// Old, but still works, not deprecated:
const System = imports.system;  // built-in module
imports.gi.versions.Gtk = '3.0';
const {Gtk} = imports.gi;  // G-I binding
imports.searchPath.unshift('resource:https:///com/example/MyApp');
const {MyClass, myFunction} = imports.src.myModule;
  // imports src/myModule.js from search path

// New 👍
import System from 'system';  // built-in module
import Gtk from 'gi:https://Gtk?version=3.0';  // G-I binding
import {MyClass, myFunction} from './src/myModule.js';
  // imports path relative to currently executing file

// NOT POSSIBLE 🚫
if (usingSomeLibrary)
    import SomeLibrary from 'gi:https://SomeLibrary';

// Possible ✅
if (usingSomeLibrary)
    const SomeLibrary = await import('gi:https://SomeLibrary');

function myFunction(a, b, c) {
    const d = Math.random();
    debugger;
}
myFunction(3, 2, 1);

Properties: {
    myArray: GObject.ParamSpec.jsobject('my-array', 'My array',
        'You can now use JS objects as the value of GObject properties',
        GObject.ParamFlags.READWRITE),
},

// Old, but still works, not deprecated:
const ByteArray = imports.byteArray;
const pizza = ByteArray.toString(Uint8Array.of(0xf0, 0x9f, 0x8d, 0x95) /*, 'utf-8' */);
const pizzaBytes = ByteArray.fromString('🍕' /*, 'utf-8' */);

// New 👍
const decoder = new TextDecoder(/* 'utf-8' */);
const pizza = decoder.decode(Uint8Array.of(0xf0, 0x9f, 0x8d, 0x95));
const encoder = new TextEncoder();
const pizzaBytes = encoder.encode('🍕');

// Old, but still works, not deprecated:
log('A message from your program');

// New, nice if you're used to browsers and Node:
console.log('A message from your program');

// Opt-in per method no longer needed:
// Gio._promisify(Gio._LocalFilePrototype, 'load_contents_async', 'load_contents_finish');
const [contents] = await file.load_contents_async(/* cancel = */ null);

class MyClass {
    #value;

    someMethod() {
        doSomethingWith(this.#value);
    }
}

const arr = [1, 2, 3, 4, 5, 6, 7];
arr.at(0)  // 1
arr.at(-1)  // 7
arr.at(999)  // undefined
'my string'.at(-7)  // ' '

arr[arr.length - 1]  // no longer necessary!

const cancellable = new Gio.Cancellable();
const fastestServer = await Promise.any([
    checkServer(EAST, cancellable),
    checkServer(WEST, cancellable),
    waitSeconds(30),
]);
if (!fastestServer) {
    cancellable.cancel();
    notify('No server found within 30 seconds');
}