How to JS-throw error in then() to be catched in catch()

I have a use case that is not easy to handle with AuraHandledExceptions alone. Before I query a lot of records in Apex I first count them. Depending on the resultCount I want the below JS code to eighter fire a new callback or throw the same type of error that an Apex side exception would have thrown. Why? So I can handle it with the same LAX catch.

Is that possible?

 cmp.lax.enqueue("c.countResults")
    .then((resultCount) => {
        if(resultCount < 1000)
            return cmp.lax.enqueue("c.queryData");
        }
        else {
            // Throw error to be catched and display in below catch
        }
    })
    .then((result) => {
        ...
    })
    .catch((e) => {
        cmp.find("toast").toastError(e);
    });

[rsoesemann]

Works like a charm.

[ruslan-kurchenko]

@rsoesemann I’ve completed this item 😃 Could you help me to test that on your side?

Here is feature branch with this particular change: https://github.com/ruslan-kurchenko/sfdc-lax/tree/feature/remove-aura-error-message-prefix