I don't know which layer is the root cause, so I report things as they are.

To reproduce:

• Visit https://oxc-project.github.io/oxc/playground/
• Remove placeholders and paste this line

1< [1.[[[[[[{[a[y <(f[{[y [_<\\u &_<\\u         & [_y <([{[a[<([{[a[y0<([{[_<\\u &_<\\u         & [_y <([{[a[y <([{[y <([{[a[y <([{[_<\\u &_A\\u &

• Set the File option to either ts or d.ts
• See REPL freeze