Move ApolloServerPluginLandingPageGraphQLPlayground to new package

GraphQL Playground was unmaintained when we released Apollo Server 3,
and the Apollo Server team has had to put significant work into fixing
security issues in GraphQL Playground. While we will still publish a
landing page plugin to enable folks upgrading from AS2 to not have to
immediately retrain their users on how to use Apollo Sandbox or another
interface, we remove it from the main `@apollo/server` package and move
it to its own `@apollo/server-plugin-landing-page-graphql-playground`
package. This lets us remove the Playground HTML package's dependencies
(like `xss`) from Apollo Server's main package.

Fixes #6109.

.changeset/ninety-panthers-accept.md

@@ -0,0 +1,7 @@
+---
+"@apollo/server-plugin-landing-page-graphql-playground": major
+"@apollo/server-integration-testsuite": patch
+"@apollo/server": patch
+---
+
+Move ApolloServerPluginGraphQLPlayground into its own package.

docs/source/migration.mdx

@@ -300,7 +300,9 @@ In Apollo Server 3, the `apollo-server-core` package exports built-in plugins, l
 
 In Apollo Server 4, these built-in plugins are part of the main `@apollo/server` package, which also imports the `ApolloServer` class. The  `@apollo/server` package exports these built-in plugins with deep exports. This means you use deep imports for each built-in plugin, enabling you to evaluate only the plugin you use in your app and making it easier for bundlers to eliminate unused code.
 
- The  `@apollo/server` package exports the following plugins:
+There's one exception: the plugin `ApolloServerPluginLandingPageGraphQLPlayground` has been moved to its own package `@apollo/server-plugin-landing-page-graphql-playground` which must be installed separately. (This plugin installs the [unmaintained](https://github.com/graphql/graphql-playground/issues/1143) project GraphQL Playground as a landing page, and is provided for compatibility with Apollo Server 2. We encourage you to switch to the [default landing page](/apollo-server/v3/api/plugin/landing-pages), which installs the similar but the actively maintained Apollo Sandbox instead.)
+
+ Apollo Server exports the following plugins:
 
 | Plugin | Import path |
 |--------|-------------|
@@ -310,7 +312,7 @@ In Apollo Server 4, these built-in plugins are part of the main `@apollo/server`
 | `ApolloServerPluginInlineTrace` | `@apollo/server/plugin/inlineTrace` |
 | `ApolloServerPluginInlineTraceDisabled` | `@apollo/server/plugin/disabled` |
 | `ApolloServerPluginLandingPageDisabled` | `@apollo/server/plugin/disabled` |
-| `ApolloServerPluginLandingPageGraphQLPlayground` | `@apollo/server/plugin/landingPage/graphqlPlayground` |
+| `ApolloServerPluginLandingPageGraphQLPlayground` | `@apollo/server-plugin-landing-page-graphql-playground` |
 | `ApolloServerPluginLandingPageLocalDefault` | `@apollo/server/plugin/landingPage/default` |
 | `ApolloServerPluginLandingPageProductionDefault` | `@apollo/server/plugin/landingPage/default` |
 | `ApolloServerPluginSchemaReporting` | `@apollo/server/plugin/schemaReporting` |

packages/integration-testsuite/package.json

@@ -29,6 +29,7 @@
   "dependencies": {
     "@apollo/cache-control-types": "^1.0.2",
     "@apollo/client": "^3.6.9",
+    "@apollo/server-plugin-landing-page-graphql-playground": "3.0.0",
     "@apollo/utils.keyvaluecache": "^1.0.1",
     "@apollo/utils.createhash": "^1.1.0",
     "@apollo/usage-reporting-protobuf": "^4.0.0-alpha.1",

packages/integration-testsuite/src/apolloServerTests.ts

@@ -57,7 +57,7 @@ import {
   ApolloServerPluginUsageReportingDisabled,
 } from '@apollo/server/plugin/disabled';
 import { ApolloServerPluginLandingPageLocalDefault } from '@apollo/server/plugin/landingPage/default';
-import { ApolloServerPluginLandingPageGraphQLPlayground } from '@apollo/server/plugin/landingPage/graphqlPlayground';
+import { ApolloServerPluginLandingPageGraphQLPlayground } from '@apollo/server-plugin-landing-page-graphql-playground';
 import {
   jest,
   describe,

