const proxy_check = require('proxy-check');
const proxy = {
host: '54.82.74.24',
port: 5557,
proxyAuth: 'y0adXjeO:pAzAHCr4'
};
// or
// const proxy = 'y0adXjeO:[email protected]:5557';
proxy_check(proxy).then(r => {
console.log(r); // true
}).catch(e => {
console.error(e); // ECONNRESET
});