Is there any particular reason

GraphQLServerLambda

does not have middleware property? Makes reuse difficult

Just noticed an issue that tracks this https://github.com/prismagraphql/graphql-yoga/issues/398 @matic: Implemented it, maybe you have more insights 🙂

GraphQLServerLambda

wraps

apollo-server-lambda

which does not use express.

Is there an alternative?

The middleware property is a shortcut to apply express middleware.

Can have a look

Not really. It implements the Lambda pattern, which does not need a server like express or hapi.

All I need is code to run before resolvers, extracting the userId from the token, also use graphql-shield

As Lambda is really intended for serverless functions, as soon as you start adding servers, middleware etc., perhaps you might consider some alternatives.

Could wrap the resolvers to run the "middleware"

userID from token you can do without midleware. But graphql-shield - yeah you will need express in there somewhere.