fix: NPM package contents

Author: franky47

.npmignore

@@ -9,3 +9,8 @@ src/**
 test/
 coverage/
 .dependabot/
+.next/
+pages/
+out/
+next-env.d.ts
+next.config.js

package.json

@@ -27,7 +27,7 @@
     "test": "jest --coverage",
     "test:watch": "jest --watch",
     "build:clean": "rm -rf ./dist",
-    "build:ts": "tsc",
+    "build:ts": "tsc --project tsconfig.base.json",
     "build": "run-s build:clean build:ts",
     "ci": "run-s build test"
   },