Terminal.js | Lightweight Screen Buffer | Runtime Evironment library

I am trying to use the jQuery-Autocomplete library on an text-input field (documentation here). Therefor I use this Ajax lookup to get data from the db:

According to second answer from here, I'm trying to create Singleton pattern in JS for storing data and invoking its prototypes from the other instances.

A main problem is Singleton doesn't store the data after receives the first instance.

[{…}] 0: {firstName: "John", lastName: "Grand"}

This is how I've done:

My goal is to export an extended class called Entrance without using curly brackets (Let's say subclass).

The problem is I can't access to the subclass while I'm using default keyword on it and the browser gives me an error such as this:

Uncaught SyntaxError: Duplicate export of 'default'

Code:

=================== Progress Update ===================

I've made my first Async function according to Mozilla and another tutorial. However, it couldn't prevent the event as I expected. It goes stacking when I click multiple times before the whole code is done.

My expectation is using async and promise to disable the event until the entire code is done which is the way that I use callback like this CodePen example.

Additionally, I can't fully understand the concept of Async and Promise. I think the Async + Promise function separates the code as itself such as the bookmark of the book in real life? It's really hard to understand what's going on inside of the code.

Can somebody explain to me that how async and promise work in the code and prevent the event?

This is a result that I've done so far:

I'm trying to open up a serial port and read incomming data:

I have next versions of react-native / react-native-cli:

I am trying to install Zurb Foundation CLI with npm. The install seems to go well, however, when I try to run a foundation command, things get ugly.

I use gulp to minimize all my js files and rename it to filename.min.js standard and copy to the production folder. But in that case the ACE library can't load theme and mode, because the folder doesn't include files: theme-terminal.js and mode-javascript.js, only theme-terminal.min.js and mode-javascript.min.js