Unexpected `await` inside a loop. (no-await-in-loop)

Question

How Should I await for bot.sendMessage() inside of loop?
Maybe I Need await Promise.all But I Don't Know How Should I add to bot.sendMessage()

Code:

const promise = query.exec(); promise.then(async (doc) => {     let count = 0;     for (const val of Object.values(doc)) {         ++count;         await bot.sendMessage(msg.chat.id, `💬 ${count} and ${val.text}`, opts);     } }).catch((err) => {     if (err) {         console.log(err);     } }); 

Error:

[eslint] Unexpected `await` inside a loop. (no-await-in-loop) 

Answer 1

If you need to send each message one-at-a-time, then what you have is fine, and according to the docs, you can just ignore the eslint error like this:

const promise = query.exec(); promise.then(async doc => {   /* eslint-disable no-await-in-loop */   for (const [index, val] of Object.values(doc).entries()) {     const count = index + 1;     await bot.sendMessage(msg.chat.id, `💬 ${count} and ${val.text}`, opts);   }   /* eslint-enable no-await-in-loop */ }).catch(err => {   console.log(err); }); 

However, if there is no required order for sending the messages, you should do this instead to maximize performance and throughput:

const promise = query.exec(); promise.then(async doc => {   const promises = Object.values(doc).map((val, index) => {     const count = index + 1;     return bot.sendMessage(msg.chat.id, `💬 ${count} and ${val.text}`, opts);   });    await Promise.all(promises); }).catch(err => {   console.log(err); });