feat: support WebSockets (#3)

Author: kettanaito

.github/workflows/ci.yml

@@ -3,6 +3,7 @@ name: ci
 on:
   push:
     branches:
+      - main
   pull_request:
     branches:
   workflow_dispatch:

README.md

@@ -65,9 +65,3 @@ test('displays the user dashboard', async ({ worker, page }) => {
   await page.goto('/dashboard')
 })
 ```
-
-## Limitations
-
-### WebSocket support
-
-This library _does not support mocking WebSockets_ at the moment. That support requires a refactoring on MSW side to expose `handleWebSocketEvent()` and simplify its call signature (it really only needs the client url). Once that refactoring is done, we will use `page.routeWebSocket()` to provision the WebSocket support.

package.json

@@ -40,14 +40,19 @@
     "node": ">=20.0.0"
   },
   "peerDependencies": {
-    "msw": "^2.9.0"
+    "msw": "^2.10.1"
   },
   "devDependencies": {
+    "@epic-web/test-server": "^0.1.6",
     "@ossjs/release": "^0.8.1",
     "@playwright/test": "^1.52.0",
     "@types/node": "^22.15.29",
-    "msw": "^2.9.0",
+    "msw": "^2.10.1",
     "tsdown": "^0.12.7",
     "typescript": "^5.8.3"
+  },
+  "dependencies": {
+    "@mswjs/interceptors": "^0.39.2",
+    "outvariant": "^1.4.3"
   }
-}
+}