[resolvers] Add avoidCheckingAbstractTypesRecursively option to support nested defaultMappers

.changeset/grumpy-moose-bake.md

@@ -0,0 +1,8 @@
+---
+'@graphql-codegen/visitor-plugin-common': minor
+'@graphql-codegen/typescript-resolvers': minor
+---
+
+Add avoidCheckingAbstractTypesRecursively to avoid checking and generating abstract types recursively
+
+For users that already sets recursive default mappers e.g. `Partial<{T}>` or `DeepPartial<{T}>`, having both options on will cause a nested loop which eventually crashes Codegen. In such case, setting `avoidCheckingAbstractTypesRecursively: true` allows users to continue to use recursive default mappers as before.

packages/plugins/other/visitor-plugin-common/src/base-resolvers-visitor.ts

@@ -81,6 +81,7 @@ export interface ParsedResolversConfig extends ParsedConfig {
   onlyResolveTypeForInterfaces: boolean;
   directiveResolverMappings: Record<string, string>;
   resolversNonOptionalTypename: ResolversNonOptionalTypenameConfig;
+  avoidCheckingAbstractTypesRecursively: boolean;
 }
 
 type FieldDefinitionPrintFn = (parentName: string, avoidResolverOptionals: boolean) => string | null;
@@ -394,6 +395,7 @@ export interface RawResolversConfig extends RawConfig {
    *        plugins: ['typescript', 'typescript-resolver', { add: { content: "import { DeepPartial } from 'utility-types';" } }],
    *        config: {
    *          defaultMapper: 'DeepPartial<{T}>',
+   *          avoidCheckingAbstractTypesRecursively: true // required if you have complex nested abstract types
    *        },
    *      },
    *    },
@@ -644,6 +646,13 @@ export interface RawResolversConfig extends RawConfig {
    * ```
    */
   resolversNonOptionalTypename?: boolean | ResolversNonOptionalTypenameConfig;
+  /**
+   * @type boolean
+   * @default false
+   * @description If true, recursively goes through all object type's fields, checks if they have abstract types and generates expected types correctly.
+   * This may not work for cases where provided default mapper types are also nested e.g. `defaultMapper: DeepPartial<{T}>` or `defaultMapper: Partial<{T}>`.
+   */
+  avoidCheckingAbstractTypesRecursively?: boolean;
   /**
    * @ignore
    */
@@ -726,6 +735,7 @@ export class BaseResolversVisitor<
       resolversNonOptionalTypename: normalizeResolversNonOptionalTypename(
         getConfigValue(rawConfig.resolversNonOptionalTypename, false)
       ),
+      avoidCheckingAbstractTypesRecursively: getConfigValue(rawConfig.avoidCheckingAbstractTypesRecursively, false),
       ...additionalConfig,
     } as TPluginConfig);
 
@@ -1851,7 +1861,7 @@ export class BaseResolversVisitor<
         const isObject = isObjectType(baseType);
         let isObjectWithAbstractType = false;
 
-        if (isObject) {
+        if (isObject && !this.config.avoidCheckingAbstractTypesRecursively) {
           isObjectWithAbstractType = checkIfObjectTypeHasAbstractTypesRecursively(baseType, {
             isObjectWithAbstractType,
             checkedTypesWithNestedAbstractTypes: this._checkedTypesWithNestedAbstractTypes,

