HttpHandlerUserInput: HttpHandler | NodeHttpHandlerOptions | FetchHttpHandlerOptions | Record<string, unknown>

A type representing the accepted user inputs for the requestHandler field of a client's constructor object.

You may provide an instance of an HttpHandler, or alternatively provide the constructor arguments as an object which will be passed to the constructor of the default request handler.

The default class constructor to which your arguments will be passed varies. The Node.js default is the NodeHttpHandler and the browser/react-native default is the FetchHttpHandler. In rarer cases specific clients may be configured to use other default implementations such as Websocket or HTTP2.

The fallback type Record<string, unknown> is part of the union to allow passing constructor params to an unknown requestHandler type.