Bump to core-3.0.0, move to vitest, support ESM modules (#587)

biome.json

@@ -1,5 +1,5 @@
 {
-    "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+    "$schema": "https://biomejs.dev/schemas/2.3.13/schema.json",
     "vcs": {
         "enabled": false,
         "clientKind": "git",
@@ -7,7 +7,7 @@
     },
     "files": {
         "ignoreUnknown": false,
-        "ignore": ["node_modules/**/*", "dist/"]
+        "includes": ["**", "!**/node_modules/**/*", "!**/dist/"]
     },
     "formatter": {
         "enabled": true,
@@ -17,9 +17,9 @@
         "indentWidth": 4,
         "lineWidth": 120
     },
-    "organizeImports": { "enabled": true },
+    "assist": { "actions": { "source": { "organizeImports": "on" } } },
     "linter": {
-        "enabled": false,
+        "enabled": true,
         "rules": {
             "recommended": true
         }