packages/plugins/typescript/resolvers/tests/ts-resolvers.interface.spec.ts

@@ -406,4 +406,59 @@ describe('TypeScript Resolvers Plugin - Interfaces', () => {
       };
     `);
   });
+
+  it('does not generate nested types when avoidCheckingAbstractTypesRecursively=true', async () => {
+    const schema = buildSchema(/* GraphQL */ `
+      interface I_Node {
+        id: ID!
+      }
+
+      type T_WithNode {
+        node: I_Node!
+      }
+
+      type T_Type1 {
+        id: ID!
+        type2: T_Type2!
+        withNode: T_WithNode! # abstract type is in T_Type1
+      }
+
+      type T_Type2 {
+        id: ID!
+        type1: T_Type1!
+      }
+    `);
+
+    const result = await plugin(schema, [], { avoidCheckingAbstractTypesRecursively: true }, { outputFile: '' });
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversInterfaceTypes<_RefType extends Record<string, unknown>> = {
+        I_Node: never;
+      };
+    `);
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversTypes = {
+        I_Node: ResolverTypeWrapper<ResolversInterfaceTypes<ResolversTypes>['I_Node']>;
+        ID: ResolverTypeWrapper<Scalars['ID']['output']>;
+        T_WithNode: ResolverTypeWrapper<Omit<T_WithNode, 'node'> & { node: ResolversTypes['I_Node'] }>;
+        T_Type1: ResolverTypeWrapper<T_Type1>;
+        T_Type2: ResolverTypeWrapper<T_Type2>;
+        Boolean: ResolverTypeWrapper<Scalars['Boolean']['output']>;
+        String: ResolverTypeWrapper<Scalars['String']['output']>;
+      };
+    `);
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversParentTypes = {
+        I_Node: ResolversInterfaceTypes<ResolversParentTypes>['I_Node'];
+        ID: Scalars['ID']['output'];
+        T_WithNode: Omit<T_WithNode, 'node'> & { node: ResolversParentTypes['I_Node'] };
+        T_Type1: T_Type1;
+        T_Type2: T_Type2;
+        Boolean: Scalars['Boolean']['output'];
+        String: Scalars['String']['output'];
+      };
+    `);
+  });
 });

