Facebook Messenger bot not sending messages in order

Question

I\'m playing around with building a simple Facebook Messenger chatbot and I\'m having trouble sending messages in sequence.

In the example above, it should

Answer 1

Based on the recursive solution proposed by @user3884594, I kind of make it work using this (I removed the error handling in order to simplify):

send_messages (["message 01", "message 02", "message 03"]);

function send_messages (which, i = 0)
{
    request({
        url: 'https://graph.facebook.com/v2.10/me/messages',
        qs: { access_token: FACEBOOK_ACCESS_TOKEN },
        method: 'POST',
        json: { recipient: { id: senderId }, message: { text: which [i] }
    }, (error, response, body) => 
    {
        // You need to put your error handling logic here
        if (i++ < which.length - 1)
            send_messages (which, i);
    });
}