test: type-check tests and docs

- split __tests__/tsconfig.json into per-suite projects so unit tests
  check against src (via path aliases) while e2e/init check against the
  built package, avoiding mixing both type universes in one program
- explicitly include the .vitepress dir in the e2e project - dotted
  directories are skipped by default, so it was never type-checked
- add a `*.vue` shim for the e2e custom theme (named env.d.ts because a
  shims.d.ts would be dropped in favor of the adjacent shims.ts)
- add a tsconfig for docs, checked with vue-tsc
- wire everything into `pnpm test` as `test:types`

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

__tests__/e2e/env.d.ts

@@ -0,0 +1,5 @@
+declare module '*.vue' {
+  import type { DefineComponent } from 'vue'
+  const component: DefineComponent
+  export default component
+}

__tests__/e2e/tsconfig.json

@@ -0,0 +1,4 @@
+{
+  "extends": "../tsconfig.json",
+  "include": ["**/*", ".vitepress/**/*"]
+}

__tests__/init/tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "../tsconfig.json"
+}

__tests__/tsconfig.json

@@ -1,12 +1,8 @@
 {
   "extends": "../tsconfig.json",
   "compilerOptions": {
+    "noEmit": true,
     "isolatedModules": false,
-    "types": ["node", "vitest/globals"],
-    "paths": {
-      "client/*": ["../src/client/*"],
-      "node/*": ["../src/node/*"],
-      "shared/*": ["../src/shared/*"]
-    }
+    "types": ["node", "vitest/globals"]
   }
 }

__tests__/unit/tsconfig.json

@@ -0,0 +1,18 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "types": [
+      "node",
+      "vitest/globals",
+      "vite/client",
+      "../../src/client/shims.d.ts"
+    ],
+    "paths": {
+      "client/*": ["../../src/client/*"],
+      "node/*": ["../../src/node/*"],
+      "shared/*": ["../../src/shared/*"],
+      "vitepress": ["../../src/client/index.ts"],
+      "vitepress/theme": ["../../theme.d.ts"]
+    }
+  }
+}

docs/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "noEmit": true,
+    "types": ["node"]
+  },
+  "include": ["**/*", ".vitepress/**/*"]
+}

package.json

@@ -62,7 +62,8 @@
     "build:prepare": "pnpm clean && node scripts/copyShared.ts",
     "build:client": "vue-tsc --noEmit -p src/client && tsc -p src/client && node scripts/copyClient.ts",
     "build:node": "tsc -p src/node --noEmit && rollup --config rollup.config.ts --configPlugin esbuild",
-    "test": "pnpm --aggregate-output --reporter=append-only '/^test:(unit|e2e|init)$/'",
+    "test": "pnpm --aggregate-output --reporter=append-only '/^test:(types|unit|e2e|init)$/'",
+    "test:types": "tsc -p __tests__/unit && tsc -p __tests__/e2e && tsc -p __tests__/init && vue-tsc -p docs",
     "test:unit": "vitest run -r __tests__/unit",
     "test:unit:watch": "vitest -r __tests__/unit",
     "test:e2e": "pnpm test:e2e-dev && pnpm test:e2e-build",