How to call a function from the same module from a module?

Question

Node.js

How can I access the getCmdReadConfig() method?

module.exports = (idses)=>{
    return {
        connConfig: (port, ip) => {
            //	.............................
        },
        getVersion: (idses) => {
            req = getCmdReadConfig(idses, 1, 0x01)
        },
        getCmdReadConfig: (idses, type, num, par=0x00) => {
            //.....................	
        }
    }
}