feat(tests): add basic arithmetic functions and corresponding tests

- Implemented `add` and `subtract` functions in multiple packages (web, ui, utils).
- Created unit tests for these functions using Vitest in respective test files.
- Updated turbo.json to include a new test pipeline for coverage and watch mode.

.eslintrc.js

@@ -1,5 +0,0 @@
-/** @type {import("eslint").Linter.Config} */
-module.exports = {
-  root: true,
-  extends: ["@repo/eslint-config/index.js"],
-};

apps/docs-dev/package.json

@@ -24,7 +24,7 @@
         "@storybook/react": "^8.2.6",
         "@storybook/react-vite": "^8.2.6",
         "@vitejs/plugin-react": "^5.1.2",
-        "eslint": "^8.57.1",
+        "eslint": "^8.57.0",
         "serve": "^14.2.1",
         "storybook": "^8.2.6",
         "typescript": "5.5.4",

apps/web/package.json

@@ -7,7 +7,9 @@
     "dev": "vite --clearScreen false",
     "build": "tsc && vite build",
     "preview": "vite preview",
-    "lint": "eslint \"src/**/*.ts\""
+    "lint": "eslint \"src/**/*.ts\"",
+    "test": "vitest run",
+    "test:watch": "vitest --watch"
   },
   "dependencies": {
     "@repo/ui": "workspace:*",
@@ -26,6 +28,7 @@
     "@vitejs/plugin-react": "^5.1.2",
     "eslint": "^8.57.1",
     "typescript": "5.5.4",
-    "vite": "^5.1.4"
+    "vite": "^5.1.4",
+    "vitest": "^4.0.17"
   }
 }

apps/web/src/apps/modules/testing-example/add.ts

@@ -0,0 +1 @@
+export const add = (a: number, b: number) => a + b;

apps/web/src/apps/modules/testing-example/app-web-testing-example.test.ts

@@ -0,0 +1,11 @@
+import { expect, test } from 'vitest';
+import { add } from './add';
+import { subtract } from './subtract';
+
+test('adds 1 + 2 to equal 3', () => {
+  expect(add(1, 2)).toBe(3);
+});
+
+test('subtracts 2 - 1 to equal 1', () => {
+  expect(subtract(2, 1)).toBe(1);
+});

apps/web/src/apps/modules/testing-example/subtract.ts

@@ -0,0 +1 @@
+export const subtract = (a: number, b: number) => a - b;

package.json

@@ -8,10 +8,10 @@
     "dev:web": "turbo run dev --filter=web",
     "dev:docs-dev": "turbo run dev --filter=docs-dev",
     "lint": "turbo run lint",
-    "format": "prettier --write \"**/*.{ts,tsx,md}\""
+    "format": "prettier --write \"**/*.{ts,tsx,md}\"",
+    "test": "turbo run test"
   },
   "devDependencies": {
-    "eslint": "^8.57.0",
     "prettier": "^3.2.5",
     "turbo": "^2.7.2"
   },

packages/configs/eslint/package.json

@@ -3,6 +3,7 @@
   "version": "0.0.0",
   "license": "MIT",
   "files": [
+    "index.js",
     "library.js",
     "react.js",
     "storybook.js"

packages/ui/package.json

@@ -7,11 +7,13 @@
   },
   "license": "MIT",
   "scripts": {
-    "lint": "eslint \"**/*.ts\""
+    "lint": "eslint \"**/*.ts\"",
+    "test": "vitest run",
+    "test:watch": "vitest --watch"
   },
   "dependencies": {
-    "@tailwindcss/vite": "^4.1.18",
     "@repo/utils": "workspace:*",
+    "@tailwindcss/vite": "^4.1.18",
     "react": "^19.2.3",
     "react-dom": "^19.2.3",
     "tailwind-merge": "^3.4.0",
@@ -26,6 +28,7 @@
     "@vitejs/plugin-react": "^5.1.2",
     "eslint": "^8.57.1",
     "typescript": "5.5.4",
-    "vite": "^5.1.4"
+    "vite": "^5.1.4",
+    "vitest": "^4.0.17"
   }
 }

packages/ui/src/components/testing-example/add.ts

@@ -0,0 +1 @@
+export const add = (a: number, b: number) => a + b;

packages/ui/src/components/testing-example/subtract.ts

@@ -0,0 +1 @@
+export const subtract = (a: number, b: number) => a - b;

packages/ui/src/components/testing-example/ui-testing-example.test.ts

@@ -0,0 +1,11 @@
+import { expect, test } from 'vitest';
+import { add } from './add';
+import { subtract } from './subtract';
+
+test('adds 1 + 2 to equal 3', () => {
+  expect(add(1, 2)).toBe(3);
+});
+
+test('subtracts 2 - 1 to equal 1', () => {
+  expect(subtract(2, 1)).toBe(1);
+});

packages/utils/package.json

@@ -6,7 +6,9 @@
   },
   "license": "MIT",
   "scripts": {
-    "lint": "eslint \"**/*.ts\""
+    "lint": "eslint \"**/*.ts\"",
+    "test": "vitest run",
+    "test:watch": "vitest --watch"
   },
   "dependencies": {
     "crypto-js": "^4.2.0",
@@ -17,6 +19,7 @@
     "@repo/typescript-config": "workspace:*",
     "@types/crypto-js": "^4.2.2",
     "eslint": "^8.57.1",
-    "typescript": "5.5.4"
+    "typescript": "5.5.4",
+    "vitest": "^4.0.17"
   }
 }

packages/utils/src/testing-example/add.ts

@@ -0,0 +1 @@
+export const add = (a: number, b: number) => a + b;

packages/utils/src/testing-example/subtract.ts

@@ -0,0 +1 @@
+export const subtract = (a: number, b: number) => a - b;

packages/utils/src/testing-example/utils-testing-example.test.ts

@@ -0,0 +1,11 @@
+import { expect, test } from 'vitest';
+import { add } from './add';
+import { subtract } from './subtract';
+
+test('adds 1 + 2 to equal 3', () => {
+  expect(add(1, 2)).toBe(3);
+});
+
+test('subtracts 2 - 1 to equal 1', () => {
+  expect(subtract(2, 1)).toBe(1);
+});

turbo.json

@@ -29,6 +29,22 @@
     "dev": {
       "cache": false,
       "persistent": true
+    },
+    "test": {
+      "dependsOn": [
+        "^test"
+      ],
+      "inputs": [
+        "$TURBO_DEFAULT$"
+      ],
+      "outputs": [
+        "coverage/**",
+        ".vitest/**"
+      ]
+    },
+    "test:watch": {
+      "cache": false,
+      "persistent": true
     }
   }
 }