plugins/graphiql: initial migration to new system

Co-authored-by: Camila Belo <camilaibs@gmail.com>
Co-authored-by: Johan Haals <johan.haals@gmail.com>
Co-authored-by: Philipp Hugenroth <philipph@spotify.com>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

.changeset/clean-houses-invent.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-graphiql': patch
+---
+
+Added experimental exports for the new frontend system under `/alpha`.

plugins/graphiql/package.json

@@ -3,9 +3,7 @@
   "description": "Backstage plugin for browsing GraphQL APIs",
   "version": "0.2.54-next.2",
   "publishConfig": {
-    "access": "public",
-    "main": "dist/index.esm.js",
-    "types": "dist/index.d.ts"
+    "access": "public"
   },
   "backstage": {
     "role": "frontend-plugin"
@@ -19,6 +17,21 @@
   "keywords": [
     "backstage"
   ],
+  "exports": {
+    ".": "./src/index.ts",
+    "./alpha": "./src/alpha.tsx",
+    "./package.json": "./package.json"
+  },
+  "typesVersions": {
+    "*": {
+      "alpha": [
+        "src/alpha.tsx"
+      ],
+      "package.json": [
+        "package.json"
+      ]
+    }
+  },
   "license": "Apache-2.0",
   "main": "src/index.ts",
   "types": "src/index.ts",
@@ -34,6 +47,7 @@
   "dependencies": {
     "@backstage/core-components": "workspace:^",
     "@backstage/core-plugin-api": "workspace:^",
+    "@backstage/frontend-plugin-api": "workspace:^",
     "@backstage/theme": "workspace:^",
     "@material-ui/core": "^4.12.2",
     "@material-ui/icons": "^4.9.1",

plugins/graphiql/src/alpha.tsx

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import React from 'react';
+import {
+  createPageExtension,
+  createPlugin,
+} from '@backstage/frontend-plugin-api';
+
+/**
+ * @alpha
+ */
+export const GraphiqlPage = createPageExtension({
+  id: 'graphiql.page',
+  defaultPath: '/graphiql',
+  component: () => import('./components').then(m => <m.GraphiQLPage />),
+});
+
+/**
+ * @alpha
+ */
+export const graphiqlPlugin = createPlugin({
+  id: 'graphiql',
+  extensions: [GraphiqlPage],
+});

yarn.lock

@@ -7200,6 +7200,7 @@ __metadata:
     "@backstage/core-components": "workspace:^"
     "@backstage/core-plugin-api": "workspace:^"
     "@backstage/dev-utils": "workspace:^"
+    "@backstage/frontend-plugin-api": "workspace:^"
     "@backstage/test-utils": "workspace:^"
     "@backstage/theme": "workspace:^"
     "@material-ui/core": ^4.12.2