src/index.js/create
export function create ( source, _options = {} ) {
	_options.format = 'eval';

	const compiled = compile( source, _options );

	if ( !compiled || !compiled.code ) {
		return;
	}

	let result;
	try {
		result = (new Function( 'return ' + compiled.code ))();
	} catch ( err ) {
		if ( _options.onerror ) {
			_options.onerror( err );
		} else {
			throw err;
		}
		return;
	}

	return result;
}