How to access google analytics from node.js?

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npm install googleapis

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const { google } = require('googleapis');
const key = require('./path/to/client_secret.json'); // Path to the client secret JSON file

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const jwtClient = new google.auth.JWT(
    key.client_email,
    null,
    key.private_key,
    ['https://www.googleapis.com/auth/analytics.readonly']
);

jwtClient.authorize(function(err, tokens) {
    if (err) {
        console.log(err);
        return;
    }
});

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const analyticsReporting = google.analyticsreporting({
    version: 'v4',
    auth: jwtClient
});

analyticsReporting.reports.batchGet({
    requestBody: {
        reportRequests: [
            {
                viewId: 'YOUR_VIEW_ID',
                dateRanges: [
                    {
                        startDate: '7daysAgo',
                        endDate: 'today'
                    }
                ],
                metrics: [
                    { expression: 'ga:sessions' }
                ]
            }
        ]
    }
}, (err, res) => {
    if (err) {
        console.log('The API returned an error: ' + err);
        return;
    }
    
    console.log(res.data);
});