deps/moment-duration-format.js
function intersection(a, b) {
		var ret = [];
		
		each(a, function (_a) {
			each(b, function (_b) {
				if (_a === _b) { ret.push(_a); }
			});
		});
		
		return unique(ret);
	}
function intersection(a, b) {
		var ret = [];
		
		each(a, function (_a) {
			each(b, function (_b) {
				if (_a === _b) { ret.push(_a); }
			});
		});
		
		return unique(ret);
	}
intersection