Include type definitions in the NPM package

index.d.ts

@@ -1,5 +1,5 @@
-// Type definitions for better-sqlite3 7.6
-// Project: https://github.com/JoshuaWise/better-sqlite3
+// Type definitions for better-sqlite3-multiple-ciphers 8.5.0
+// Project: https://github.com/m4heshd/better-sqlite3-multiple-ciphers
 // Definitions by: Ben Davies <https://github.com/Morfent>
 //                 Mathew Rumsey <https://github.com/matrumz>
 //                 Santiago Aguilar <https://github.com/sant123>

package.json

@@ -11,6 +11,7 @@
   "main": "lib/index.js",
   "types": "index.d.ts",
   "files": [
+    "index.d.ts",
     "binding.gyp",
     "src/*.[ch]pp",
     "lib/**",
@@ -21,6 +22,7 @@
     "prebuild-install": "^7.1.0"
   },
   "devDependencies": {
+    "@types/node": "20.4.9",
     "chai": "^4.3.6",
     "cli-color": "^2.0.2",
     "fs-extra": "^10.1.0",