Apply tail call optimsation on JS when piping into self with a function capture about gleam

[giacomocavalieri]

I'd like to give this a try!

[lpil]

Please include the code that doesn't optimise 🙏

[giacomocavalieri]

Ooh sorry I thought I did 😅 Edited the original message to include the code

[lpil]

This is due to the function capture being used. If you run the formatter it would be removed and the resulting code would be optimised. It would be nice to optimise for the captures too though.

[giacomocavalieri]

Yeah I think this optimisation would be really nice to have, it bit me with glam because in the pretty printing loop I did a lot of this:

list.map(docs, fn(doc) { #(indent, mode, doc) })
|> list.append(rest)
|> do_to_string(acc, max_width, current_width, _)

Thinking the do_to_string function would be optimised and never noticed until someone built a really big document 😂