packages/integration-testsuite/tsconfig.json

@@ -9,6 +9,7 @@
   },
   "include": ["src/**/*"],
   "references": [
+    { "path": "../plugin-landing-page-graphql-playground" },
     { "path": "../server" },
   ],
 }

packages/plugin-landing-page-graphql-playground/README.md

@@ -0,0 +1,21 @@
+# GraphQL Playground plugin
+
+This is a plugin for Apollo Server 4 that makes your GraphQL server serve the [GraphQL Playground IDE](https://github.com/graphql/graphql-playground) as a landing page.
+
+GraphQL Playground was the only landing page available for Apollo Server 2. The GraphQL Playground project is officially [retired](https://github.com/graphql/graphql-playground/issues/1143) and we do not recommend its continued use. We recommend Apollo Server 4's default landing page, which serves the similar but actively maintained [Apollo Sandbox](https://www.apollographql.com/docs/studio/explorer/sandbox/), or a custom landing page.
+
+To help developers migrating from Apollo Server 2, we do still provide a landing page plugin that allows you to use GraphQL Playground with Apollo Server. In Apollo Server 3, that plugin is distributed as part of the `apollo-server-core` package. In Apollo Server 4, that plugin is distributed separately in this package.
+
+To use GraphQL Playground with Apollo Server 4, first `npm install @apollo/server-plugin-landing-page-graphql-playground`, and then:
+
+```ts
+import { ApolloServer } from '@apollo/server';
+import { ApolloServerPluginLandingPageGraphQLPlayground } from '@apollo/server-plugin-landing-page-graphql-playground';
+
+const server = new ApolloServer({
+  plugins: [ApolloServerPluginLandingPageGraphQLPlayground()],
+  // ... other options ...
+});
+```
+
+Note that this will serve GraphQL Playground unconditionally. If you would prefer to only serve it when not in production, you can use `process.env.NODE_ENV` to determine whether to include the plugin in the `plugins` option yourself.

packages/plugin-landing-page-graphql-playground/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "@apollo/server-plugin-landing-page-graphql-playground",
+  "version": "3.0.0",
+  "description": "Apollo Server landing page plugin for GraphQL Playground",
+  "type": "module",
+  "main": "dist/cjs/index.js",
+  "module": "dist/esm/index.js",
+  "types": "dist/esm/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/esm/index.d.ts",
+      "import": "./dist/esm/index.js",
+      "require": "./dist/cjs/index.js"
+    }
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/apollographql/apollo-server",
+    "directory": "packages/plugin-landing-page-graphql-playground"
+  },
+  "keywords": [],
+  "author": "Apollo <packages@apollographql.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/apollographql/apollo-server/issues"
+  },
+  "homepage": "https://github.com/apollographql/apollo-server#readme",
+  "engines": {
+    "node": ">=14.0"
+  },
+  "dependencies": {
+    "@apollographql/graphql-playground-html": "1.6.29"
+  },
+  "peerDependencies": {
+    "@apollo/server": "^4.0.0-alpha.6"
+  }
+}

packages/server/src/plugin/landingPage/graphqlPlayground/index.ts → packages/plugin-landing-page-graphql-playground/src/index.ts

@@ -5,10 +5,7 @@
 // specifying `version` when installing the plugin.
 
 import { renderPlaygroundPage } from '@apollographql/graphql-playground-html';
-import type {
-  ApolloServerPlugin,
-  GraphQLServerListener,
-} from '../../../externalTypes';
+import type { ApolloServerPlugin, GraphQLServerListener } from '@apollo/server';
 
 // This specifies the React version of our fork of GraphQL Playground,
 // `@apollographql/graphql-playground-react`.  It is related to, but not to

packages/plugin-landing-page-graphql-playground/tsconfig.cjs.json

@@ -0,0 +1,11 @@
+{
+  "extends": ".",
+  "compilerOptions": {
+    "module": "commonjs",
+    "outDir": "./dist/cjs",
+    // We delete the CJS .d.ts files in postcompile so we don't need to
+    // ever make their maps. (We can't disable creating the files because
+    // this is a composite project.)
+    "declarationMap": false,
+  },
+}

packages/plugin-landing-page-graphql-playground/tsconfig.json

@@ -0,0 +1,14 @@
+{
+  "extends": "../../tsconfig.base",
+  "compilerOptions": {
+    "rootDir": "./src",
+    "outDir": "./dist/esm"
+  },
+  "include": ["src/**/*"],
+  "exclude": ["**/__tests__"],
+  "references": [
+    {
+      "path": "../server"
+    }
+  ]
+}

