feat(core): Added the current schema as an argument for api extensions

packages/core/src/api/config/configure-graphql-module.ts

@@ -155,7 +155,7 @@ async function createGraphQLOptions(
         let schema = buildSchema(typeDefs);
 
         getPluginAPIExtensions(configService.plugins, apiType)
-            .map(e => (typeof e.schema === 'function' ? e.schema() : e.schema))
+            .map(e => (typeof e.schema === 'function' ? e.schema(schema) : e.schema))
             .filter(notNullOrUndefined)
             .forEach(documentNode => (schema = extendSchema(schema, documentNode)));
         schema = generateListOptions(schema);

packages/core/src/plugin/vendure-plugin.ts

@@ -4,7 +4,7 @@ import { ModuleMetadata } from '@nestjs/common/interfaces';
 import { APP_FILTER, APP_GUARD, APP_INTERCEPTOR, APP_PIPE } from '@nestjs/core';
 import { pick } from '@vendure/common/lib/pick';
 import { Type } from '@vendure/common/lib/shared-types';
-import { DocumentNode, GraphQLScalarType } from 'graphql';
+import { DocumentNode, GraphQLScalarType, GraphQLSchema } from 'graphql';
 
 import { RuntimeVendureConfig } from '../config/vendure-config';
 
@@ -84,13 +84,16 @@ export interface APIExtensionDefinition {
      * }`;
      * ```
      */
-    schema?: DocumentNode | (() => DocumentNode | undefined);
+    schema?:
+        | DocumentNode
+        | (() => DocumentNode | undefined)
+        | ((schema: GraphQLSchema) => DocumentNode | undefined);
     /**
      * @description
      * An array of resolvers for the schema extensions. Should be defined as [Nestjs GraphQL resolver](https://docs.nestjs.com/graphql/resolvers-map)
      * classes, i.e. using the Nest `\@Resolver()` decorator etc.
      */
-    resolvers?: Array<Type<any>> | (() => Array<Type<any>>);
+    resolvers?: Array<Type<any>> | (() => Array<Type<any>>) | ((schema: GraphQLSchema) => Array<Type<any>>);
     /**
      * @description
      * A map of GraphQL scalar types which should correspond to any custom scalars defined in your schema.