Add test CI

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+   build:
+      runs-on: ubuntu-latest
+      steps:
+         - uses: actions/checkout@v4
+
+         - name: Setup Node.js
+           uses: actions/setup-node@v3
+           with:
+              node-version: 'lts/*'
+              registry-url: 'https://registry.npmjs.org'
+
+         - name: Install dependencies
+           run: npm install
+
+         - name: Build with Vite
+           run: npm run build
+
+         - name: Test with Vitest
+           run: npm run test

README.md

@@ -1,4 +1,5 @@
 # change-case-all
+![CI](https://github.com/btxtiger/change-case-all/actions/workflows/ci.yml/badge.svg)
 [![npm](https://img.shields.io/npm/v/change-case-all.svg)](https://www.npmjs.com/package/change-case-all)
 [![npm](https://img.shields.io/npm/dm/change-case-all.svg)](https://www.npmjs.com/package/change-case-all)
 [![npm](https://img.shields.io/librariesio/release/npm/change-case-all)](https://www.npmjs.com/package/change-case-all)