test.js

/**
 * TODO(developer): Uncomment this variable and replace with your
 *   Google Analytics 4 property ID before running the sample.
 */
let propertyId = '301922918';

// Imports the Google Analytics Data API client library.
import {BetaAnalyticsDataClient} from '@google-analytics/data';

// Using a default constructor instructs the client to use the credentials
// specified in GOOGLE_APPLICATION_CREDENTIALS environment variable.
const analyticsDataClient = new BetaAnalyticsDataClient();

// Runs a simple report.
async function runReport() {
  const [response] = await analyticsDataClient.runReport({
    property: `properties/${propertyId}`,
    dateRanges: [
      {
        startDate: '2024-03-31',
        endDate: 'today',
      },
    ],
    dimensions: [
      {
        name: 'browser',
      },
    ],
    metrics: [
      {
        name: 'activeUsers',
      },
    ],
  });

  console.log('Report result:');
  response.rows.forEach(row => {
    console.log(row.dimensionValues[0], row.metricValues[0]);
  });
}

runReport();