V3 to V4 migration guide?

[tylerblox]

• Are you running the latest version?
• Have you included sample input, output, error, and expected output?
• Have you checked if you are using correct configuration?
• Did you try online tool?

Description

Input

I'm wondering if there is any support for the methods from version 3 as I begin a migration to LTS version of fast-xml-parser

I use provider.getTraversalObj() in my project to extract the children nodes, and metatdata from xml files. Is there a solution where I can continue to use getTraversalObject to get the intermediate object, or alternatively, is there a guide for migrating away from using it?
Thank you in advance for the help/advice.

Code

const XMLParser = require('fast-xml-parser');


xmlTraverser = XMLParser.getTraversalObj(fileData, FAST_XML_OPTIONS);
const childNodes = Object.keys(xmlTraverser.child);
const rootNode = childNodes[0];

Output

In V4, the getTraversalObj function has been removed

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[amitguptagwl]

Hi @tylerblox ,
In version 4, there is a property to preserve the order of js properties. If it is set to true then you get intermediate object that you can use for traversal.

[tylerblox]

Hi @tylerblox , In version 4, there is a property to preserve the order of js properties. If it is set to true then you get intermediate object that you can use for traversal.

I'll try and play around with that a bit, adding that attribute to the config object didn't solve the problem by itself, but I'll see if I've missed something.

After checking on the XmlParser object created, there is no method on it called "getTraversalObject" even after adding the attribute preserveOrder

[amitguptagwl]

@tylerblox Sorry for the confusion what I meant to say is that "getTraversalObject" has been removed. Instead set preserve order to true to get intermediate object.

[tylerblox]

@tylerblox Sorry for the confusion what I meant to say is that "getTraversalObject" has been removed. Instead set preserve order to true to get intermediate object.

I see what you mean thank you, I also have a diff of the objects returned in both cases, so I am planning on making the migrations soon. I appreciate the responses greatly.