cant import middleware as es6 module

Hey, i'm trying to consume the middleware module as esm moudle with no luck
tried
**import {eventContext} from '@vendia/serverless-express/middleware'**
but got an error stating there is no such module.

how can import the middleware (in order to get the eventContext) in a modern way (i'm using version 3.4.0)
p.s all the examples in docs wont show how to use import but only the require way .
thanks