Firebase Dynamic Links With REST APIs On Node.js - Create a short link from a long link

app.js

const request = require('request');
const API_KEY = 'xxx';
const body = {
    'longDynamicLink': 'https://niralar.page.link/?link=http://niralar.com/building-rest-apis-with-swagger-on-node-js/'
}

request({
    url: `https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=${API_KEY}`,
    method: 'POST', json: true, body
}, function (error, response) {
    if (error) {
        console.log('Error :', error)
    } else {
        if (response && response.statusCode !== 200) {
            console.log('Error on Request :', response.body.error.message)
        } else {
            console.log('Dynamic Link :', response.body);
        }
    }
});