[destus]

<script src="https://cdnjs.cloudflare.com/ajax/libs/co/4.1.0/index.min.js"></script>
	<script>
	function test() {
		return new Promise(function (success, error) {
			if(1 > 0) {
				success(true);
			}else{
				error(false);
			}
    });
}
	co(function* (){
		var check;
		
		check = yield test();
		
		alert(check);
	}).catch(e => alert(e))
	</script>