Cleanup @graphql-tools/federation (#308)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

.changeset/@graphql-tools_federation-308-dependencies.md

@@ -0,0 +1,9 @@
+---
+'@graphql-tools/federation': patch
+---
+
+dependencies updates: 
+
+- Added dependency [`@graphql-yoga/typed-event-target@^3.0.0` ↗︎](https://www.npmjs.com/package/@graphql-yoga/typed-event-target/v/3.0.0) (to `dependencies`)
+- Added dependency [`@whatwg-node/disposablestack@^0.0.5` ↗︎](https://www.npmjs.com/package/@whatwg-node/disposablestack/v/0.0.5) (to `dependencies`)
+- Added dependency [`@whatwg-node/events@^0.1.2` ↗︎](https://www.npmjs.com/package/@whatwg-node/events/v/0.1.2) (to `dependencies`)

.changeset/fair-glasses-shout.md

@@ -0,0 +1,28 @@
+---
+'@graphql-tools/federation': major
+---
+
+BREAKING CHANGES;
+
+- Removed `buildSubgraphSchema`, use `@apollo/subgraph` instead.
+- Removed the following gateway related functions, and prefer using Supergraph approach instead
+    - `getSubschemaForFederationWithURL`
+    - `getSubschemaForFederationWithTypeDefs`
+    - `getSubschemaForFederationWithExecutor`
+    - `getSubschemaForFederationWithSchema`
+    - `federationSubschemaTransformer`
+- `SupergraphSchemaManager` is no longer an `EventEmitter` but `EventTarget` instead, and it emits a real `Event` object.
+- `SupergraphSchemaManager` is now `Disposable` and it no longer stops based on Nodejs terminate events, so you should use `using` syntax.
+
+```ts
+using manager = new SupergraphSchemaManager({ ... });
+
+manager.addEventListener('error', (event: SupergraphSchemaManagerErrorEvent) => {
+  console.error(event.detail.error);
+});
+
+let schema: GraphQLSchema | null = null;
+manager.addEventListener('schema', (event: SupergraphSchemaManagerSchemaEvent) => {
+    schema = event.detail.schema;
+});
+```

.github/workflows/test.yml

@@ -177,6 +177,10 @@ jobs:
         name: Package binary
         run: yarn workspace @graphql-hive/gateway tsx scripts/package-binary
       - name: Test
+        uses: nick-fields/retry@v3
         env:
           E2E_GATEWAY_RUNNER: ${{matrix.setup.gateway-runner}}
-        run: yarn test:e2e
+        with:
+          timeout_minutes: 10
+          max_attempts: 2
+          command: yarn test:e2e

packages/federation/package.json

@@ -45,6 +45,9 @@
     "@graphql-tools/stitch": "workspace:^",
     "@graphql-tools/utils": "^10.6.2",
     "@graphql-tools/wrap": "workspace:^",
+    "@graphql-yoga/typed-event-target": "^3.0.0",
+    "@whatwg-node/disposablestack": "^0.0.5",
+    "@whatwg-node/events": "^0.1.2",
     "@whatwg-node/fetch": "^0.10.1",
     "tslib": "^2.8.1"
   },

packages/federation/src/index.ts

@@ -1,5 +1,3 @@
-export * from './gateway.js';
 export * from './managed-federation.js';
-export * from './subgraph.js';
 export * from './supergraph.js';
 export * from './utils.js';