gistfile1.js

function min(initial){
	return map(function(value){
		if(isNaN(initial) || value < initial){
			initial = value;
		}

		return initial;
	})
}

function accum(process, acc){
	return map(function(value){
		acc = process(acc, value);

		return acc;
	});
}

function getTargetValue(event){
	return event.target.value;
}

function sum(a, b){
	return a + b;
}

event(node, 'change')
	.pipe(map(getTargetValue))
	.pipe(accum(sum, 0))
	// .pipe(list())