Have playwright addon tests only start server, not build it

addons/xterm-addon-canvas/package.json

@@ -20,7 +20,7 @@
     "prepackage": "npm run build",
     "package": "../../node_modules/.bin/webpack",
     "prepublishOnly": "npm run package",
-    "start": "node ../../demo/start"
+    "start-server-only": "node ../../demo/start-server-only"
   },
   "peerDependencies": {
     "xterm": "^5.0.0"

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

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

addons/xterm-addon-webgl/package.json

@@ -20,7 +20,7 @@
     "prepackage": "npm run build",
     "package": "../../node_modules/.bin/webpack",
     "prepublishOnly": "npm run package",
-    "start": "node ../../demo/start"
+    "start-server-only": "node ../../demo/start-server-only"
   },
   "peerDependencies": {
     "xterm": "^5.0.0"

addons/xterm-addon-webgl/test/WebglRenderer.test.ts

@@ -23,7 +23,7 @@ test.afterAll(async () => await ctx.page.close());
 test.describe('WebGL Renderer Integration Tests', async () => {
   // HACK: webgl2 is often not supported in headless firefox on Linux
   // https://github.com/microsoft/playwright/issues/11566
-  test.skip(({ browserName, userAgent}) => (userAgent?.includes('Linux') ?? false) && browserName === 'firefox');
+  test.skip(({ browserName, userAgent }) => (userAgent?.includes('Linux') ?? false) && browserName === 'firefox');
 
   injectSharedRendererTests(ctxWrapper);
 });

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

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

demo/start-server-only.js

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+// @ts-check
+
+const startServer = require('./server.js');
+
+startServer();

package.json

@@ -28,6 +28,7 @@
     "package-headless": "webpack --config ./webpack.config.headless.js",
     "postpackage-headless": "node ./bin/package_headless.js",
     "start": "node demo/start",
+    "start-server-only": "node demo/start-server-only",
     "build-demo": "webpack --config ./demo/webpack.config.js",
     "start-debug": "node --inspect-brk demo/start",
     "lint": "eslint -c .eslintrc.json --max-warnings 0 --ext .ts src/ addons/",