diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..bbf1cc2
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,3 @@
+export function setForm(event: Event): void;
+export function restoreResumableFields(id: string, options?: {keyPrefix?: string}): void;
+export function persistResumableFields(id: string, options?: {selector?: string, keyPrefix?: string}): void;
diff --git a/package.json b/package.json
index b0d780e..47da59b 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "description": "Annotate fields to be persisted on navigation away from the current page.",
   "main": "dist/session-resume.umd.js",
   "module": "dist/session-resume.esm.js",
+  "types": "index.d.ts",
   "repository": "github/session-resume",
   "scripts": {
     "build": "rollup -c && cp session-resume.js.flow dist/session-resume.esm.js.flow && cp session-resume.js.flow dist/session-resume.umd.js.flow",
@@ -15,7 +16,8 @@
     "prepublishOnly": "npm run build"
   },
   "files": [
-    "dist"
+    "dist",
+    "index.d.ts"
   ],
   "keywords": [],
   "author": "",