Fix type of dereferenced byref

[chkn]

The type of the dereferenced value was incorrectly being marked as the type of the byref, when it should be the type of its contents.

In addition to the added test, this REPL also demonstrates the issue:
https://fable.io/repl/#?code=PTAEHUCcEsBcFNQGMD2ATRLKgDYoIZqj6gDO+AtgA46IBmkKFZ0GARvpAFBcpXwA7UADF8bWgDoAwlngSAUqQCSAhIyo8QoGVWjwiDJqAAWsWFVIAuEAHM4xgK5sJqCsDpjaAWle7akYFFxeGBxFDZgCnxoAWBSSCR3T3gvHGg2SE4AT2AAOXxYaAA3OTpSAGIAGQBGAAZarlpYUBi0gURSJwBBSEyspWocUAAKTj7LUAByABUAbQBdAEoR0lhOWAmY2GXh1AdVTdVliZmF0ABeLlBr0ABCW+Je-CyAflI0pHhh1fWAGjI1pBmgBqZAofbbHhNUCwSD7JAFRCjXoTNhZSDwOgAHlO8wAfDt2gB3ADK0AAXvBDtsLlcbmNQFivGRuk9+oNHthaqBiWTKTwgA&html=Q&css=Q

[MangelMaxime]

Hello @chkn,

I tested the added test that you made against the current version of REPL and it report 3 as you expected.

I also tried the test your added against the current version of the main branch of Fable and it passed too (without your Replacement changes).

This lead me to 2 directions:

1. The added test doesn't test the issue you are trying to fix
2. The issue you try to fix is already fixed in latest version of Fable?

Note: I am not sure what is the expected output of the REPL code your linked? Could you please tell me where is the wrong code and what it should have generated?

[chkn]

Hey @MangelMaxime,

Thanks for taking a look at my PR so quickly!

Apologies for not being clearer, the issue is only in the types, so you need to switch the REPL to TypeScript mode to see it:

The test case I added also failed to compile without my change when I ran the TypeScript tests like so:

./build.sh test typescript