react-turnstile

A very simple React library for Cloudflare Turnstile.

Installation

npm i react-turnstile

Usage

import Turnstile, { useTurnstile } from "react-turnstile";

// ...

function TurnstileWidget() {
  const turnstile = useTurnstile();
  return (
    <Turnstile
      sitekey="1x00000000000000000000AA"
      onVerify={(token) => {
        fetch("/login", {
          method: "POST",
          body: JSON.stringify({ token }),
        }).then((response) => {
          if (!response.ok) turnstile.reset();
        });
      }}
    />
  );
}

Turnstile tokens expire after 5 minutes, to automatically reset the challenge once they expire, set the refreshExpired prop to 'auto' or reset the widget yourself using the onExpire callback.

Reducing Layout Shift

The turnstile iframe initially loads as invisible before becoming visible and expanding to the expected widget size.

This causes Layout Shift and reduces your Cumulative Layout Shift score and UX.

This can be fixed with the fixedSize={true} option, which will force the wrapper div to be the specific size of turnstile.

Bound Turnstile Object

The Bound Turnstile Object is given as argument to all callbacks and allows you to call certain window.turnstile functions without having to store the widgetId yourself.

function Component() {
  return (
    <Turnstile
      execution="execute"
      onLoad={(widgetId, bound) => {
        // before:
        window.turnstile.execute(widgetId);
        // now:
        bound.execute();
      }}
    />
  );
}

Documentation

Turnstile takes the following arguments:

name	type	description
sitekey	string	sitekey of your website (REQUIRED)
action	string	-
cData	string	-
theme	string	one of "light", "dark", "auto"
language	string	override the language used by turnstile
tabIndex	number	-
responseField	boolean	controls generation of <input /> element
responseFieldName	string	changes the name of <input /> element
size	string	one of "normal", "compact"
fixedSize	boolean	fix the size of the <div /> to reduce layout shift
retry	string	one of "auto", "never"
retryInterval	number	interval of retries in ms
refreshExpired	string	one of "auto", "manual", "never"
appearance	string	one of "always", "execute", "interaction-only"
execution	string	one of "render", "execute"
id	string	id of the div
userRef	Ref	custom react ref for the div
className	string	passed to the div
style	object	passed to the div

And the following callbacks:

name	arguments	description
onVerify	token	called when challenge is passed
onSuccess	token, preClearanceObtained	called when challenge is passed
onLoad	widgetId	called when the widget is loaded
onError	error	called when an error occurs
onExpire	-	called when the token expires
onTimeout	token	called when the challenge expires
onAfterInteractive	-	called when the challenge becomes interactive
onBeforeInteractive	-	called when the challenge no longer is interactive
onUnsupported	-	called when the browser is unsupported by Turnstile

The callbacks also take an additional BoundTurnstileObject which exposes certain functions of window.turnstile which are already bound to the current widget, so you don't need track the widgetId yourself.

For more details on what each argument does, see the Cloudflare Documentation.