Update README.md

Add Vitest to JavaScript section (data.json)

README.md

@@ -385,6 +385,7 @@ If you would like to be guided through how to contribute to a repository on GitH
 - [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint) _(label: good first issue)_ <br> Monorepo for all the tooling which enables ESLint to support TypeScript.
 - [Visual Studio Code](https://github.com/Microsoft/vscode) _(label: good first issue)_ <br> A code editor redefined and optimized for building and debugging modern web and cloud applications.
 - [Vite](https://github.com/vitejs/vite) _(label: good first issue)_ <br> Next generation frontend tooling. It's fast! Alternative to Create React App
+- [Vitest](https://github.com/vitest-dev/vitest) _(label: good first issue)_ <br> A blazing fast unit test framework powered by Vite.
 
 
 ## Contribute

data.json

@@ -914,6 +914,15 @@
             ],
             "description": "Minimalistic Vue-powered static site generator"
         },
+        {
+            "name": "Vitest",
+            "link": "https://github.com/vitest-dev/vitest",
+            "label": "good first issue",
+            "technologies": [
+                "TypeScript"
+            ],
+            "description": "A blazing fast unit test framework powered by Vite."
+        },
         {
             "name": "appsmith",
             "link": "https://github.com/appsmithorg/appsmith",