diff --git a/lib/index.d.ts b/lib/index.d.ts
new file mode 100644
index 0000000..1820007
--- /dev/null
+++ b/lib/index.d.ts
@@ -0,0 +1,8 @@
+declare module "json-diff" {
+    interface Options {
+        color: boolean;
+        full: boolean;
+    }
+    export function diff(obj1: JSON, obj2: JSON, options: Options): JSON;
+    export function diffString(obj1: JSON, obj2: JSON, options: Options): string;
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index b58a0ce..ec20d8d 100644
--- a/package.json
+++ b/package.json
@@ -1,37 +1,38 @@
 {
-  "author": "Andrey Tarantsov <andreyvit@me.com>",
-  "contributors": [
-    "Gavriel Fleischer <flocsy@gmail.com>",
-    "Eric Woudenberg <eaw@woudy.org>"
-  ],
-  "name": "json-diff",
-  "description": "JSON diff",
-  "version": "1.0.3",
-  "homepage": "https://github.com/andreyvit/json-diff",
-  "license": "MIT",
-  "repository": {
-    "url": "git@github.com:andreyvit/json-diff.git"
-  },
-  "main": "lib/index.js",
-  "bin": "bin/json-diff.js",
-  "scripts": {
-    "fix": "eslint --fix lib",
-    "test": "coffee -c test; mocha test/*.js",
-    "cov": "rm -rf lib-cov; jscoverage lib lib-cov; env JSLIB=lib-cov mocha -R dot && env JSLIB=lib-cov mocha -R html-cov >coverage.html; open coverage.html"
-  },
-  "dependencies": {
-    "@ewoudenberg/difflib": "0.1.0",
-    "colors": "^1.4.0",
-    "dreamopt": "~0.8.0"
-  },
-  "devDependencies": {
-    "coffeescript": "^2.6.1",
-    "eslint": "^8",
-    "eslint-config-standard": "^17",
-    "jscoverage": "^0.6.0",
-    "mocha": "9.1.3"
-  },
-  "engines": {
-    "node": "*"
-  }
+    "author": "Andrey Tarantsov <andreyvit@me.com>",
+    "contributors": [
+        "Gavriel Fleischer <flocsy@gmail.com>",
+        "Eric Woudenberg <eaw@woudy.org>"
+    ],
+    "name": "json-diff",
+    "description": "JSON diff",
+    "version": "1.0.3",
+    "homepage": "https://github.com/andreyvit/json-diff",
+    "license": "MIT",
+    "repository": {
+        "url": "git@github.com:andreyvit/json-diff.git"
+    },
+    "main": "lib/index.js",
+    "types": "lib/index.d.ts",
+    "bin": "bin/json-diff.js",
+    "scripts": {
+        "fix": "eslint --fix lib",
+        "test": "coffee -c test; mocha test/*.js",
+        "cov": "rm -rf lib-cov; jscoverage lib lib-cov; env JSLIB=lib-cov mocha -R dot && env JSLIB=lib-cov mocha -R html-cov >coverage.html; open coverage.html"
+    },
+    "dependencies": {
+        "@ewoudenberg/difflib": "0.1.0",
+        "colors": "^1.4.0",
+        "dreamopt": "~0.8.0"
+    },
+    "devDependencies": {
+        "coffeescript": "^2.6.1",
+        "eslint": "^8",
+        "eslint-config-standard": "^17",
+        "jscoverage": "^0.6.0",
+        "mocha": "9.1.3"
+    },
+    "engines": {
+        "node": "*"
+    }
 }