grpc-js: Fix compatibility with @types/node 17.0.6

Author: murgatroid99

packages/grpc-js/src/object-stream.ts

@@ -36,30 +36,17 @@ export interface IntermediateObjectWritable<T> extends Writable {
   write(chunk: any & T, cb?: WriteCallback): boolean;
   write(chunk: any & T, encoding?: any, cb?: WriteCallback): boolean;
   setDefaultEncoding(encoding: string): this;
-  end(): void;
-  end(chunk: any & T, cb?: Function): void;
-  end(chunk: any & T, encoding?: any, cb?: Function): void;
+  end(): this;
+  end(chunk: any & T, cb?: Function): this;
+  end(chunk: any & T, encoding?: any, cb?: Function): this;
 }
 
 export interface ObjectWritable<T> extends IntermediateObjectWritable<T> {
   _write(chunk: T, encoding: string, callback: Function): void;
   write(chunk: T, cb?: Function): boolean;
   write(chunk: T, encoding?: any, cb?: Function): boolean;
   setDefaultEncoding(encoding: string): this;
-  end(): void;
-  end(chunk: T, cb?: Function): void;
-  end(chunk: T, encoding?: any, cb?: Function): void;
+  end(): this;
+  end(chunk: T, cb?: Function): this;
+  end(chunk: T, encoding?: any, cb?: Function): this;
 }
-
-export type ObjectDuplex<T, U> = {
-  read(size?: number): U;
-
-  _write(chunk: T, encoding: string, callback: Function): void;
-  write(chunk: T, cb?: Function): boolean;
-  write(chunk: T, encoding?: any, cb?: Function): boolean;
-  end(): void;
-  end(chunk: T, cb?: Function): void;
-  end(chunk: T, encoding?: any, cb?: Function): void;
-} & Duplex &
-  ObjectWritable<T> &
-  ObjectReadable<U>;

packages/grpc-js/src/server-call.ts

@@ -236,7 +236,7 @@ export class ServerWritableStreamImpl<RequestType, ResponseType>
       this.trailingMetadata = metadata;
     }
 
-    super.end();
+    return super.end();
   }
 }
 
@@ -282,7 +282,7 @@ export class ServerDuplexStreamImpl<RequestType, ResponseType>
       this.trailingMetadata = metadata;
     }
 
-    super.end();
+    return super.end();
   }
 }
 
@@ -292,7 +292,6 @@ ServerDuplexStreamImpl.prototype._write =
   ServerWritableStreamImpl.prototype._write;
 ServerDuplexStreamImpl.prototype._final =
   ServerWritableStreamImpl.prototype._final;
-ServerDuplexStreamImpl.prototype.end = ServerWritableStreamImpl.prototype.end;
 
 // Unary response callback signature.
 export type sendUnaryData<ResponseType> = (