Restart Web3TokenCharting on crash

restarter.js

require('dotenv').config();

// initialize mongodb
const Transactions = require('../server/models/history_transactions');
var configDB = require('../server/config/database');
const mongoose = require('mongoose');

console.log( configDB.url )
mongoose.connect(configDB.url, {
  autoIndex: false,
  useNewUrlParser: true,
  useUnifiedTopology: true
}).then(() => { console.log('14MongoDB is connected') })
.catch(err => {
  console.log('MongoDB connection unsuccessful');
  console.log(err)
});
const { exec } = require('child_process');



function sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
}
(async () => {
    let transactionsCount = await Transactions.countDocuments();
    while( true ){
        let newTransactionsCount = await Transactions.countDocuments();
        console.log(`[tx count] new: ${newTransactionsCount} | old: ${transactionsCount}` );
        if( transactionsCount >= newTransactionsCount ) {
            exec('pm2 restart 17', (err, stdout, stderr) => {
                if (err) {
                  // node couldn't execute the command
                  console.log('Could not execute command', err)
                  return;
                }
                console.log('Restarted process')
            });
        }
        transactionsCount = newTransactionsCount;
        await sleep( 60 * 1000 );
    }
})();