complete till step 19

src/cli.js

@@ -0,0 +1,30 @@
+const readline = require('readline');
+const {executeSELECTQuery,executeDELETEQuery,executeINSERTQuery} = require('./index');
+
+const rl = readline.createInterface({
+    input: process.stdin,
+    output: process.stdout
+});
+
+rl.setPrompt('SQL> ');
+console.log('SQL Query Engine CLI. Enter your SQL commands, or type "exit" to quit.');
+
+rl.prompt();
+
+rl.on('line', async (line) => {
+    if (line.toLowerCase() === 'exit') {
+        rl.close();
+        return;
+    }
+
+    try {
+        // Execute the query - do your own implementation
+    }catch (error) {
+        console.error('Error:', error.message);
+    }
+
+    rl.prompt();
+}).on('close', () => {
+    console.log('Exiting SQL CLI');
+    process.exit(0);
+});

src/csvReader.js

@@ -1,5 +1,6 @@
 const fs = require('fs');
 const csv = require('csv-parser');
+const { parse } = require('json2csv');
 
 function readCSV(filePath) {
     const results = [];
@@ -17,5 +18,9 @@ function readCSV(filePath) {
     });
 }
 
-module.exports = readCSV;
+async function writeCSV(filename, data) {
+    const csv = parse(data);
+    fs.writeFileSync(filename, csv);
+}
 
+module.exports = {readCSV,writeCSV};