livereload-hotjsloader.js

livereload-hotjsloader.js

"use strict";

(function() {
  window.LiveReloadPluginHotJSLoader = (function() {
    LiveReloadPluginHotJSLoader.identifier = 'livereload-hotjsloader';
    LiveReloadPluginHotJSLoader.version = '1.0';

    function LiveReloadPluginHotJSLoader(window, host) {
      this.window = window;
      this.host = host;
      this.debug = true;
      this.pathMatcher = /\.js/;
    }

    LiveReloadPluginHotJSLoader.prototype.reload = function(path) {
      if (path.match(this.pathMatcher)) {
        var scripts = document.getElementsByTagName('script');

        for (var i = 0; i < scripts.length; i++) {
          var oldScript = scripts[i];

          if (oldScript.src.match(new RegExp(path))) {
            var newScript = document.createElement('script');

            // Set the location of the script
            newScript.src = this.host.generateCacheBustUrl(oldScript.src);

            if (this.debug) {
              console.log(LiveReloadPluginHotJSLoader.identifier + ": " + newScript.src);
            }

            // Inject with insertBefore to avoid appendChild errors
            oldScript.parentNode.insertBefore(newScript, oldScript);

            // Remove old script
            oldScript.remove();
            return true;
          }
        }
      }
    };
    return LiveReloadPluginHotJSLoader;
  })();
})();