feat: transformer redesign

Author: yuth

.eslintrc.js

@@ -261,6 +261,7 @@ module.exports = {
     '/packages/graphql-transformer-*/lib',
     '/packages/amplify-headless-interface/lib',
     '/packages/amplify-util-headless-input/lib',
+    'packages/amplify-graphql-*transformer*/lib',
     '/packages/amplify-provider-awscloudformation/lib',
 
     // Ignore CHANGELOG.md files

.gitignore

@@ -15,6 +15,7 @@ packages/amplify-dynamodb-simulator/__test__/dynamodb-data
 !.vscode/settings.json
 !.vscode/extensions.json
 packages/graphql*/lib
+packages/amplify-graphql-transformer-*/lib
 packages/amplify-cli/lib
 packages/amplify-cli-core/lib
 packages/amplify-mqtt-server/lib

jest.config.js

@@ -14,6 +14,7 @@ module.exports = {
     'packages/graphql-transformers-e2e-tests/',
     'packages/amplify-util-mock/src/__e2e__/',
     'packages/amplify-ui-tests/',
+    'packages/amplify-graphql-transformer-interfaces/',
   ],
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'core', 'node'],
   collectCoverage: true,

packages/amplify-cli-core/src/feature-flags/featureFlags.ts

@@ -479,14 +479,14 @@ export class FeatureFlags {
   // DEVS: Register feature flags here
   private registerFlags = (): void => {
     // Examples:
-    // this.registerFlag('graphQLTransformer', [
-    //   {
-    //     name: 'transformerVersion',
-    //     type: 'number',
-    //     defaultValueForExistingProjects: 4,
-    //     defaultValueForNewProjects: 5,
-    //   },
-    // ]);
+    this.registerFlag('graphQLTransformer', [
+      {
+        name: 'useExperimentalPipelinedTransformer',
+        type: 'boolean',
+        defaultValueForExistingProjects: false,
+        defaultValueForNewProjects: false,
+      },
+    ]);
     // this.registerFlag('keyTransformer', [
     //   {
     //     name: 'defaultQuery',