Add filetype for ember js .gjs and .gts files

[velrest]

Im trying to add highlighting for .gjs and .gts files. I copied the .js and .hbs file and started to hack around a bit. But im now getting errors that my closing expansion characters are not commands. Could someone help me out on this?

This is just an attempt and by no means complete or anything yet. I just thought i would ask if someone could help me out on this since I've been struggling with this for some times.

Example of an .gjs file:

import { on } from '@ember/modifier';
import FancyButton from './fancy-button';

function greet() {
  alert("AHOY!")
}

<template>
  <p>Hello, {{@name}}!</p>
  <FancyButton @label="Say hello!" {{on "click" greet}} />
</template>