feat: add separate vitest configuration files for platform and stdlib environments

core/platform/vitest.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'jsdom',
+  },
+});
+

core/stdlib/vitest.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'node',
+  },
+});

vitest.config.ts

@@ -3,16 +3,10 @@ import { defineConfig } from 'vitest/config';
 export default defineConfig({
   test: {
     projects: [
-      {
-        extends: true,
-        test: {
-          typecheck: {
-            enabled: false,
-          },
-        },
-      },
+      'core/stdlib/vitest.config.ts',
+      'core/platform/vitest.config.ts',
+      'web/vue/vitest.config.ts',
     ],
-    environment: 'jsdom',
     coverage: {
       provider: 'v8',
       include: ['core/*', 'web/*'],