give me one point

student/index.js

+const readline = require('readline');
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout,
+  prompt: 'สวัสดีคุณ'
+});
+
+rl.prompt();
+
+rl.on('line', (line) => {
+  switch (line.trim()) {
+    case 'hello':
+      console.log('world!');
+      break;
+    default:
+      console.log(`สวัสดีคุณ  '${line.trim()}'`);
+      break;
+  }
+  rl.prompt();
+})