Remove unneeded conditional compilation

[lpil]

Hello!

It seems there's code like this in this library:

/// hello!
pub fn thing() -> X {
  do_thing()
}

@target(erlang)
@external(erlang, "a", "b")
fn do_thing() -> X

@target(javascript)
@external(javascript, "a.mjs", "b")
fn do_thing() -> X

This can be written more concisely like so, and it'll also remove the extra function call

/// hello!
@external(erlang, "a", "b")
@external(javascript, "a.mjs", "b")
pub fn thing() -> X

Is there a reason you want to have the conditional compilation?

[bcpeinhardt]

If you look at the function signatures, they actually have slightly different return types. I'm stringifying the error in JavaScript and converting it to the correct type in Gleam, because I wasn't sure how to turn it into a correct runtime representation in the JavaScript.

I do want to consolidate this code, just haven't gone through the trouble of figuring it out quite yet :)

[lpil]

Ah I see! My bad. Thank you