feat: add __typename to selection set (#575)

BREAKING CHANGE: typename introspection with __typename meta field enabled by default

Author: Dane Pilcher

packages/amplify-codegen/src/commands/statements.js

@@ -5,7 +5,7 @@ const Ora = require('ora');
 const loadConfig = require('../codegen-config');
 const constants = require('../constants');
 const { ensureIntrospectionSchema, getFrontEndHandler, getAppSyncAPIDetails } = require('../utils');
-const { generate } = require('@aws-amplify/graphql-docs-generator')
+const { generate } = require('@aws-amplify/graphql-docs-generator');
 
 async function generateStatements(context, forceDownloadSchema, maxDepth, withoutInit = false, decoupleFrontend = '') {
   try {
@@ -59,6 +59,9 @@ async function generateStatements(context, forceDownloadSchema, maxDepth, withou
         separateFiles: true,
         language,
         maxDepth: maxDepth || cfg.amplifyExtension.maxDepth,
+        // default typenameIntrospection to true when not set
+        typenameIntrospection:
+          cfg.amplifyExtension.typenameIntrospection === undefined ? true : !!cfg.amplifyExtension.typenameIntrospection,
       });
       opsGenSpinner.succeed(constants.INFO_MESSAGE_OPS_GEN_SUCCESS + path.relative(path.resolve('.'), opsGenDirectory));
     } finally {

packages/amplify-codegen/tests/commands/statements.test.js

@@ -71,6 +71,7 @@ describe('command - statements', () => {
     expect(generate).toHaveBeenCalledWith(path.join(MOCK_PROJECT_ROOT, MOCK_SCHEMA), path.join(MOCK_PROJECT_ROOT, MOCK_STATEMENTS_PATH), {
       separateFiles: true,
       language: MOCK_TARGET_LANGUAGE,
+      typenameIntrospection: true,
     });
   });
 
@@ -81,6 +82,7 @@ describe('command - statements', () => {
     expect(generate).toHaveBeenCalledWith(path.join(MOCK_PROJECT_ROOT, MOCK_SCHEMA), path.join(MOCK_PROJECT_ROOT, MOCK_STATEMENTS_PATH), {
       separateFiles: true,
       language: 'graphql',
+      typenameIntrospection: true,
     });
   });
 
@@ -92,7 +94,7 @@ describe('command - statements', () => {
       path.join(MOCK_PROJECT_ROOT, MOCK_SCHEMA),
       MOCK_APIS[0],
       MOCK_REGION,
-      forceDownload
+      forceDownload,
     );
   });
 
@@ -105,7 +107,7 @@ describe('command - statements', () => {
       path.join(MOCK_PROJECT_ROOT, MOCK_SCHEMA),
       MOCK_APIS[0],
       MOCK_REGION,
-      forceDownload
+      forceDownload,
     );
   });