feat: Added helping generic types for hooks

packages/hooks/src/index.ts

@@ -5,10 +5,10 @@ export {
   resetApolloContext
 } from '@apollo/react-common';
 
-export { useQuery } from './useQuery';
-export { useLazyQuery } from './useLazyQuery';
-export { useMutation } from './useMutation';
-export { useSubscription } from './useSubscription';
+export * from './useQuery';
+export * from './useLazyQuery';
+export * from './useMutation';
+export * from './useSubscription';
 export { useApolloClient } from './useApolloClient';
 
 export { RenderPromises } from './ssr/RenderPromises';

packages/hooks/src/useLazyQuery.ts

@@ -4,6 +4,11 @@ import { DocumentNode } from 'graphql';
 import { LazyQueryHookOptions, QueryTuple } from './types';
 import { useBaseQuery } from './utils/useBaseQuery';
 
+export type UseLazyQuery<TData = any, TVariables = OperationVariables> = (
+  query: DocumentNode,
+  options?: LazyQueryHookOptions<TData, TVariables>
+) => QueryTuple<TData, TVariables>;
+
 export function useLazyQuery<TData = any, TVariables = OperationVariables>(
   query: DocumentNode,
   options?: LazyQueryHookOptions<TData, TVariables>

packages/hooks/src/useMutation.ts

@@ -5,6 +5,11 @@ import { DocumentNode } from 'graphql';
 import { MutationHookOptions, MutationTuple } from './types';
 import { MutationData } from './data/MutationData';
 
+export type UseMutation<TData = any, TVariables = OperationVariables> = (
+  query: DocumentNode,
+  options?: MutationHookOptions<TData, TVariables>
+) => MutationTuple<TData, TVariables>;
+
 export function useMutation<TData = any, TVariables = OperationVariables>(
   mutation: DocumentNode,
   options?: MutationHookOptions<TData, TVariables>

packages/hooks/src/useQuery.ts

@@ -4,6 +4,11 @@ import { DocumentNode } from 'graphql';
 import { QueryHookOptions } from './types';
 import { useBaseQuery } from './utils/useBaseQuery';
 
+export type UseQuery<TData = any, TVariables = OperationVariables> = (
+  query: DocumentNode,
+  options?: QueryHookOptions<TData, TVariables>
+) => QueryResult<TData, TVariables>;
+
 export function useQuery<TData = any, TVariables = OperationVariables>(
   query: DocumentNode,
   options?: QueryHookOptions<TData, TVariables>

packages/hooks/src/useSubscription.ts

@@ -1,10 +1,21 @@
 import { useContext, useState, useRef, useEffect } from 'react';
 import { DocumentNode } from 'graphql';
+import { ApolloError } from 'apollo-client';
 import { getApolloContext, OperationVariables } from '@apollo/react-common';
 
 import { SubscriptionHookOptions } from './types';
 import { SubscriptionData } from './data/SubscriptionData';
 
+export type UseSubscription<TData = any, TVariables = OperationVariables> = (
+  query: DocumentNode,
+  options?: SubscriptionHookOptions<TData, TVariables>
+) => {
+  variables: TVariables;
+  loading: boolean;
+  data?: TData;
+  error?: ApolloError;
+};
+
 export function useSubscription<TData = any, TVariables = OperationVariables>(
   subscription: DocumentNode,
   options?: SubscriptionHookOptions<TData, TVariables>