Plugin sockets with NodeBB 0.7.x

client.js

function callBack(config) {
  Katex.dollarInline = config.dollarInline;
  deferred.resolve(config);
}
// do the async call to the socket.
socket.emit('plugins.Katex.getConfig', callBack);

Plugin sockets with NodeBB 0.7.x

The gists to plugin sockets with NodeBB 0.7.x
Getting settings/values from the server to the client.
https://community.nodebb.org/topic/5936/retrieve-setting-value-from-the-client-side

server.js

var PluginSocket = require.main.require('./src/socket.io/plugins');

PluginSocket.Katex = {};
PluginSocket.Katex.getConfig = function (socket, callback) {
  var data = {
    dollarInline: _self.config.dollarInline,
  };
  callback(data);
};