Removing ReturnType helper, since it's part of the standard now.

PiperOrigin-RevId: 678871195

mediapipe/web/graph_runner/graph_runner.ts

@@ -8,7 +8,6 @@ import {CreateGraphRunnerApi, CreateMediaPipeLibApi, FileLocator, WasmMediaPipeC
 import {EmptyPacketListener, ErrorListener, SimpleListener, VectorListener} from './listener_types';
 import {WasmModule} from './wasm_module';
 
-export {type ReturnType} from './graph_runner_factory_api';
 // This file contains the internal implementations behind the public APIs
 // declared in "graph_runner_api.d.ts" and "graph_runner_factory_api.d.ts".
 

mediapipe/web/graph_runner/graph_runner_factory_api.d.ts

@@ -13,18 +13,6 @@ export declare interface FileLocator {
   mainScriptUrlOrBlob?: string;
 }
 
-/**
- * Helper type macro for use with createMediaPipeLib. Allows us to easily infer
- * the type of a mixin-extended GraphRunner. Example usage:
- * const GraphRunnerConstructor =
- *     SupportImage(SupportSerialization(GraphRunner));
- * let mediaPipe: ReturnType<typeof GraphRunnerConstructor>;
- * ...
- * mediaPipe = await createMediaPipeLib(GraphRunnerConstructor, ...);
- */
-// tslint:disable-next-line:no-any
-export type ReturnType<T> = T extends(...args: unknown[]) => infer R ? R : any;
-
 /**
  * Internal type of constructors used for initializing GraphRunner and
  * subclasses.