How to write react navigation type

navigationType.ts

import { NativeStackScreenProps } from '@react-navigation/native-stack';

type StartStackParamList = {
  Start: undefined;
  Home: undefined;
  // .. something 
};

type OtherStackParamList = {
  OtherScreen: { other : string } | undefined;
  AnotherScreen?: { another : string }
}

type StackParamList = StartStackParamList & OtherStackParamList

export type RootStackParamList = {
  [key in keyof StackParamList]: StackParamList[key] extends infer Param
    ? Param extends undefined
      ? undefined | StackParamList[key]
      : StackParamList[key]
    : never;
};

export type RootStackScreenProps<Screen extends keyof RootStackParamList> =
  NativeStackScreenProps<RootStackParamList, Screen>;