Reverse Proxy Cloudflare

Reverse_hook.js

const DOMAIN = 'hook.wemakefuture.com';   // path to be proxied
const ORIGIN = 'hook.integromat.com';     // where to fetch content from

addEventListener('fetch', event => {
    var url = new URL(event.request.url);
    if (url.pathname != "") {
        console.log(url.pathname)
        event.respondWith(handleRequest(event, url))
    }
})

async function handleRequest(event, url) {
    const text = await event.request.clone().text()
    // Change URL from public URL to use the origin URL
    var originUrl = url.toString().replace(
        'https://' + DOMAIN + url.pathname, 
        'https://' + ORIGIN + url.pathname
    );

    try {
        const json = JSON.parse(text)
        //console.log("json")
        return await fetch(originUrl, {
            method: 'POST',
            headers: {
                'Accept': 'application/json',
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(json)
        });
    } catch(e) {
        //console.log("text")
        return await fetch(originUrl, {
            method: 'POST',
            body: text
        });
    }
}