translate(key: string, ...replacements: any[]): string
+    readonly language: string
+    set(language: string): void
+    translations(translationsObject: Record<string, unknown>): void
+    load(file: string): Promise<void>
+  }
+
+  export interface ThemePlugin {
+    get<T = unknown>(key: string): T | undefined
+    get<T>(key: string, fallback: T): T
+    set(theme: string): void
+  }
+
+  export interface StoragePlugin {
+    get<T = unknown>(key: string): T | null
+    set(key: string, value: unknown): boolean
+    remove(key: string): void
+    clear(): void
+  }
+
+  export type AppStatePlugin<TState extends Record<string, unknown> = Record<string, unknown>> = TState
+
   export interface ComponentBase extends CustomComponentProperties {
     /**
     * Indicates whether the component currently has focus
@@ -633,7 +656,7 @@ declare module '@lightningjs/blits' {
   }
 
   export interface RouterHooks {
-    init?: () => Promise<> | void;
+    init?: () => Promise<void> | void;
     beforeEach?: (to: Route, from: Route) => string | Route | Promise<string | Route> | void;
     error?: (err: string) => string | Route | Promise<string | Route> | void;
   }
@@ -1301,3 +1324,32 @@ declare module '@lightningjs/blits' {
 
   export default Blits;
 }
+
+declare module '@lightningjs/blits/plugins' {
+  import type {
+    AppStatePlugin,
+    LanguagePlugin,
+    StoragePlugin,
+    ThemePlugin,
+  } from '@lightningjs/blits'
+
+  export const language: {
+    name: 'language'
+    plugin: (options?: Record<string, unknown>) => LanguagePlugin
+  }
+
+  export const theme: {
+    name: 'theme'
+    plugin: (config?: Record<string, unknown>) => ThemePlugin
+  }
+
+  export const appState: {
+    name: 'appState'
+    plugin: <TState extends Record<string, unknown>>(state?: TState) => AppStatePlugin<TState>
+  }
+
+  export const storage: {
+    name: 'storage'
+    plugin: () => StoragePlugin
+  }
+}