k-highway/lib/server/bundle.js

Websocket and browserchannel transport for Racer

var path = require('path');
var through = require('through');
var extend = require('extend');

var defaultClientOptions = {
  base: '/ws',
  reconnect: true,
  browserChannelOnly: false,
  srvProtocol: undefined,
  srvHost: undefined,
  srvPort: undefined,
  srvSecurePort: undefined,
  timeout: 10000,
  timeoutIncrement: 10000
};

module.exports = function(clientOptions) {
  clientOptions = clientOptions || {};
  clientOptions = extend({}, defaultClientOptions, clientOptions);

  var clientOptionsJson = JSON.stringify(clientOptions);

  // Add the client side script to the Browserify bundle. Set the clientOptions
  // needed to connect to the corresponding server by injecting them into the
  // file during bundling
  return function(bundle) {
    var browserFilename = path.join(__dirname, '../browser/index.js');
    bundle.transform(function(filename) {
      if (filename !== browserFilename) return through();
      var file = '';
      return through(
        function write(data) {
          file += data;
        }
        , function end() {
          var rendered = file.replace('{{clientOptions}}', clientOptionsJson);
          this.queue(rendered);
          this.queue(null);
        }
      );
    });
    bundle.add(browserFilename);
  };
}