refactor!: migrate to ESM, Replace Jest with native test runner (#39)

* refactor: convert all source files to ESM pt 1
* build: upgrade deps to latest; migrate to newer eslint flat config; lint src
* test: migrate tests to ESM
* build: use browser-compatible implementation of EventEmitter; examples working
* test: reinstate test for optional dependency `canvas`
* refactor!: de-jestify part 1
* test!: dejestify, part 2/2
* ci: remove node 18 support
* ci: run apt update to prevent 404 errors
* build(examples/web): upgrade deps to latest

.github/workflows/nodejs.yml

@@ -11,13 +11,15 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [18.x, 20.x, 22.x, 23.x, latest]
+        node-version: [20.x, 22.x, 23.x, latest]
     steps:
     - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
+    - name: Update repositories 
+      run: sudo apt-get update
     - name: Install system dependencies
       run: sudo apt-get install libcairo2-dev libpango1.0-dev libgif-dev
     - run: npm ci

README.md

@@ -24,8 +24,8 @@ Supports:
 Requirements
 ------------
 
- * Node 18+
- * Supported Device
+ * Node 20+
+ * Supported Devices:
    * Loupedeck Live
    * Loupedeck Live S
    * Loupedeck CT

__mocks__/serialport.js

@@ -15,7 +15,7 @@ Sec-WebSocket-Accept: PLOTDYCXHOTMeouth==
 `
 
 // Stand-in for a Loupedeck serial device
-export class SerialPort extends EventEmitter {
+export class MockSerialPort extends EventEmitter {
     static list() {
         return [
             {

__mocks__/ws.js

@@ -1,7 +1,7 @@
 import EventEmitter from 'node:events'
 
 // Stand-in for a real WebSocket
-export default class MockSocket extends EventEmitter {
+export class MockSocket extends EventEmitter {
     constructor(url) {
         super()
         this.url = url

eslint.config.js

@@ -1,10 +1,8 @@
 import jsConfig from '@appliedminds/eslint-config'
-import jest from 'eslint-plugin-jest'
 import globals from 'globals'
 
 export default [
     ...jsConfig,
-    jest.configs['flat/recommended'],
     {
         languageOptions: {
             globals: {

examples/web/README.md

@@ -8,8 +8,8 @@ It uses [Vite](https://github.com/vitejs/vite) & [Vue 3](https://github.com/vuej
 Requirements
 ------------
 
- * Node 16+
- * Supported Browser
+ * Node 20+
+ * Supported Browsers
    * Google Chrome 89+
    * Microsoft Edge 89+
    * Opera 67+