Firebase Cloud Functions - XML data processing implementing Node.js
This might be a silly question, but I've encountered a strange issue with I'm stuck on something that should probably be simple... I've looked through the documentation and I'm still confused about I'm currently working on a Firebase Cloud Function that processes XML data sent from a webhook. The function triggers on an HTTP request and receives a payload with an XML format. I'm using the `xml2js` library to parse the incoming XML, but I keep running into issues with certain XML structures that contain nested elements. Here's a simplified version of my code: ```javascript const functions = require('firebase-functions'); const xml2js = require('xml2js'); exports.processXml = functions.https.onRequest((req, res) => { if (req.method !== 'POST') { return res.status(405).send('Method Not Allowed'); } const xml = req.body; // assuming the payload is directly accessible xml2js.parseString(xml, { explicitArray: false }, (err, result) => { if (err) { return res.status(400).send('Invalid XML'); } // Processing the XML data const nestedData = result.root.nestedElement; console.log(nestedData); res.status(200).send('XML processed successfully'); }); }); ``` When I send a well-formed XML payload like this: ```xml <root> <nestedElement> <item>Value 1</item> <item>Value 2</item> </nestedElement> </root> ``` It works fine, but if the XML has inconsistent casing or multiple nested elements like this: ```xml <Root> <NestedElement> <Item>Value 1</Item> <Item>Value 2</Item> </NestedElement> </Root> ``` I get an behavior or `undefined` when trying to access `result.root.nestedElement`. This inconsistency seems to be causing the issues, and I'm unsure how to handle it. I've tried using the `explicitArray` option in `xml2js`, but it didn’t help with the casing question. Could anyone shed light on how to handle XML with varying casing and provide a robust solution for parsing it without running into `undefined` values? Any suggestions or best practices for processing XML in this scenario would be greatly appreciated. For context: I'm using Javascript on macOS. This is part of a larger CLI tool I'm building. Any help would be greatly appreciated! How would you solve this? I'd really appreciate any guidance on this.