happn-3/lib/services/connect/middleware/client.js

pub/sub api as a service using primus and mongo & redis or nedb, can work as cluster, single process or embedded using nedb

module.exports = ClientMiddleware;

ClientMiddleware.prototype.initialize = initialize;
ClientMiddleware.prototype.process = _process;
ClientMiddleware.prototype.cached = null;

function ClientMiddleware() {}

function initialize() {
  this.happn.log('Client middleware loaded');
}

async function _process(req, res, next) {
  try {
    var Happn = require('../../..');

    if (req.url !== '/browser_client') return next();

    res.setHeader('Content-Type', 'application/javascript');

    var browserOptions = {
      contentsOnly: true,
    };

    if (process.env.NODE_ENV && process.env.NODE_ENV.toLowerCase() === 'production') {
      browserOptions.min = true;
    }

    const packagedClient = await Happn.packager.browserClient(browserOptions);
    res.end(packagedClient);
  } catch (e) {
    next(e);
  }
}