Check for internet connectivity using HTTP

checkHTTP.js

const { parse } = require("url");

function checkHTTP(url) {
  return new Promise((resolve, reject) => {
    const { protocol } = parse(url);
    const lib = protocol === "https:" ? require("https") : require("http");

    const request = lib.get(url, response => {
      console.log(`HTTP Status Code:`, response.statusCode);
      resolve(response);
    });

    request.on("error", err => {
      console.error(
        `Error trying to connect via ${protocol.replace(":", "").toUpperCase()}`
      );
      reject(err);
    });
  });
}

Example, how to call that function:

let isOnline;

checkHTTP("https://www.ecosia.org/")
  .then(() => (isOnline = true))
  .catch(() => (isOnline = false))
  .finally(() => console.log({ isOnline }));