Add Support for Interface types in SDL-Transformation and generade ad…

.gitignore

@@ -89,4 +89,6 @@ typings/
 # DynamoDB Local files
 .dynamodb/
 
-dist/
+# Intellij IDEA Configuration
+.idea
+*.iml

dist/ast-builders.d.ts

@@ -0,0 +1,6 @@
+import { NameNode, StringValueNode, DirectiveNode, ValueNode } from 'graphql/language';
+export declare function createNameNode(value: string): NameNode;
+export declare function createStringValueNode(value: string, block?: boolean): StringValueNode;
+export declare function createDirectiveNode(name: string, directiveArguments?: {
+    [argumentName: string]: ValueNode;
+}): DirectiveNode;

dist/transform-federation.d.ts

@@ -0,0 +1,20 @@
+import { GraphQLSchema } from 'graphql';
+import { GraphQLReferenceResolver } from '@apollo/federation/dist/types';
+export interface FederationFieldConfig {
+    external?: boolean;
+    provides?: string;
+    requires?: string;
+}
+export interface FederationFieldsConfig {
+    [fieldName: string]: FederationFieldConfig;
+}
+export interface FederationObjectConfig<TContext> {
+    keyFields?: string[];
+    extend?: boolean;
+    resolveReference?: GraphQLReferenceResolver<TContext>;
+    fields?: FederationFieldsConfig;
+}
+export interface FederationConfig<TContext> {
+    [objectName: string]: FederationObjectConfig<TContext>;
+}
+export declare function transformSchemaFederation<TContext>(schema: GraphQLSchema, federationConfig: FederationConfig<TContext>): GraphQLSchema;

dist/transform-federation.spec.d.ts

@@ -0,0 +1 @@
+export {};

dist/transform-sdl.d.ts

@@ -0,0 +1,2 @@
+import { FederationConfig } from './transform-federation';
+export declare function addFederationAnnotations<TContext>(schema: string, federationConfig: FederationConfig<TContext>): string;