feat: switch to vitest

Author: thomasrockhu-codecov

.github/workflows/ci.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Set up Node 18
         uses: actions/setup-node@v3
         with:

app/calculator.test.js

@@ -1,9 +1,11 @@
-const {
+import { expect, test } from 'vitest'
+
+import {
   add,
-  subtract,
-  multiply,
   divide,
-} = require('./calculator');
+  multiply,
+  subtract,
+} from './calculator'
 
 test('add function', () => {
   expect(add(1, 2)).toBe(3);