Check TLS certificates with node.js

cert.js

const https = require('https');

const [,,domain] = process.argv;

const options = {
    host: domain,
    port: 443,
    method: 'GET',
    rejectUnauthorized: true
};

const req = https.request(options, function(res) {
    const cert = res.connection.getPeerCertificate();
    const SANs = cert.subjectaltname;

    const currentDate = new Date();

    if(Date.parse(cert.valid_from) > currentDate || Date.parse(cert.valid_to) < currentDate) {
        process.exit(1);
    }

    if ((!SANs.indexOf(domain) || (!SANs.indexOf(`*.${domain}`)))) {
        process.exit(1);
    }
    process.exit(0);
});

req.end();