No type definitions for objectMode?

Somehow, the objectMode option has disappeared in the TypeScript definition. I wonder, it is still supported?

Here is my code:

const stream = websocket(ws, {
  // Important, send each chunk on its own, see
  // https://github.com/maxogden/websocket-stream/issues/117#issuecomment-298826011
  objectMode: true,
});

It produces this error

No overload matches this call.
  Overload 1 of 2, '(target: string | WebSocket, options?: ClientOptions | undefined): WebSocketDuplex', gave the following error.
    Object literal may only specify known properties, and 'objectMode' does not exist in type 'ClientOptions'.
  Overload 2 of 2, '(target: string | WebSocket, protocols?: string | string[] | undefined, options?: ClientOptions | undefined): WebSocketDuplex', gave the following error.
    Object literal may only specify known properties, and 'objectMode' does not exist in type 'string[]'.

I'm using latest websocket-stream version 5.5.2

There is one interesting I've found out in the type declarations:

declare function WebSocketStream(target: string | WebSocket, options?: WebSocket.ClientOptions): WebSocketStream.WebSocketDuplex;

WebSocket.ClientOptions itself stems from @types/ws where the ClientOptions are being extended by SecureContextOptions which comes from @types/node. To me, it seems there are some version mismatches, perhaps?

For now, I will @tsignore it, but am not comfortable about it.

Advice, discussions welcome. Thanks.

Start with the WebSocketStream declaration shown in the issue and trace the ClientOptions type through @types/ws and @types/node. Confirm whether objectMode is supported, then make the declaration accept it and verify that the provided TypeScript example type-checks without an ignore directive.