Add npm start to webgl package.json

addons/xterm-addon-webgl/package.json

@@ -19,7 +19,8 @@
     "build": "../../node_modules/.bin/tsc -p .",
     "prepackage": "npm run build",
     "package": "../../node_modules/.bin/webpack",
-    "prepublishOnly": "npm run package"
+    "prepublishOnly": "npm run package",
+    "start": "node ../../demo/start"
   },
   "peerDependencies": {
     "xterm": "^5.0.0"

addons/xterm-addon-webgl/test/playwright.config.ts

@@ -26,7 +26,7 @@ const config: PlaywrightTestConfig = {
   ],
   reporter: 'list',
   webServer: {
-    command: 'npm --cwd ../../.. start',
+    command: 'npm start',
     port: 3000,
     timeout: 120000,
     reuseExistingServer: !process.env.CI