declare comptime class Logger {
    Logger({level: LoggerLevel}) {}

    fn with_field(key: str, value: any) -> Logger

    fn with_error(err: error) -> Logger

    fn debug()

    fn info()

    fn warn()

    fn error()

    fn fatal()
}

type LoggerLevel = 'debug' | 'info' | 'warn' | 'error' | 'fatal'

declare comptime {
    fn with_field(key: str, value: any) -> Logger

    fn with_error(err: error) -> Logger

    fn debug()

    fn info()

    fn warn()

    fn error()

    fn fatal()
}