diff --git a/.gitignore b/.gitignore
index c977c85..40205b1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .DS_Store
+*.d.ts.map
 *.d.ts
 *.log
 coverage/
diff --git a/package.json b/package.json
index 534e4c5..4d9111e 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,7 @@
   "exports": "./index.js",
   "files": [
     "lib/",
+    "index.d.ts.map",
     "index.d.ts",
     "index.js"
   ],
diff --git a/tsconfig.json b/tsconfig.json
index 91ae62d..22a9c48 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,9 +1,8 @@
 {
-  "include": ["**/*.js"],
-  "exclude": ["coverage/", "node_modules/"],
   "compilerOptions": {
     "checkJs": true,
     "declaration": true,
+    "declarationMap": true,
     "emitDeclarationOnly": true,
     "exactOptionalPropertyTypes": true,
     "forceConsistentCasingInFileNames": true,
@@ -13,5 +12,7 @@
     "skipLibCheck": true,
     "strict": true,
     "target": "es2022"
-  }
+  },
+  "exclude": ["coverage/", "node_modules/"],
+  "include": ["**/*.js"]
 }