I have a for loop array of promises, so I used Promise.all to go through them and called then afterwards.
let promises = []; promises.push(promise1); promise
Without async/await, it's quite nasty. With async/await, just do this:
Promise.all(promises).then(async (responses) => { for (...) { await new Promise(fulfill => stream.on("finish", fulfill)); //extract the text out of the PDF } })