[repl] Errors use bad code format

[Brayan-724]

Using ezno from npm with deno.

❯ nix run nixpkgs#deno -- run -A npm:ezno repl
Entering REPL. Exit with `close()`
> // Unused code
> const x: 5 = 4 + 2;
error: 
  ┌─ CLI.tsx:1:14
  │
1 │ // Unused codeconst x: 5 = 4 + 2;
  │          -   ^^^^^ Type 6 is not assignable to type 5
  │          │    
  │          Variable declared with type 5

It appears to don't save new lines properly, exploring a few I found that repl source code append happens here and I think it could be fixed easy

[kaleidawave]

Interesting! Yes the REPL maintains a single file and appends entries to it. Haven't worked on the REPL in ages. I should check

1. That there is a new line character between entries
2. The "appended" AST has positions offset by the current source length

Will have a look at those two when I have the time. Maybe to do in #209

I wonder if there a way to add a test this? Need to spawn a REPL instance, pass some information over stdin and expect the stdout

---

1 │ // Unused codeconst x: 5 = 4 + 2;
  │          -   ^^^^^ Type 6 is not assignable to type 5
  │          │    
  │          Variable declared with type 5

is being confused as

1 │ const x: 5 = 4 + 2;
  │          -   ^^^^^ Type 6 is not assignable to type 5
  │          │    
  │          Variable declared with type 5

[kaleidawave]

Had a look and I think I can figure out a fix. I am also going to try and fix the other CLI JS problems #204 and #205 at the same time.

First I want to add a test. Moving the single file to use the new NodeJS testing framework. Also want to test the repl interaction. I don't know if @Brayan-724 you know about nodejs spawning a process, sending stdin, reading stdout. I am trying this but it hangs? 925cec9 (#209)

[kaleidawave]

This should be fixed in the latest release. Added some .strip calls to remove trailing new lines and stuff

I think there is currently a parser bug with new lines that you may encounter. Other than that I have got it working now