pretty_panics is a crate that provides an easy way to customize panic messages and error messages.
If use-default-features is enabled, pretty_panics will provide default formatters for panics and errors.
use pretty_panics::pretty_panic;
#[pretty_panic]
fn main() -> std::result::Result<(), SomeDisplayError> {
...
}use pretty_panics::pretty_panic;
use thiserror::Error;
#[derive(Error, Debug)]
enum SimpleError {
#[error("an error")]
AnError
}
fn error_formatter(error: &SimpleError) -> String {
format!("uhhh something broke guys... {error}")
}
#[pretty_panic(formatter = error_formatter)]
fn main() -> anyhow::Result<(), SimpleError> {
Result::<(), SimpleError>::Err(SimpleError::AnError)?;
Ok(())
}caveats:
- requires your main fn to return a result
- you will lose the ability to get panic backtraces unless you implement your own formatter and include it
- you probably shouldn't use this tbh LMAO
- doesn't work with async main fns yet xd