auto-reload-brunch/vendor/auto-reload.js

Adds automatic browser reloading support to brunch.

(function() {
  var WebSocket = window.WebSocket || window.MozWebSocket;
  var br = window.brunch = (window.brunch || {});
  var ar = br['auto-reload'] = (br['auto-reload'] || {});
  if (!WebSocket || ar.disabled) return;

  var cacheBuster = function(url){
    var date = Math.round(Date.now() / 1000).toString();
    url = url.replace(/(\&|\\?)cacheBuster=\d*/, '');
    return url + (url.indexOf('?') >= 0 ? '&' : '?') +'cacheBuster=' + date;
  };

  var reloaders = {
    page: function(){
      window.location.reload(true);
    },

    stylesheet: function(){
      [].slice
        .call(document.querySelectorAll('link[rel="stylesheet"]'))
        .filter(function(link){
          return (link != null && link.href != null);
        })
        .forEach(function(link) {
          link.href = cacheBuster(link.href);
        });
    }
  };
  var port = ar.port || 9485;
  var host = (!br['server']) ? window.location.hostname : br['server'];
  var connection = new WebSocket('ws://' + host + ':' + port);
  connection.onmessage = function(event) {
    var message = event.data;
    if (ar.disabled) return;
    if (reloaders[message] != null) {
      reloaders[message]();
    } else {
      reloaders.page();
    }
  };
})();