demo.js

const LighthouseCron = require('./');

// Additional website and description fields added to improve your dashboards
const lighthouseCron = new LighthouseCron(
  [
    {
      website: 'Google',
      description: 'Homepage',
      url: 'https://www.google.com/'
    },
    {
      website: 'YouTube',
      description: 'Homepage',
      url: 'https://www.youtube.com'
    }
  ],
  '00 00 * * * 0-6'
);

// listening for each audit to be complete
lighthouseCron.on('auditComplete', audit => {
  const report = generateTrackableReport(audit);
  console.log(report);
});

// Pulling out the metrics we are interested in
function generateTrackableReport(audit) {
  const reports = [
    'first-meaningful-paint',
    'speed-index-metric',
    'estimated-input-latency',
    'time-to-interactive',
    'total-byte-weight',
    'dom-size'
  ];

  const obj = {
    metadata: audit.metadata,
    score: Math.round(audit.score),
    results: {}
  };

  reports.forEach(report => {
    obj.results[report] = getRequiredAuditMetrics(audit.results.audits[report]);
  });
  return obj;
}

// getting the values we interested in
function getRequiredAuditMetrics(metrics) {
  return {
    score: metrics.score,
    value: metrics.rawValue,
    optimal: metrics.optimalValue
  };
}

lighthouseCron.init(true);