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use std::sync::Once;
static INIT_LIB: Once = Once::new();
// export rules
pub mod rules;
// export selector
pub mod selector;
// interface
pub mod interface;
// export error
pub mod error;
// utils for crate
pub mod utils;
// constants
pub(crate) mod constants;

// export init, must execute `init()` first
pub fn init() {
	INIT_LIB.call_once(|| {
		rules::init();
	});
}