Snippet for "Integrating Google Calendar (G-suite) in Node" https://hackernoon.com/my-journey-integrating-google-calendar-g-suite-in-node-62fbc8596455

read_calendar_list.js

const google = require("googleapis").google;
const calendar = google.calendar("v3");

(async function () {
    const scopes = ['https://www.googleapis.com/auth/calendar'];
    const keyFile = './xxxxxxxxxxx.json';   // Your should make it an environment variable

    const client = await google.auth.getClient({
        keyFile,
        scopes,
    });

    // Delegated Credential
    client.subject = "melvin@xxxxxxxxx.xx"; 

    const res = await calendar.calendarList.list({
        auth: client
    });

    console.log(JSON.stringify(res.data));
})();