Depends on your version target.
Your example is exactly correct for Node < v4 (aside from the arrow functions). Since Node v4 you can make it a bit simpler if you don't need to rename your export properties:
const func1 = ( ) => { }
const func2 = ( ) => { }
const funcThree = ( ) => { }
module.exports = {
func1,
func2,
func3: funcThree
}
And with Node v10 LTS you should use:
export const func1 = ( ) => { }
export const func2 = ( ) => { }
export const funcThree = ( ) => { }
// And optional/aditional:
export default {
func1,
func2,
func3: funcThree,
}