npm install btc-fee
const btcfee = require('btc-fee')
btcfee.recommended().then(fee => {
console.log(fee); // { fast: 330, medium: 310, slow: 260 }
});
// About 180 minutes late is within an acceptable range
btcfee.estimated(180).then(fee => {
console.log(fee); // 210
});
MIT