diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..62f9b88
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,28 @@
+type Kicker = {
+  text: () => Promise<SimpleResponse>,
+  json: () => Promise<SimpleResponse>,
+  html: () => Promise<SimpleResponse>
+}
+
+type SimpleRequest = {
+  method: string,
+  url: string,
+  body: FormData | null,
+  headers: Headers
+}
+
+export type SimpleResponse = {
+  url: string,
+  status: number,
+  statusText: string,
+  headers: Headers,
+  text: string,
+  json: {[key: string]: any},
+  html: DocumentFragment
+}
+
+export type RemoteFormHandler = (form: HTMLFormElement, kicker: Kicker, req: SimpleRequest) => void | Promise<void>;
+export function afterRemote(fn: (form: HTMLFormElement) => void): void;
+export function beforeRemote(fn: (form: HTMLFormElement) => void): void;
+export function remoteForm(selector: string, fn: RemoteFormHandler): void;
+export function remoteUninstall(selector: string, fn: RemoteFormHandler): void;
diff --git a/package.json b/package.json
index 28b40c4..3cf7ef9 100755
--- a/package.json
+++ b/package.json
@@ -4,10 +4,12 @@
   "description": "Decorator that will submit a form over AJAX",
   "repository": "github/remote-form",
   "files": [
-    "dist"
+    "dist",
+    "index.d.ts"
   ],
   "main": "dist/index.umd.js",
   "module": "dist/index.esm.js",
+  "types:": "index.d.ts",
   "scripts": {
     "clean": "rm -rf dist",
     "lint": "github-lint",
diff --git a/src/index.js b/src/index.js
index 6983927..001e327 100644
--- a/src/index.js
+++ b/src/index.js
@@ -50,7 +50,7 @@ type SimpleRequest = {
 export type SimpleResponse = {
   url: string,
   status: number,
-  statusText: ?string,
+  statusText: string,
   headers: Headers,
   text: string,
   // eslint-disable-next-line flowtype/no-weak-types
diff --git a/src/index.js.flow b/src/index.js.flow
index ef0ac86..c8a8f24 100644
--- a/src/index.js.flow
+++ b/src/index.js.flow
@@ -16,7 +16,7 @@ type SimpleRequest = {
 export type SimpleResponse = {
   url: string,
   status: number,
-  statusText: ?string,
+  statusText: string,
   headers: Headers,
   text: string,
   json: {[string]: any},
@@ -24,7 +24,7 @@ export type SimpleResponse = {
 }
 export type RemoteFormHandler = (form: HTMLFormElement, kicker: Kicker, req: SimpleRequest) => void | Promise<void>;
 
-declare export function afterRemote(fn: (form: HTMLFormElement) => mixed): void;
-declare export function beforeRemote(fn: (form: HTMLFormElement) => mixed): void;
+declare export function afterRemote(fn: (form: HTMLFormElement) => void): void;
+declare export function beforeRemote(fn: (form: HTMLFormElement) => void): void;
 declare export function remoteForm(selector: string, fn: RemoteFormHandler): void;
 declare export function remoteUninstall(selector: string, fn: RemoteFormHandler): void;