Backward function argument parsing style...

argparsing.js

module.exports = function (capture, handler, forceAll) {

    var args = Array.prototype.slice.call(arguments, 0);

    forceAll = args.pop();

    if (typeof(forceAll) != 'boolean') {
      handler = forceAll;
      forceAll = true;
    } else {
      handler = args.pop();
    }

    if (typeof(handler) != 'function') {
      capture = handler;
      handler = null;
    } else {
      capture = args.pop();
    }

    if (!Array.isArray(capture)) {
      if (capture) {
        args.push(capture);
        capture = args.slice(0);
      } else {
        capture = null;
      }
    }

    return {
      capture: capture,
      handler: handler,
      forceAll: forceAll
    };

};