Convert XML API Responses to JSON in Node.js

const axios = require('axios');
const { parseStringPromise } = require('xml2js');

async function fetchAndConvertXmlToJson(xmlApiUrl) {
  try {
    // In a real scenario, xmlApiUrl would be something like 'https://example.com/api/data.xml'
    // For this demonstration, we'll simulate a fetch to a mock XML string.
    const mockXmlResponse = `
    <bookstore>
      <book category="cooking">
        <title lang="en">Everyday Italian</title>
        <author>Giada De Laurentiis</author>
        <year>2005</year>
        <price>30.00</price>
      </book>
      <book category="web">
        <title lang="en">Learning XML</title>
        <author>Erik T. Ray</author>
        <year>2003</year>
        <price>39.95</price>
      </book>
    </bookstore>
    `;
    
    // For a real API call, use: const response = await axios.get(xmlApiUrl);
    // For this example, we'll directly use the mock XML string.
    // const xmlData = response.data;
    const xmlData = mockXmlResponse;

    // Convert XML string to JavaScript object (JSON equivalent)
    const jsonData = await parseStringPromise(xmlData, { explicitArray: false, mergeAttrs: true });

    console.log('Original XML:
', xmlData);
    console.log('
Converted JSON:
', JSON.stringify(jsonData, null, 2));

    return jsonData;
  } catch (error) {
    console.error('Error fetching or parsing XML:', error.message);
    throw error;
  }
}

// To run this example, you need to install axios and xml2js:
// npm install axios xml2js

// Example Usage:
fetchAndConvertXmlToJson('https://mock.api.com/data.xml') // The URL here is just a placeholder for the demo
  .then(json => console.log('
Successfully converted XML to JSON.'))
  .catch(err => console.error('Conversion failed:', err));