packages/server/package.json

@@ -52,11 +52,6 @@
       "import": "./dist/esm/plugin/landingPage/default/index.js",
       "require": "./dist/cjs/plugin/landingPage/default/index.js"
     },
-    "./plugin/landingPage/graphqlPlayground": {
-      "types": "./dist/esm/plugin/landingPage/graphqlPlayground/index.d.ts",
-      "import": "./dist/esm/plugin/landingPage/graphqlPlayground/index.js",
-      "require": "./dist/cjs/plugin/landingPage/graphqlPlayground/index.js"
-    },
     "./plugin/schemaReporting": {
       "types": "./dist/esm/plugin/schemaReporting/index.d.ts",
       "import": "./dist/esm/plugin/schemaReporting/index.js",
@@ -99,7 +94,6 @@
     "@apollo/utils.logger": "^1.0.0",
     "@apollo/utils.usagereporting": "^1.0.0",
     "@apollo/utils.withrequired": "^1.0.0",
-    "@apollographql/graphql-playground-html": "1.6.29",
     "@graphql-tools/schema": "^9.0.0",
     "@josephg/resolvable": "^1.0.0",
     "@types/express-serve-static-core": "4.17.30",

scripts/postcompile.mjs

@@ -12,7 +12,11 @@ import { writeFileSync } from 'fs';
 import rimraf from 'rimraf';
 
 // Tell Node what kinds of files the ".js" files in these subdirectories are.
-for (const dir of ['plugin-response-cache', 'server']) {
+for (const dir of [
+  'plugin-response-cache',
+  'plugin-landing-page-graphql-playground',
+  'server',
+]) {
   writeFileSync(
     path.join('packages', dir, 'dist', 'esm', 'package.json'),
     JSON.stringify({ type: 'module' }),

smoke-test/smoke-test.cjs

@@ -10,7 +10,6 @@ async function validateAllImports() {
   require('@apollo/server/plugin/drainHttpServer');
   require('@apollo/server/plugin/inlineTrace');
   require('@apollo/server/plugin/landingPage/default');
-  require('@apollo/server/plugin/landingPage/graphqlPlayground');
   require('@apollo/server/plugin/schemaReporting');
   require('@apollo/server/plugin/usageReporting');
   require('@apollo/server/standalone');

smoke-test/smoke-test.cts

@@ -10,7 +10,6 @@ async function validateAllImports() {
   await import('@apollo/server/plugin/drainHttpServer');
   await import('@apollo/server/plugin/inlineTrace');
   await import('@apollo/server/plugin/landingPage/default');
-  await import('@apollo/server/plugin/landingPage/graphqlPlayground');
   await import('@apollo/server/plugin/schemaReporting');
   await import('@apollo/server/plugin/usageReporting');
   await import('@apollo/server/standalone');

smoke-test/smoke-test.mjs

@@ -10,7 +10,6 @@ await import('@apollo/server/plugin/disabled');
 await import('@apollo/server/plugin/drainHttpServer');
 await import('@apollo/server/plugin/inlineTrace');
 await import('@apollo/server/plugin/landingPage/default');
-await import('@apollo/server/plugin/landingPage/graphqlPlayground');
 await import('@apollo/server/plugin/schemaReporting');
 await import('@apollo/server/plugin/usageReporting');
 await import('@apollo/server/standalone');

smoke-test/smoke-test.mts

@@ -10,7 +10,6 @@ async function validateAllImports() {
   await import('@apollo/server/plugin/drainHttpServer');
   await import('@apollo/server/plugin/inlineTrace');
   await import('@apollo/server/plugin/landingPage/default');
-  await import('@apollo/server/plugin/landingPage/graphqlPlayground');
   await import('@apollo/server/plugin/schemaReporting');
   await import('@apollo/server/plugin/usageReporting');
   await import('@apollo/server/standalone');

tsconfig.build.json

@@ -6,6 +6,8 @@
   "include": [],
   "references": [
     { "path": "./packages/integration-testsuite/" },
+    { "path": "./packages/plugin-landing-page-graphql-playground" },
+    { "path": "./packages/plugin-landing-page-graphql-playground/tsconfig.cjs.json" },
     { "path": "./packages/plugin-response-cache" },
     { "path": "./packages/plugin-response-cache/tsconfig.cjs.json" },
     { "path": "./packages/server" },