node_fetchRemote.js

/**
 * @param {string} url
 * @returns {Promise<string>}
 * @private
 */
async function _fetchRemote(url) {
    const http = /^https:/.test(url) ? require('https') : require('http');
    return new Promise((resolve, reject) => {
        http.get(url, res => {
            res.setEncoding('utf8');
            let body = '';
            res.on('data', (data) => {
                body += data;
            });
            res.on('end', () => {
                resolve(body);
            });
        }).on('error', (err) => {
            reject(err);
        });
    });
}

Usage (await):

const exampleBody = await _fetchRemote('http://example.com')
    .catch((ex) => { console.log(ex.message); });

Usage (promise):

let exampleBody;
_fetchRemote('http://example.com')
    .then((body) => { exampleBody = body; })
    .catch((ex) => { console.log(ex.message); });