chore(rstest): support rsbuild 2.x and align engines with rstest

Widen the @rsbuild/core peer range to ^1.3.21 || ^2.0.0, build and test
against the 2.x line rstest actually uses, and raise engines.node to
rstest's floor (^20.19.0 || >=22.12.0). rspack 2.x dropped
experiments.outputModule from its types, so keep that 1.x-only assignment
behind a cast.

Author: ScriptedAlchemy

.github/workflows/e2e-rstest.yml

@@ -48,6 +48,9 @@ jobs:
       - name: Install Dependencies
         run: pnpm install --frozen-lockfile
 
+      - name: Install Playwright
+        run: pnpm exec playwright install --with-deps chromium
+
       - name: Install Cypress
         run: npx cypress install
 

packages/enhanced/src/schemas/container/ModuleFederationPlugin.check.ts

@@ -444,7 +444,7 @@ const t = {
                         ],
                       },
                       timeout: { type: 'number' },
-                      family: { enum: [4, 6] },
+                      family: { enum: [0, 4, 6] },
                       typesOnBuild: { type: 'boolean' },
                     },
                   },
@@ -4361,6 +4361,8 @@ function D(
                                                                             const n =
                                                                               c;
                                                                             if (
+                                                                              0 !==
+                                                                                e &&
                                                                               4 !==
                                                                                 e &&
                                                                               6 !==

packages/enhanced/src/schemas/container/ModuleFederationPlugin.json

@@ -841,7 +841,7 @@
                       ]
                     },
                     "timeout": { "type": "number" },
-                    "family": { "enum": [4, 6] },
+                    "family": { "enum": [0, 4, 6] },
                     "typesOnBuild": { "type": "boolean" }
                   }
                 }

packages/enhanced/src/schemas/container/ModuleFederationPlugin.ts

@@ -936,7 +936,7 @@ export default {
                       type: 'number',
                     },
                     family: {
-                      enum: [4, 6],
+                      enum: [0, 4, 6],
                     },
                     typesOnBuild: {
                       type: 'boolean',

packages/rstest/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@module-federation/rstest",
   "version": "0.23.0",
-  "description": "Rstest federation compatibility plugin (extracted from @rstest/core).",
+  "description": "Companion Rsbuild plugin for Rstest's Module Federation mode.",
   "homepage": "https://module-federation.io",
   "bugs": {
     "url": "https://github.com/module-federation/core/issues"
@@ -42,10 +42,10 @@
   "devDependencies": {
     "@rslib/core": "^0.12.4",
     "@rstest/core": "^0.8.1",
-    "@rsbuild/core": "^1.3.21"
+    "@rsbuild/core": "^2.0.12"
   },
   "peerDependencies": {
-    "@rsbuild/core": "^1.3.21"
+    "@rsbuild/core": "^1.3.21 || ^2.0.0"
   },
   "peerDependenciesMeta": {
     "@rsbuild/core": {
@@ -58,7 +58,7 @@
     "@module-federation/sdk": "workspace:*"
   },
   "engines": {
-    "node": ">=16.0.0"
+    "node": "^20.19.0 || >=22.12.0"
   },
   "publishConfig": {
     "access": "public",

packages/rstest/src/rspack-hook.ts

@@ -27,7 +27,10 @@ export const applyNodeRspackDefaults = (
   rspackConfig.optimization.splitChunks = false;
 
   rspackConfig.experiments ??= {};
-  rspackConfig.experiments.outputModule = false;
+  // `experiments.outputModule` only exists on rspack/rsbuild 1.x (the peer
+  // range still allows it); there `output.module` alone is not enough when
+  // the experiment is enabled. On 2.x the assignment is a harmless no-op.
+  (rspackConfig.experiments as { outputModule?: boolean }).outputModule = false;
   rspackConfig.output ??= {};
   rspackConfig.output.module = false;
 };