refactor(repo): changed tsconfig to generate type defination

Author: limplash

package.json

@@ -1,8 +1,9 @@
 {
   "name": "string-cipher",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "Simple string encryption and decryption functions",
   "main": "./dist/index.js",
+  "types": "dist/index.d.ts",
   "repository": {
     "type": "git",
     "url": "https://github.com/limplash/string-cipher.git"

tsconfig.json

@@ -1,13 +1,14 @@
 {
     "compilerOptions": {
       "module": "commonjs",
-      "target": "es2015",
+      "target": "es6",
       "lib": [
         "es2020"
       ],
       "moduleResolution": "node",
       "baseUrl": "./",
-      "outDir": "./dist"
+      "outDir": "./dist",
+      "declaration": true
     },
     "exclude": [
       "node_modules",