Fix CLI development server

.changeset/orange-zebras-sell.md

@@ -0,0 +1,5 @@
+---
+'@watching/cli': patch
+---
+
+Fix development server

app/package.json

@@ -26,7 +26,7 @@
   "devDependencies": {
     "@lemon/css": "workspace:*",
     "@lemon/zest": "workspace:*",
-    "@lemonmade/graphql-live": "^0.4.1",
+    "@lemonmade/graphql-live": "^0.4.2",
     "@lemonmade/remote-ui": "^0.3.3",
     "@lemonmade/remote-ui-preact": "^0.4.1",
     "@lemonmade/remote-ui-react": "^0.3.1",

packages/cli/package.json

@@ -46,7 +46,7 @@
     "build": "rollup --config configuration/rollup.config.js"
   },
   "dependencies": {
-    "@lemonmade/graphql-live": "^0.4.1",
+    "@lemonmade/graphql-live": "^0.4.2",
     "@quilted/cli-kit": "^0.1.12",
     "@quilted/graphql": "^3.0.1",
     "@quilted/graphql-tools": "^0.2.0",

packages/cli/source/commands/develop/develop.ts

@@ -4,6 +4,8 @@ import * as path from 'path';
 import type {Server} from 'http';
 import {emitKeypressEvents} from 'readline';
 import {stat, readFile} from 'fs/promises';
+import {setMaxListeners} from 'events';
+
 import {
   on,
   EventEmitter,
@@ -75,6 +77,10 @@ export async function develop({ui, proxy}: {ui: Ui; proxy?: string}) {
 
   await ensureRootOutputDirectory(app);
   const devServer = await createDevServer(app, {ui});
+
+  // The development server adds lots of event listeners to abort controllers,
+  // which causes unnecessary warnings in Node.
+  setMaxListeners(Number.POSITIVE_INFINITY);
   const result = await devServer.listen();
 
   const localUrl = new URL(proxy ?? `http://localhost:${result.port}`);
@@ -313,8 +319,9 @@ async function createDevServer(app: LocalApp, {ui}: {ui: Ui}) {
           return new Response(await readFile(assetPath, {encoding: 'utf8'}), {
             headers: {
               'Cache-Control': 'no-store',
-              'Timing-Allow-Origin': '*',
               'Content-Type': mime.getType(assetPath)!,
+              'Timing-Allow-Origin': '*',
+              'Access-Control-Allow-Origin': '*',
             },
           });
         } else {