query-google.js

let propertyId = '<<ENTER YOUR PROPERTY ID HERE>>';
// Get the day 31 days ago
let today = new Date().getTime() - (60 * 60 * 24 * 31 * 1000);
// Get the day, month and year
let day = new Date(today).getDate();
let month = new Date(today).getMonth() + 1;
let year = new Date(today).getFullYear();
// Put it in Google's date format
let dayFormat = `${year}-${month}-${day}`;

const [response] = await analyticsDataClient.runReport({
    property: 'properties/' + propertyId,
    dateRanges: [
    {
        // Run from today to 31 days ago
        startDate: dayFormat,
        endDate: 'today',
    }
    ],
    dimensions: [
    {
        // Get the page path
        name: 'pagePathPlusQueryString',
    },
    {
        // And also get the page title
        name: 'pageTitle'
    }
    ],
    metrics: [
    {
        // And tell me how many active users there were for each of those
        name: 'activeUsers',
    },
    ],
});