chore: migrate from TSDX to Vite, Vitest, and Biome

.github/workflows/main.yml

@@ -2,13 +2,11 @@ name: CI
 on: [push]
 jobs:
   build:
-    name: Build, lint, and test on Node ${{ matrix.node }} and ${{ matrix.os }}
-
-    runs-on: ${{ matrix.os }}
+    name: Build, lint, and test on Node ${{ matrix.node }}
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: ['18.x', '20.x', '22.x']
-        os: [ubuntu-latest, windows-latest, macOS-latest]
+        node: ['20.x', '22.x']
 
     steps:
       - name: Checkout repo
@@ -27,7 +25,7 @@ jobs:
         run: npm run lint
 
       - name: Test
-        run: npm test -- --ci --coverage --maxWorkers=2
+        run: npm test
 
       - name: Build
         run: npm run build

biome.json

@@ -0,0 +1,44 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.3.5/schema.json",
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true
+  },
+  "files": {
+    "ignoreUnknown": false,
+    "includes": ["**", "!**/dist", "!**/node_modules", "!**/coverage"]
+  },
+  "formatter": {
+    "enabled": true,
+    "formatWithErrors": false,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineEnding": "lf",
+    "lineWidth": 80
+  },
+  "assist": { "actions": { "source": { "organizeImports": "on" } } },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "style": {
+        "useImportType": "off"
+      },
+      "correctness": {
+        "useExhaustiveDependencies": "warn"
+      },
+      "suspicious": {
+        "noAssignInExpressions": "off"
+      }
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "trailingCommas": "es5",
+      "semicolons": "always",
+      "arrowParentheses": "asNeeded"
+    }
+  }
+}