Why I get 7 strings when I log out typeof body

const https = require('https');

const username = 'mbarra';

// Function to print message to console
function printMessage(username, badgeCount, points) {
    const message = `${username} has ${badgeCount} total badges(s) and ${points} points in JavaScript`;
    console.log(message);
}

// Connect to the API URL (https://teamtreehouse.com/username.json)
const request = https.get(`https://teamtreehouse.com/${username}.json`, response => {
    response.on('data', data => {
        let body = '';
        // Read the data
        response.on('data', data => {
            body += data.toString();
        });

        response.on('end', () => {
            // Parse the data
            // console.log(body);
            console.log(typeof body);
            // Print the data
        });
    });
});