A small and simple JSON to XML converter.

Because I needed one small library, without any dependency and I needed it to treat arrays as repeating elements.

npm install jsonxml

Then, in your code:

const jsonxml = require('jsonxml')

let XMLstring = jsonxml(JSONObject, options)

JSONXML will transform this object

{
    "ListOfItems": {
        "Item": [
            {
                "a_key": "a string value",
                "b_key": 42
            },
            {
                "a_key": null,
                "RepeatItem": [
                    { "b_key": "another value" },
                    { "c_key": "" }
                ],
                "SubItem": {
                    "d_key": "last value"
                }
            }
        ]
    }
}

into this XML string

<ListOfItems>
  <Item>
    <a_key>a string value</a_key>
    <b_key>42</b_key>
  </Item>
  <Item>
    <a_key>null</a_key>
    <RepeatItem>
      <b_key>another value</b_key>
    </RepeatItem>
    <RepeatItem>
      <c_key></c_key>
    </RepeatItem>
    <SubItem>
      <d_key>last value</d_key>
    </SubItem>
  </Item>
</ListOfItems>

• As of now, only JSON-compatible types are supported. Those are: object, array, string, number, boolean and null.
• Literals are outputted as-is.
• The options object supports the following properties:
  • header: if true, will output a standard XML header; if a string, will be used as header.
  • root: a string to be used as a root tag.
  • indent: if true, will prettyprint the output with tabs; if a string, will be used to indent the prettyprinted output.

• Parse tag attributes.
• Handle CDATA.
• Handle more JS types such as Date or Map.
• Optionally Escape strings.
• Optionally use arrays as ordered objects.
• Optionally output empty tags.
• Optionally change the way null is outputted.
• Validate XML tag names.
• Some leftover error checking.