src/expression-helpers.js
function toCompute(value) {
	if(value) {

		if(value.isComputed) {
			return value;
		}
		if(value.compute) {
			return value.compute;
		} else {
			return makeComputeLike(value);
		}
	}
	return value;
}
function toCompute(value) {
	if(value) {

		if(value.isComputed) {
			return value;
		}
		if(value.compute) {
			return value.compute;
		} else {
			return makeComputeLike(value);
		}
	}
	return value;
}
try to make it a compute no matter what.  This is useful for ~ operator.