add type definition test with tsd

Author: kazupon

package.json

@@ -55,6 +55,7 @@
     "opener": "^1.5.1",
     "shipjs": "^0.12.0",
     "ts-jest": "^24.2.0",
+    "tsd": "^0.11.0",
     "typescript": "^3.7.3",
     "typescript-eslint-language-service": "^2.0.0",
     "vue": "^2.6.10",
@@ -64,7 +65,8 @@
     "node": ">= 10"
   },
   "files": [
-    "types",
+    "types/shims-vue-template-compiler.d.ts",
+    "types/index.d.ts",
     "lib"
   ],
   "homepage": "https://github.com/kazupon/vue-i18n-locale-message#readme",
@@ -92,9 +94,10 @@
     "lint": "eslint ./src ./test --ext .ts",
     "release:prepare": "shipjs prepare",
     "release:trigger": "shipjs trigger",
-    "test": "npm run lint && npm run test:cover",
+    "test": "npm run lint && npm run test:types && npm run test:cover",
     "test:cover": "npm run test:unit -- --coverage",
     "test:unit": "jest --env node",
+    "test:types": "tsd",
     "test:watch": "jest --env node --watch"
   },
   "types": "types/index.d.ts"

test-d/index.test-d.ts

@@ -0,0 +1,74 @@
+import { expectType } from 'tsd'
+import {
+  MetaLocaleMessage,
+  squeeze,
+  infuse,
+  SFCFileInfo
+} from '../types'
+
+const files: SFCFileInfo[] = [{
+  path: '/path/to/target/src/components/Hello.vue',
+  content: `
+    <template>
+      <!-- template contents is here ... -->
+    </template>
+
+    <script>
+      // script codes is here ...
+    </script>
+
+    <style scoped>
+      // css style codes is here ...
+    </style>
+
+    <i18n>
+    {
+      "en": {
+        "ok": "OK",
+        "cancel": "Cancel"
+      },
+      "ja": {
+        "ok": "OK",
+        "cancel": "キャンセル"
+      }
+    }
+    </i18n>
+`
+}]
+
+expectType<MetaLocaleMessage>(squeeze('/path/to/target', files))
+
+const metaLocaleMessage: MetaLocaleMessage = {
+  target: '/path/to/target',
+  components: {
+    '/path/to/project1/src/App.vue': [
+      {
+        lang: 'json',
+        messages: {
+          ja: {
+            title: 'アプリケーション',
+            lang: '言語切り替え'
+          },
+          en: {
+            title: 'Application',
+            lang: 'Change languages'
+          }
+        }
+      }
+    ],
+    '/path/to/project1/src/components/Modal.vue': [
+      {
+        lang: 'yaml',
+        locale: 'ja',
+        messages: {
+          ja: {
+            ok: 'OK',
+            cancel: 'キャンセル'
+          }
+        }
+      }
+    ]
+  }
+}
+
+expectType<SFCFileInfo[]>(infuse('/path/to/target', files, metaLocaleMessage, { intend: 2, eof: '\n' }))