How to set Context inside a route definition?

[OnkelTem]

I wonder how can I set a context variable inside a route definition so that its parent could get this information?

For instance how to set the context.myParam in the following example:

compose(
  withView((request, context) => (
    const param = context.myParam  // <== 
    return (
      <DefaultPageLayout param={param}>
        <View/>
      </DefaultPageLayout>
    )
  ),
  mount({
    "/some-route": route({
      // ??? I take it I can do it here somehow
    })
  })
)

[jamesknelson]

I'd highly discourage this pattern, but that said, if you set an object on the context you should be able to mutate its properties from a child -- just like a React ref object.