Replace 'any' with 'mixed' in return types of various resolvers (#345)

Author: IvanGoncharov

src/mutation/mutation.d.ts

@@ -12,7 +12,7 @@ export type MutationFn = (
   object: any,
   ctx: any,
   info: GraphQLResolveInfo,
-) => Promise<any> | any;
+) => unknown;
 
 // TS_SPECIFIC: This type is only exported by TypeScript
 /**

src/mutation/mutation.js

@@ -13,11 +13,9 @@ import type {
   Thunk,
 } from 'graphql';
 
-type MutationFn = (
-  object: any,
-  ctx: any,
-  info: GraphQLResolveInfo,
-) => Promise<any> | any;
+import isPromise from 'graphql/jsutils/isPromise';
+
+type MutationFn = (object: any, ctx: any, info: GraphQLResolveInfo) => mixed;
 
 function resolveMaybeThunk<T>(thingOrThunk: Thunk<T>): T {
   return typeof thingOrThunk === 'function'
@@ -100,7 +98,3 @@ export function mutationWithClientMutationId(
     },
   };
 }
-
-function isPromise(value: any): boolean {
-  return typeof value?.then === 'function';
-}

src/node/plural.d.ts

@@ -14,7 +14,7 @@ export interface PluralIdentifyingRootFieldConfig {
     input: any,
     context: any,
     info: GraphQLResolveInfo,
-  ) => any;
+  ) => unknown;
   description?: string;
 }
 

src/node/plural.js

@@ -15,7 +15,7 @@ type PluralIdentifyingRootFieldConfig = {|
     input: any,
     context: any,
     info: GraphQLResolveInfo,
-  ) => ?any,
+  ) => mixed,
   description?: string,
 |};