diff --git a/.gitignore b/.gitignore
index cfac988..b5761b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,8 @@
 coverage/
 node_modules/
-.DS_Store
+*.d.ts.map
 *.d.ts
 *.log
 *.tsbuildinfo
+.DS_Store
 yarn.lock
diff --git a/package.json b/package.json
index 87cd81a..b853ccc 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
   "exports": "./index.js",
   "files": [
     "lib/",
+    "index.d.ts.map",
     "index.d.ts",
     "index.js"
   ],
diff --git a/tsconfig.json b/tsconfig.json
index 82cc749..fc3d1e4 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,6 +2,7 @@
   "compilerOptions": {
     "checkJs": true,
     "customConditions": ["development"],
+    "declarationMap": true,
     "declaration": true,
     "emitDeclarationOnly": true,
     "exactOptionalPropertyTypes": true,