Confim prompt in Rust

confirm.rs

mod cli {
    use std::io::Write;

    #[derive(Debug, thiserror::Error)]
    pub enum CliError {
        #[error("failed to flush stdout: {0}")]
        Flush(std::io::Error),

        #[error("failed read line: {0}")]
        ReadLine(std::io::Error),
    }

    pub fn confirm(prompt: &str) -> Result<bool, CliError> {
        loop {
            print!("{} (Y/n): ", prompt);
            std::io::stdout().flush().map_err(CliError::Flush)?;

            let mut input = String::new();
            std::io::stdin()
                .read_line(&mut input)
                .map_err(CliError::ReadLine)?;

            match input.trim().to_lowercase().as_str() {
                "y" | "yes" => return Ok(true),
                "" => {
                    println!("Yes");
                    std::io::stdout().flush().map_err(CliError::Flush)?;
                    return Ok(true);
                }
                "n" | "no" => return Ok(false),
                _ => {
                    println!("Invalid input. Please enter 'y' or 'n'.")
                }
            }
        }
    }
}