Added vitest & moved some func to top-level

Also added a first-draft test and a new github action to figure out how
it all works.

Author: FinalStaticFox

.github/workflows/deploy.yml

@@ -4,7 +4,7 @@ name: Deploy static content to Pages
 on:
   # Runs on pushes targeting the default branch
   push:
-    branches: ['main']
+    branches: ["main"]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
@@ -17,7 +17,7 @@ permissions:
 
 # Allow one concurrent deployment
 concurrency:
-  group: 'pages'
+  group: "pages"
   cancel-in-progress: true
 
 jobs:
@@ -29,12 +29,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Node
         uses: actions/setup-node@v6
         with:
           node-version: lts/*
-          cache: 'npm'
+          cache: "npm"
       - name: Install dependencies
         run: npm ci
       - name: Build
@@ -45,7 +45,7 @@ jobs:
         uses: actions/upload-pages-artifact@v4
         with:
           # Upload dist folder
-          path: './dist'
+          path: "./dist"
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4

.github/workflows/test.yml

@@ -0,0 +1,33 @@
+name: Run tests
+
+# Remove default permissions of GITHUB_TOKEN for security
+# https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs
+permissions: {}
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.number || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Node
+        uses: actions/setup-node@v6
+        with:
+          node-version: lts/*
+          cache: "npm"
+      - run: npm ci
+
+      - name: Run tests
+        run: npm run test

.gitignore

@@ -7,10 +7,14 @@ yarn-error.log*
 pnpm-debug.log*
 lerna-debug.log*
 
+# Dependencies
 node_modules
+
+# Build artifacts
 dist
 dist-ssr
 *.local
+*.tsbuildinfo
 
 # Editor directories and files
 .vscode/*

eslint.config.js

@@ -16,7 +16,7 @@ export default defineConfig([
       reactRefresh.configs.vite,
     ],
     languageOptions: {
-      ecmaVersion: 2020,
+      ecmaVersion: 'latest',
       globals: globals.browser,
       parserOptions: {
         ecmaVersion: 'latest',