diff --git a/configs/base.js b/configs/base.js
index 9fa31de..c593da7 100644
--- a/configs/base.js
+++ b/configs/base.js
@@ -8,6 +8,10 @@ import eslintPluginUnicorn from 'eslint-plugin-unicorn';
 
 const baseConfig = [
 	js.configs.recommended,
+	{
+		// annoys af.
+		'capitalized-comments': 'off',
+	},
 
 	importPlugin.flatConfigs.recommended,
 	{
diff --git a/configs/jest.js b/configs/jest.js
index 2619cec..2aa8d60 100644
--- a/configs/jest.js
+++ b/configs/jest.js
@@ -1,2 +1,4 @@
-const jestConfig = [];
+import jest from 'eslint-plugin-jest';
+
+const jestConfig = [jest.configs['flat/recommended']];
 export default jestConfig;
diff --git a/configs/vitest.js b/configs/vitest.js
index 2b89b7a..f1158b0 100644
--- a/configs/vitest.js
+++ b/configs/vitest.js
@@ -1,2 +1,4 @@
-const vitestConfig = [];
+import vitest from '@vitest/eslint-plugin';
+
+const vitestConfig = [vitest.configs.flat.recommended];
 export default vitestConfig;
diff --git a/package.json b/package.json
index 7ec7109..509af16 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,7 @@
 		"@eslint/markdown": "^6.2.1",
 		"@typescript-eslint/eslint-plugin": "^8.15.0",
 		"@typescript-eslint/parser": "^8.15.0",
+		"@vitest/eslint-plugin": "^1.1.10",
 		"eslint-config-prettier": "^9.1.0",
 		"eslint-config-xo": "^0.46.0",
 		"eslint-config-xo-react": "^0.27.0",
diff --git a/yarn.lock b/yarn.lock
index be52bd5..7bdc56a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -925,6 +925,7 @@ __metadata:
     "@react-hookz/eslint-formatter-gha": "npm:^2.0.1"
     "@typescript-eslint/eslint-plugin": "npm:^8.15.0"
     "@typescript-eslint/parser": "npm:^8.15.0"
+    "@vitest/eslint-plugin": "npm:^1.1.10"
     eslint: "npm:^9.15.0"
     eslint-config-prettier: "npm:^9.1.0"
     eslint-config-xo: "npm:^0.46.0"
@@ -1452,6 +1453,23 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@vitest/eslint-plugin@npm:^1.1.10":
+  version: 1.1.10
+  resolution: "@vitest/eslint-plugin@npm:1.1.10"
+  peerDependencies:
+    "@typescript-eslint/utils": ">= 8.0"
+    eslint: ">= 8.57.0"
+    typescript: ">= 5.0.0"
+    vitest: "*"
+  peerDependenciesMeta:
+    typescript:
+      optional: true
+    vitest:
+      optional: true
+  checksum: 10c0/f69be2a1067976e452225ff8e2189dbfc9ebd6717be8013260372e8b724775d58849afd9e1a85449ba8f454ef0f69c8a200743b413fbe0e357b984c18e79bd5f
+  languageName: node
+  linkType: hard
+
 "JSONStream@npm:^1.3.5":
   version: 1.3.5
   resolution: "JSONStream@npm:1.3.5"