prototype/proof of concept: A mac notification tool for Gulp. See https://github.com/mikaelbr/gulp-notify for full code

gulp-notify.js

// From prototype/proof of concept. See https://github.com/mikaelbr/gulp-notify for full code

var es = require("event-stream"),
    path = require("path"),
    result = require("lodash.result"),
    notifier = require("node-notifier");

module.exports = function (options) {
  "use strict";

  function notify(file, callback) {
    var message = "", title = "Gulp notification";

    if (!options) {
      callback(new Error("gulp-notify: No message, function or object passed - no notification to give"), undefined);
    }

    if (typeof options === "function") {
      message = options(file);
    }

    if (typeof options === "object") {
      title = result(options, "title") || title;
      message = result(options, "message") || message;
    }

    if (typeof options === "string") {
      message = options;
    }

    notifier.notify({
      title: title,
      message: message
    }, callback);
  }

  return es.map(notify);
};