checkReadiness = count => {
                if (count >= this.options.minWorkers) {
                    resolve(true);
                    this.removeListener('workers-ready', checkReadiness);
                }
            }
This exposes the api of a module that the worker nodes are working on. If the module is a function, you
can call this directly. If the module exports multiple functions, you can call them as they were properties
of this proxy.

@type {Proxy}