Using JSON2HTML library in Swift

I want to refer json2html.js & jquery.json2html.js into my Swift 3.0 project. While I try invoking the json2html.transform using the JavaScriptCore class (in swift), it's returning undefined. Please refer to below code screenshot.

func loadJavascript()
    {
        let jsSource = jsfile1+jsfile2
    
        let data = try!String(contentsOfFile:Bundle.main.path(forResource:"data", ofType: "json")!)
        let transform = try!String(contentsOfFile:Bundle.main.path(forResource:"transform", ofType: "json")!)
        let context = JSContext()
        let fun = context?.evaluateScript(jsSource)
    
        let Func = fun?.objectForKeyedSubscript("json2html.transform")
        let Call = (Func?.call(withArguments: [data,transform]))
    
        /
        webView.loadHTMLString((Call?.toString())!, baseURL: nil)
    
    }

• jsfile1 & jsfile2 are the 2 JS file contents (JS and jQuery) for JSON2HTML converted to String
• I've saved the code for data and transform in 2 separate files(which work well without Swift). Those 2 files are data and transform (I have saved transform data inside JSON-anyhow will be converted to String)

Normal JS functions work fine while I tried it in the same way. Could anyone please help me out?

Also, is there any pre-built JSON2HTML library/framework built for Swift that could be integrated via CocoaPods into swift.

Awaiting for reply! Thanks a lot in advance.