fix: constraint generic types (#326)

Author: mickaelchanrion

packages/typed-vuex/src/types/getters.ts

@@ -1,11 +1,14 @@
 import { GetterTree } from 'vuex'
 import { StateType } from './state'
 
-export type GettersTransformer<T extends Record<string, any>> = Readonly<
-  { [P in keyof T]: ReturnType<T[P]> }
->
+export type GettersTransformer<T extends Record<string, any>> = Readonly<{
+  [P in keyof T]: ReturnType<T[P]>
+}>
 
-export const getterTree = <S, T extends GetterTree<StateType<S>, any>>(
+export const getterTree = <
+  S extends Record<string, any>,
+  T extends GetterTree<StateType<S>, any>
+>(
   _state: S,
   tree: T
 ) => tree

packages/typed-vuex/src/types/mutations.ts

@@ -19,7 +19,10 @@ export interface Commit<T extends Record<string, () => any>> {
   ): ReturnType<T[P]>
 }
 
-export const mutationTree = <S, T extends MutationTree<StateType<S>>>(
+export const mutationTree = <
+  S extends Record<string, any>,
+  T extends MutationTree<StateType<S>>
+>(
   _state: S,
   tree: T
 ) => tree