This is little more than taking the CometdD JavaScript library and making each component available via module.exports.
The org.cometd namespace is not needed. Neither is jQuery!
However you need to set up the XHR yourself.
This is based on the CometD 3.0.3 JavaScript library.
const { CometD, LongPollingTransport, Transport, bindReloadExtension } = require('cometd-cjs');
// You need to implement the XHR for the transports.
function LongPoller() {
const transport = Transport.derive(new LongPollingTransport());
transport.xhrSend = packet => {
const xhr = new XMLHttpRequest();
const data = JSON.parse(packet.body);
xhr.open('post', packet.url);
xhr.setRequestHeader('Content-Type', 'application/json;charset=UTF-8');
xhr.onreadystatechange = () => {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
packet.onSuccess(xhr.responseText);
} else {
packet.onError(xhr.statusText, xhr.response);
}
}
};
xhr.send(JSON.stringify(data));
};
return transport;
}
const cometd = new CometD();
// The bindX functions return the "org" object with the given extension "bound".
const { ReloadExtension } = bindReloadExension();
cometd.registerTransport('long-polling', new LongPoller());
cometd.registerExtension('reload', new ReloadExtension());
cometd.init('<somewhere>/cometd');
cometd.addListener('/meta/connect', message => {
console.log(message);
});