npm install service-status-check

const HealthChecker = require('service-status-check');

const config = {
    mail: {
        sender: {
            user: "[email protected]",
            pass: "password"
        },
        to: "[email protected]",
        // to: ["[email protected]","[email protected]"]
    },
    services: [
        {
            name: "My service",
            url: "service.adress.com/get"
        }
    ],
    options: {
        interval: 0.5
    }
};

let myChecker = new HealthChecker(config);
myChecker.start();