Migration to bun and Refactor

Author: owjs3901

package.json

@@ -7,14 +7,19 @@
   "scripts": {
     "test": "bun test",
     "lint": "eslint",
-    "build": "tsc && bun build --target node src/index.ts --production --outfile dist/index.cjs --format cjs --packages external && bun build --target node src/index.ts --production --outfile dist/index.mjs --format esm --packages external",
+    "build": "tsc && bun build --target node src/index.ts --production --outfile dist/index.cjs --format cjs --packages external && bun build --target node src/index.ts --production --outfile dist/index.mjs --format esm --packages external && cp dist/index.d.ts dist/index.d.cts",
     "prepare": "husky"
   },
   "exports": {
     ".": {
-      "types": "./dist/index.d.ts",
-      "import": "./dist/index.mjs",
-      "require": "./dist/index.cjs"
+      "import": {
+        "types": "./dist/index.d.ts",
+        "default": "./dist/index.mjs"
+      },
+      "require": {
+        "types": "./dist/index.d.ts",
+        "default": "./dist/index.cjs"
+      }
     }
   },
   "types": "./dist/index.d.ts",