sdk 2 - Cannot emit events that don't have any extensions

[aliok]

const { CloudEvent, HTTPEmitter } = require("cloudevents-sdk");
let emitter = new HTTPEmitter({
    url: // some url
});

    let myevent = new CloudEvent({
        source: "urn:event:from:my-api/resource/123",
        type: "your.event.source.type",
        id: "your-event-id",
        dataContentType: "application/json",
        data: {"hello": "World " + eventIndex},
    });

    // Emit the event
    emitter.send(myevent)
        .then(response => {
            // Treat the response
            console.log("Event posted successfully");
            console.log(response.data);
        })
        .catch(err => {
            // Deal with errors
            console.log("Error during event post");
            console.error(err);
        });

Error during event post
TypeError: Cannot convert undefined or null to object

Following code doesn't check if the event has extensions or not:
https://github.com/cloudevents/sdk-javascript/blob/master/lib/bindings/http/emitter_binary.js#L73

OR,
extensions property of CloudEvent is not initialized.