RelativeDate Node.js module

index.js

exports.parse = function (string, format) {
	var match = string.match(/^(\+|-)\s*(\d+)\s*([a-z]{3})/i);
	var add;
	if (!match) {
		add = 0;
	} else {
		add = parseInt(match[2], 10);
		switch (match[3]) {
		case 'min':
			add *= 60;
			break;
		case 'hou':
			add *= 3600;
			break;
		case 'day':
			add *= 3600 * 24;
			break;
		case 'wee':
			add *= 3600 * 24 * 7;
			break;
		case 'mon':
			add *= 3600 * 24 * 30;
			break;
		case 'yea':
			add *= 3600 * 24 * 365;
			break;
		}
		if (match[1] === '-') {
			add = -add;
		}
	}

	if (format) {
		var date = new Date();
		var now = date.getTime();
		date.setTime(now + add * 1000);
		return date[format]();
	}
	return add;
};

package.json

{
  "author": "Jan Kuča <jan@jankuca.com> (http://jankuca.com)",
  "name": "relative-datetime",
  "description": "Relative Date converter, + 1 year -> seconds",
  "version": "1.0.0",
  "repository": {
    "type": "git",
    "url": "https://gist.github.com/788114"
  },
  "main": "index.js",
  "dependencies": {},
  "devDependencies": {},
  "optionalDependencies": {},
  "engines": {
    "node": "*"
  }
}