Defining types for functions without arguments about vuex-type-helper HOT 4 CLOSED

I really wanted to be able to enforce types a little better in my project, and based on your work, this is what I came up with: https://gist.github.com/rzane/51c1a462532acfa01296eb75f6830d10.

By using tuples, and declaring functions on my interfaces, I was able to solve this specific problem mentioned in this issue.

The interfaces that I define are a little different from the ones in the README. For example:

interface AuthActions {
  login(user: User): Promise<void>;
}

interface AuthMutations {
  login(user: User): void;
  logout(): void;
}

interface AuthGetters {
  currentUser(): User | null;
}

Another cool thing offered in the gist are the helpers for components. It means that I also get type safety in components.

class MyComponent extends Vue {
  @Getter currentUser!: UseGetter<'currentUser'>;
  @Action login!: UseAction<'login'>;
}

I'd be happy to send a PR based on my gist, if you are interested. I would be a breaking change for this library though.

from vuex-type-helper.

Since this lib was made before conditional types, it is needed to pass undefined explicitly for type safety. I guess we can omit that by defining the lib types with conditional types.

from vuex-type-helper.

Hello.
I faced similar case, and avoided the problem with code like below.

export interface AuthMutations {
  unsetCurrentUser: void;
}
mutations.unsetCurrentUser(state, undefined) // passes
mutations.unsetCurrentUser(state, null) // passes
mutations.unsetCurrentUser(state) // passes too
mutations.unsetCurrentUser(state, 0) // fails but it is expected

(Here is dummy code from yours because I can not publish our real code, sorry)

If you can accept mutations.unsetCurrentUser(state, undefined) // passes, how about this work-around?

from vuex-type-helper.

Sorry!
In a method of action with my work-around, I faced same problem too like below.

(snip)
  someAction({commit}){
    commit("unsetCurrentUser", undefined) // passses
    commit("unsetCurrentUser") // fails...
  }

from vuex-type-helper.