fix(deps) Upgrade apollo federation with subgraph

lib/federation/graphql-federation.factory.ts

@@ -92,20 +92,25 @@ export class GraphQLFederationFactory {
   private async generateSchema(
     options: GqlModuleOptions,
   ): Promise<GraphQLSchema> {
-    const {
-      buildFederatedSchema,
-      printSchema,
-    } = loadPackage('@apollo/federation', 'ApolloFederation', () =>
-      require('@apollo/federation'),
+    const { buildFederatedSchema } = loadPackage(
+      '@apollo/federation',
+      'ApolloFederation',
+      () => require('@apollo/federation'),
     );
-
-    const autoGeneratedSchema: GraphQLSchema = await this.gqlSchemaBuilder.buildFederatedSchema(
-      options.autoSchemaFile,
-      options,
-      this.resolversExplorerService.getAllCtors(),
+    const { printSubgraphSchema } = loadPackage(
+      '@apollo/subgraph',
+      'ApolloFederation',
+      () => require('@apollo/subgraph'),
     );
+
+    const autoGeneratedSchema: GraphQLSchema =
+      await this.gqlSchemaBuilder.buildFederatedSchema(
+        options.autoSchemaFile,
+        options,
+        this.resolversExplorerService.getAllCtors(),
+      );
     let executableSchema: GraphQLSchema = buildFederatedSchema({
-      typeDefs: gql(printSchema(autoGeneratedSchema)),
+      typeDefs: gql(printSubgraphSchema(autoGeneratedSchema)),
       resolvers: this.getResolvers(options.resolvers),
     });
 

lib/federation/graphql-federation.module.ts

@@ -142,10 +142,10 @@ export class GraphQLFederationModule implements OnModuleInit, OnModuleDestroy {
     if (!this.httpAdapterHost || !this.httpAdapterHost.httpAdapter) {
       return;
     }
-    const { printSchema } = loadPackage(
-      '@apollo/federation',
+    const { printSubgraphSchema } = loadPackage(
+      '@apollo/subgraph',
       'ApolloFederation',
-      () => require('@apollo/federation'),
+      () => require('@apollo/subgraph'),
     );
 
     const { typePaths } = this.options;
@@ -161,7 +161,7 @@ export class GraphQLFederationModule implements OnModuleInit, OnModuleDestroy {
 
     if (this.options.definitions && this.options.definitions.path) {
       await this.graphqlFactory.generateDefinitions(
-        printSchema(apolloOptions.schema),
+        printSubgraphSchema(apolloOptions.schema),
         this.options,
       );
     }

lib/graphql-definitions.factory.ts

@@ -116,11 +116,16 @@ export class GraphQLDefinitionsFactory {
     const typePathDefs = await this.gqlTypesLoader.mergeTypesByPaths(typePaths);
     const mergedTypeDefs = extend(typePathDefs, typeDefs);
 
-    const {
-      buildFederatedSchema,
-      printSchema,
-    } = loadPackage('@apollo/federation', 'ApolloFederation', () =>
-      require('@apollo/federation'),
+    const { buildFederatedSchema } = loadPackage(
+      '@apollo/federation',
+      'ApolloFederation',
+      () => require('@apollo/federation'),
+    );
+
+    const { printSubgraphSchema } = loadPackage(
+      '@apollo/subgraph',
+      'ApolloFederation',
+      () => require('@apollo/subgraph'),
     );
 
     const schema = buildFederatedSchema([
@@ -133,7 +138,7 @@ export class GraphQLDefinitionsFactory {
     ]);
     const tsFile = await this.gqlAstExplorer.explore(
       gql`
-        ${printSchema(schema)}
+        ${printSubgraphSchema(schema)}
       `,
       path,
       outputAs,

lib/graphql-schema.builder.ts

@@ -116,9 +116,9 @@ export class GraphQLSchemaBuilder {
 
   private loadFederationDirectives() {
     const { federationDirectives } = loadPackage(
-      '@apollo/federation/dist/directives',
+      '@apollo/subgraph/dist/directives',
       'SchemaBuilder',
-      () => require('@apollo/federation/dist/directives'),
+      () => require('@apollo/subgraph/dist/directives'),
     );
     return federationDirectives;
   }

lib/utils/transform-schema.util.ts

@@ -2,7 +2,7 @@
 // The changed lines are 31-40 and 85-87 and the original file can be found here:
 // https://github.com/apollographql/apollo-tooling/blob/master/packages/apollo-graphql/src/schema/transformSchema.ts
 
-import { GraphQLReferenceResolver } from '@apollo/federation/dist/types';
+import '@apollo/subgraph/dist/schemaExtensions';
 import {
   GraphQLFieldConfigArgumentMap,
   GraphQLFieldConfigMap,
@@ -27,17 +27,6 @@ import {
   isUnionType,
 } from 'graphql';
 
-// Definitions taken from here: https://github.com/apollographql/apollo-server/blob/main/packages/apollo-federation/src/types.ts#L62
-declare module 'graphql/type/definition' {
-  interface GraphQLObjectType {
-    resolveReference?: GraphQLReferenceResolver<any>;
-  }
-
-  interface GraphQLObjectTypeConfig<TSource, TContext> {
-    resolveReference?: GraphQLReferenceResolver<TContext>;
-  }
-}
-
 type TypeTransformer = (
   type: GraphQLNamedType,
 ) => GraphQLNamedType | null | undefined;

package.json

@@ -19,8 +19,9 @@
     "release": "release-it"
   },
   "devDependencies": {
-    "@apollo/federation": "0.33.0",
+    "@apollo/federation": "^0.33.3",
     "@apollo/gateway": "0.42.0",
+    "@apollo/subgraph": "^0.1.2",
     "@commitlint/cli": "13.2.1",
     "@commitlint/config-angular": "13.2.0",
     "@nestjs/common": "8.1.1",
@@ -80,8 +81,9 @@
     "ws": "8.2.2"
   },
   "peerDependencies": {
-    "@apollo/federation": "^0.26.0 || ^0.27.0 || ^0.29.0 || 0.33.0",
+    "@apollo/federation": "^0.26.0 || ^0.27.0 || ^0.29.0 || ^0.33.0",
     "@apollo/gateway": "^0.29.0 || ^0.32.0 || ^0.33.0 || ^0.35.0 || ^0.38.0 || ^0.42.0",
+    "@apollo/subgraph": "^0.1.2",
     "@nestjs/common": "^8.0.0",
     "@nestjs/core": "^8.0.0",
     "apollo-server-core": "^3.0.0",
@@ -98,6 +100,9 @@
     "@apollo/gateway": {
       "optional": true
     },
+    "@apollo/subgraph": {
+      "optional": true
+    },
     "apollo-server-core": {
       "optional": true
     },