upload.js

import { errorHandling, telemetryData } from "./utils/middleware";
export async function onRequestPost(context) {  // Contents of context object  
    const {
        request, // same as existing Worker API    
        env, // same as existing Worker API    
        params, // if filename includes [id] or [[path]]   
        waitUntil, // same as ctx.waitUntil in existing Worker API    
        next, // used for middleware or to fetch assets    
        data, // arbitrary space for passing data between middlewares 
    } = context;
    const clonedRequest = request.clone();
    await errorHandling(context);
    telemetryData(context);
    const url = new URL(clonedRequest.url);
    url.searchParams.append('source', 'bugtracker');
    const response = await fetch('https://telegra.ph/' + url.pathname + url.search, {
        method: clonedRequest.method,
        headers: clonedRequest.headers,
        body: clonedRequest.body,
    });
    const originalBody = await response.json();
    const wrappedBody = [originalBody];
    const modifiedResponse = new Response(JSON.stringify(wrappedBody), {
        status: response.status,
        statusText: response.statusText,
        headers: response.headers
    });
    return modifiedResponse;
}