fix(overmind): fix typing of statemachine factory

Author: christianalfoni

packages/node_modules/overmind/src/statemachine.ts

@@ -100,12 +100,12 @@ export class StateMachine<Base extends IState, States extends TStates>  {
 }
 
 export type StatemachineFactory<States extends TStates, Base extends IState = never> = {
-  create(state: States, base: [Base] extends [never] ? void : States & Base): Statemachine<States, Base> 
+  create(state: [Base] extends [never] ? States : States & Base): Statemachine<States, Base> 
 }
 
 export function statemachine<States extends TStates, Base extends IState = never>(transitions: StatemachineTransitions<States, Base>): StatemachineFactory<States, Base> {
    return {
-     create(state, base) {
+     create(state) {
       return new StateMachine(transitions, state as any) as any
      }
    }