The hook handlers for onRequest previously ensured that a passed in request would not be modified using a deepClone. We have remove this clone as a performance improvement - but this technically alters the ownership commitments of the onRequest hook.

So at a high level:

const myRequest = {...}
const response = await next(myRequest)
doSomething(myRequest)

Next previously commited to not mutating myRequest - so doSomething(myRequest) was safe. With the removal of clone we are mutating myRequest within next. In practice this is not currently an issue.

However, we can update the internal handlers applied in onRequest so that instead of updating in place, they return a new object.

See