packages/plugins/typescript/resolvers/tests/ts-resolvers.union.spec.ts

@@ -94,4 +94,146 @@ describe('TypeScript Resolvers Plugin - Union', () => {
     expect(content.content).not.toBeSimilarStringTo(`export type ResolversUnionTypes`);
     expect(content.content).not.toBeSimilarStringTo(`export type ResolversUnionParentTypes`);
   });
+
+  it('generates nested types when avoidCheckingAbstractTypesRecursively=false (default)', async () => {
+    const schema = buildSchema(/* GraphQL */ `
+      type StandardError {
+        error: String!
+      }
+
+      type User {
+        id: ID!
+        fullName: String!
+        posts: PostsPayload!
+      }
+
+      type UserResult {
+        result: User
+        recommendedPosts: PostsPayload!
+      }
+
+      union UserPayload = UserResult | StandardError
+
+      type Post {
+        author: String
+        comment: String
+      }
+
+      type PostsResult {
+        results: [Post!]!
+      }
+
+      union PostsPayload = PostsResult | StandardError
+    `);
+
+    const result = await plugin(schema, [], {}, { outputFile: '' });
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversUnionTypes<_RefType extends Record<string, unknown>> = {
+        UserPayload: ( Omit<UserResult, 'result' | 'recommendedPosts'> & { result?: Maybe<_RefType['User']>, recommendedPosts: _RefType['PostsPayload'] } ) | ( StandardError );
+        PostsPayload: ( PostsResult ) | ( StandardError );
+      };
+    `);
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversTypes = {
+        StandardError: ResolverTypeWrapper<StandardError>;
+        String: ResolverTypeWrapper<Scalars['String']['output']>;
+        User: ResolverTypeWrapper<Omit<User, 'posts'> & { posts: ResolversTypes['PostsPayload'] }>;
+        ID: ResolverTypeWrapper<Scalars['ID']['output']>;
+        UserResult: ResolverTypeWrapper<Omit<UserResult, 'result' | 'recommendedPosts'> & { result?: Maybe<ResolversTypes['User']>, recommendedPosts: ResolversTypes['PostsPayload'] }>;
+        UserPayload: ResolverTypeWrapper<ResolversUnionTypes<ResolversTypes>['UserPayload']>;
+        Post: ResolverTypeWrapper<Post>;
+        PostsResult: ResolverTypeWrapper<PostsResult>;
+        PostsPayload: ResolverTypeWrapper<ResolversUnionTypes<ResolversTypes>['PostsPayload']>;
+        Boolean: ResolverTypeWrapper<Scalars['Boolean']['output']>;
+      };
+    `);
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversParentTypes = {
+        StandardError: StandardError;
+        String: Scalars['String']['output'];
+        User: Omit<User, 'posts'> & { posts: ResolversParentTypes['PostsPayload'] };
+        ID: Scalars['ID']['output'];
+        UserResult: Omit<UserResult, 'result' | 'recommendedPosts'> & { result?: Maybe<ResolversParentTypes['User']>, recommendedPosts: ResolversParentTypes['PostsPayload'] };
+        UserPayload: ResolversUnionTypes<ResolversParentTypes>['UserPayload'];
+        Post: Post;
+        PostsResult: PostsResult;
+        PostsPayload: ResolversUnionTypes<ResolversParentTypes>['PostsPayload'];
+        Boolean: Scalars['Boolean']['output'];
+      };
+    `);
+  });
+
+  it('does not generate nested types when avoidCheckingAbstractTypesRecursively=true', async () => {
+    const schema = buildSchema(/* GraphQL */ `
+      type StandardError {
+        error: String!
+      }
+
+      type User {
+        id: ID!
+        fullName: String!
+        posts: PostsPayload!
+      }
+
+      type UserResult {
+        result: User
+        recommendedPosts: PostsPayload!
+      }
+
+      union UserPayload = UserResult | StandardError
+
+      type Post {
+        author: String
+        comment: String
+      }
+
+      type PostsResult {
+        results: [Post!]!
+      }
+
+      union PostsPayload = PostsResult | StandardError
+    `);
+
+    const result = await plugin(schema, [], { avoidCheckingAbstractTypesRecursively: true }, { outputFile: '' });
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversUnionTypes<_RefType extends Record<string, unknown>> = {
+        UserPayload: ( Omit<UserResult, 'recommendedPosts'> & { recommendedPosts: _RefType['PostsPayload'] } ) | ( StandardError );
+        PostsPayload: ( PostsResult ) | ( StandardError );
+      };
+    `);
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversTypes = {
+        StandardError: ResolverTypeWrapper<StandardError>;
+        String: ResolverTypeWrapper<Scalars['String']['output']>;
+        User: ResolverTypeWrapper<Omit<User, 'posts'> & { posts: ResolversTypes['PostsPayload'] }>;
+        ID: ResolverTypeWrapper<Scalars['ID']['output']>;
+        UserResult: ResolverTypeWrapper<Omit<UserResult, 'recommendedPosts'> & { recommendedPosts: ResolversTypes['PostsPayload'] }>;
+        UserPayload: ResolverTypeWrapper<ResolversUnionTypes<ResolversTypes>['UserPayload']>;
+        Post: ResolverTypeWrapper<Post>;
+        PostsResult: ResolverTypeWrapper<PostsResult>;
+        PostsPayload: ResolverTypeWrapper<ResolversUnionTypes<ResolversTypes>['PostsPayload']>;
+        Boolean: ResolverTypeWrapper<Scalars['Boolean']['output']>;
+      };
+    `);
+
+    expect(result.content).toBeSimilarStringTo(`
+      export type ResolversParentTypes = {
+        StandardError: StandardError;
+        String: Scalars['String']['output'];
+        User: Omit<User, 'posts'> & { posts: ResolversParentTypes['PostsPayload'] };
+        ID: Scalars['ID']['output'];
+        UserResult: Omit<UserResult, 'recommendedPosts'> & { recommendedPosts: ResolversParentTypes['PostsPayload'] };
+        UserPayload: ResolversUnionTypes<ResolversParentTypes>['UserPayload'];
+        Post: Post;
+        PostsResult: PostsResult;
+        PostsPayload: ResolversUnionTypes<ResolversParentTypes>['PostsPayload'];
+        Boolean: Scalars['Boolean']['output'];
+      };
+    `);
+  });
 });