test: add test for ViteTypeOptions

Author: sapphi-red

packages/vite/src/node/__tests_dts__/typeOptions.ts

@@ -0,0 +1,21 @@
+// This file tests `ViteTypeOptions` in `packages/vite/types/importMeta.d.ts`
+import type { ExpectFalse, ExpectTrue } from '@type-challenges/utils'
+
+// eslint-disable-next-line @typescript-eslint/no-empty-object-type
+interface TypeOptions1 {}
+interface TypeOptions2 {
+  strictImportMetaEnv: unknown
+}
+interface TypeOptions3 {
+  unknownKey: unknown
+}
+
+type IsEnabled<Opts, Key extends string> = Key extends keyof Opts ? true : false
+
+export type cases = [
+  ExpectFalse<IsEnabled<TypeOptions1, 'strictImportMetaEnv'>>,
+  ExpectTrue<IsEnabled<TypeOptions2, 'strictImportMetaEnv'>>,
+  ExpectFalse<IsEnabled<TypeOptions3, 'strictImportMetaEnv'>>,
+]
+
+export {}