defineProp: Like Object.defineProperty but with a bitmask number instead of a complex object

defineProp.js

/*
| bitmask | enumerable | configurable | writable | accessor |
| ------- | ---------- | ------------ | -------- | -------- |
| 0       |            |              |          |          |
| 1       |    YES     |              |          |          |
| 2       |            |     YES      |          |          |
| 3       |    YES     |     YES      |          |          |
| 4       |            |              |   YES    |          |
| 5       |    YES     |              |   YES    |          |
| 6       |            |     YES      |   YES    |          |
| 7       |    YES     |     YES      |   YES    |          |
| 8       |            |              |          |   YES    |
| 9       |    YES     |              |          |   YES    |
| 10      |            |     YES      |          |   YES    |
| 11      |    YES     |     YES      |          |   YES    |
*/
function defineProp(object, name, bitmask, valueOrGetter, setter) {
	var descriptor = { configurable: bitmask & 2, enumerable: bitmask & 1 }
	if (bitmask & 4) descriptor.writable = true
	if (bitmask & 8) {
		descriptor.get = valueOrGetter
		descriptor.set = setter
	} else descriptor.value = valueOrGetter
	return Object.defineProperty(object, name, descriptor)
}
/* Example Usage:
defineProp({}, "arf", 2, "configurable value")
defineProp({}, "boo", 6, "configurable & writable value")
defineProp({}, "caw", 7, "configurable & writable & enumerable value") */

function defineProps(object, props) {
	for (var name in props) defineProp(object, name, props[name][0], props[name][1])
	return object
}
/* Example Usage:
defineProps({}, {
	arf: [2, "configurable value"],
	boo: [6, "configurable & writable value"],
	caw: [7, "configurable & writable & enumerable value"]
}) */