plugins/catalog-backend: typecheck migration files

plugins/catalog-backend/migrations/20200511113813_init.js

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+// @ts-check
+
 /**
  * @param {import('knex')} knex
  */

plugins/catalog-backend/migrations/20200520140700_location_update_log_table.js

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+// @ts-check
+
 /**
  * @param {import('knex')} knex
  */

plugins/catalog-backend/migrations/20200527114117_location_update_log_latest_view.js

@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+// @ts-check
+
 /**
  * @param {import('knex')} knex
  */

tsconfig.json

@@ -1,6 +1,11 @@
 {
   "extends": "@backstage/cli/config/tsconfig.json",
-  "include": ["packages/*/src", "plugins/*/src", "plugins/*/dev"],
+  "include": [
+    "packages/*/src",
+    "plugins/*/src",
+    "plugins/*/dev",
+    "plugins/*/migrations"
+  ],
   "compilerOptions": {
     "outDir": "dist"
   }