diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..019bb40
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,19 @@
+// TypeScript Version: 3.5
+
+import {Node, Parent} from 'unist'
+import {Test} from 'unist-util-is'
+
+export = findAllAfter
+/**
+ * Unist utility to get all children of a parent after a node or index
+ *
+ * @param parent Parent to search in
+ * @param index or Node to start from
+ * @param test that Nodes must pass to be included
+ * @returns Array of found Nodes
+ */
+declare function findAllAfter<T extends Node>(
+  parent: Parent,
+  index: number | Node,
+  test?: Test<T> | Array<Test<T>>
+): Node[]
diff --git a/package.json b/package.json
index c728996..53d4828 100644
--- a/package.json
+++ b/package.json
@@ -19,13 +19,21 @@
   },
   "author": "Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)",
   "contributors": [
-    "Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)"
+    "Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)",
+    "Lucas Brandstaetter <lucas@brandstaetter.tech> (https://github.com/Roang-zero1)"
   ],
+  "files": [
+    "index.js",
+    "index.d.ts"
+  ],
+  "types": "index.d.ts",
   "dependencies": {
     "unist-util-is": "^4.0.0"
   },
   "devDependencies": {
+    "@types/tape": "^4.2.33",
     "browserify": "^16.0.0",
+    "dtslint": "^2.0.2",
     "nyc": "^14.0.0",
     "prettier": "^1.0.0",
     "remark": "^11.0.0",
@@ -33,16 +41,18 @@
     "remark-preset-wooorm": "^6.0.0",
     "tape": "^4.0.0",
     "tinyify": "^2.0.0",
+    "typescript": "^3.7.2",
     "xo": "^0.25.0"
   },
   "scripts": {
-    "format": "remark . -qfo && prettier --write \"**/*.js\" && xo --fix",
+    "format": "remark . -qfo && prettier --write \"**/*.{js,ts}\" && xo --fix",
     "build-bundle": "browserify . -s unistUtilFindAllAfter -o unist-util-find-all-after.js",
     "build-mangle": "browserify . -s unistUtilFindAllAfter -p tinyify -o unist-util-find-all-after.min.js",
     "build": "npm run build-bundle && npm run build-mangle",
     "test-api": "node test",
     "test-coverage": "nyc --reporter lcov tape test.js",
-    "test": "npm run format && npm run build && npm run test-coverage"
+    "test-types": "dtslint .",
+    "test": "npm run format && npm run build && npm run test-coverage && npm run test-types"
   },
   "nyc": {
     "check-coverage": true,
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..6fd80d5
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "lib": ["es2015"],
+    "strict": true,
+    "baseUrl": ".",
+    "paths": {
+      "unist-util-find-all-after": ["index.d.ts"]
+    }
+  }
+}
diff --git a/tslint.json b/tslint.json
new file mode 100644
index 0000000..70c4494
--- /dev/null
+++ b/tslint.json
@@ -0,0 +1,7 @@
+{
+  "extends": "dtslint/dtslint.json",
+  "rules": {
+    "semicolon": false,
+    "whitespace": false
+  }
+}
diff --git a/unist-util-find-all-after-test.ts b/unist-util-find-all-after-test.ts
new file mode 100644
index 0000000..058b4d5
--- /dev/null
+++ b/unist-util-find-all-after-test.ts
@@ -0,0 +1,37 @@
+import {Node, Parent} from 'unist'
+import findAllAfter = require('unist-util-find-all-after')
+
+const heading: Node = {
+  type: 'heading',
+  depth: 2,
+  children: []
+}
+
+const parent: Parent = {
+  type: 'root',
+  children: [heading]
+}
+
+/*=== missing params ===*/
+// $ExpectError
+findAllAfter()
+// $ExpectError
+findAllAfter(parent)
+
+/*=== find by index/node ===*/
+findAllAfter(parent, 1)
+findAllAfter(parent, heading)
+// $ExpectError
+findAllAfter(parent, false)
+
+/*=== find with test ===*/
+// $ExpectError
+findAllAfter(parent, 1, false)
+findAllAfter(parent, 1, 'paragraph')
+
+/*=== invalid return ===*/
+// $ExpectError
+const returnIsString: string = findAllAfter(parent, 1)
+
+/*=== valid return ===*/
+const nodes: Node[] = findAllAfter(parent, 1)