fix: restore parse5 v6 deps and fix ws/koa type resolution

- Restore parse5 to ^6.0.1 in all packages (v8 migration is in PR4)
- Keep koa v3 / ws v8 in dev-server-core (required for nodenext compat)
- Use WebSocketServer from ws v8 API
- Remove nested @types cleanup for ws (not needed)

Assisted-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bennypowers

package-lock.json

@@ -10,7 +10,7 @@
     "node": ">=18.0.0"
   },
   "scripts": {
-    "build": "node scripts/fix-jridgewell-dcts.js && rm -rf packages/dev-server-core/node_modules/@types/koa packages/dev-server-core/node_modules/@types/ws packages/dev-server-core/node_modules/ws && npm run build:clean && tsc --build",
+    "build": "node scripts/fix-jridgewell-dcts.js && rm -rf packages/dev-server-core/node_modules/@types/koa packages/dev-server-core/node_modules/@types/ws && npm run build:clean && tsc --build",
     "build:clean": "rimraf --glob packages/*/tsconfig.tsbuildinfo && rimraf --glob packages/*/dist",
     "build:production": "node scripts/workspaces-scripts-bin.mjs build:production",
     "build:site": "npm run build && rocket build",

package.json

@@ -71,7 +71,7 @@
     "koa-static": "^5.0.0",
     "lru-cache": "^8.0.4",
     "mime-types": "^2.1.27",
-    "parse5": "^7.0.0 || ^8.0.0",
+    "parse5": "^6.0.1",
     "picomatch": "^2.2.2",
     "ws": "^8.18.3"
   },

packages/dev-server-core/package.json

@@ -1,5 +1,5 @@
 import type { Server } from 'net';
-import WebSocket from 'ws';
+import WebSocket, { WebSocketServer } from 'ws';
 import { EventEmitter } from './EventEmitter.ts';
 
 export const NAME_WEB_SOCKET_IMPORT = '/__web-dev-server__web-socket.js';
@@ -17,13 +17,13 @@ export interface Events {
  */
 export class WebSocketsManager extends EventEmitter<Events> {
   public webSocketImport = NAME_WEB_SOCKET_IMPORT;
-  public webSocketServer: WebSocket.Server;
+  public webSocketServer: WebSocketServer;
   private openSockets = new Set<WebSocket>();
 
   constructor(server: Server) {
     super();
 
-    this.webSocketServer = new WebSocket.Server({
+    this.webSocketServer = new WebSocketServer({
       noServer: true,
       path: `/${NAME_WEB_SOCKET_API}`,
     });

packages/dev-server-core/src/web-sockets/WebSocketsManager.ts

@@ -53,7 +53,7 @@
     "@mdn/browser-compat-data": "^4.0.0",
     "@web/dev-server-core": "^0.7.4",
     "esbuild": "^0.25.0",
-    "parse5": "^7.0.0 || ^8.0.0",
+    "parse5": "^6.0.1",
     "ua-parser-js": "^1.0.33"
   },
   "devDependencies": {

packages/dev-server-esbuild/package.json

@@ -52,7 +52,7 @@
     "@import-maps/resolve": "^1.0.1",
     "@web/dev-server-core": "^0.7.2",
     "@web/parse5-utils": "^2.1.0",
-    "parse5": "^7.0.0 || ^8.0.0",
+    "parse5": "^6.0.1",
     "picomatch": "^2.2.2"
   },
   "devDependencies": {

packages/dev-server-import-maps/package.json

@@ -63,7 +63,7 @@
     "browserslist": "^4.16.0",
     "browserslist-useragent": "^4.0.0",
     "caniuse-api": "^3.0.0",
-    "parse5": "^7.0.0 || ^8.0.0",
+    "parse5": "^6.0.1",
     "valid-url": "^1.0.9"
   },
   "devDependencies": {

packages/dev-server-legacy/package.json

@@ -50,7 +50,7 @@
     "@rollup/plugin-node-resolve": "^15.0.1",
     "@web/dev-server-core": "^0.7.2",
     "nanocolors": "^0.2.13",
-    "parse5": "^7.0.0 || ^8.0.0",
+    "parse5": "^6.0.1",
     "rollup": "^4.4.0",
     "whatwg-url": "^14.0.0"
   },

packages/dev-server-rollup/package.json

@@ -40,7 +40,7 @@
     "utils"
   ],
   "dependencies": {
-    "parse5": "^7.0.0 || ^8.0.0"
+    "parse5": "^6.0.1"
   },
   "devDependencies": {
     "@types/html-minifier-terser": "^7.0.0"

packages/parse5-utils/package.json

@@ -56,7 +56,7 @@
     "dynamic-import-polyfill": "^0.1.1",
     "es-module-shims": "^1.4.1",
     "intersection-observer": "^0.12.0",
-    "parse5": "^7.0.0 || ^8.0.0",
+    "parse5": "^6.0.1",
     "regenerator-runtime": "^0.14.0",
     "resize-observer-polyfill": "^1.5.1",
     "shady-css-scoped-element": "^0.0.2",