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Accessing the object

Access custom Cloudflare properties and control how Cloudflare features are applied to every request.
addEventListener('fetch', event => {
const data =
event.request.cf !== undefined
? event.request.cf
: { error: 'The `cf` object is not available inside the preview.' };
return event.respondWith(
new Response(JSON.stringify(data, null, 2), {
headers: {
'content-type': 'application/json;charset=UTF-8',
},
})
);
});