using vitest and doming some big refactor

.vscode/launch.json

@@ -0,0 +1,17 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "Vitest Current File",
+      "program": "${workspaceFolder}/node_modules/.bin/vitest",
+      "args": ["run", "${file}"],
+      "console": "integratedTerminal",
+      "skipFiles": ["<node_internals>/**", "**/node_modules/**"]
+    }
+  ]
+}

biome.json

@@ -3,11 +3,17 @@
   "organizeImports": {
     "enabled": true
   },
+
+  "files": {
+    "ignore": ["_tests/**/*.json", "launch.json"]
+  },
+
   "formatter": {
     "enabled": true,
     "indentStyle": "space",
     "lineWidth": 120
   },
+
   "linter": {
     "enabled": true,
     "rules": {
@@ -21,6 +27,7 @@
       }
     }
   },
+
   "javascript": {
     "formatter": {
       "quoteStyle": "single"