`unpairedTags` option does not work correctly with text nodes

[mohd-akram]

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• Have you included sample input, output, error, and expected output?
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Description

The unpairedTags option does not seem to behave correctly with text nodes.

Input

Code

const assert = require('assert/strict');

const { XMLParser, XMLBuilder } = require('fast-xml-parser');

const html = '<div>1<br>2<br></div>';
console.log(html);

const parsingOptions = {
  preserveOrder: true,
  unpairedTags: ['br'],
};
const parser = new XMLParser(parsingOptions);
const result = parser.parse(html);
console.log(JSON.stringify(result, null, 2));

const builderOptions = {
  preserveOrder: true,
  unpairedTags: ['br'],
}
const builder = new XMLBuilder(builderOptions);
const output = builder.build(result);
console.log(output);

assert.equal(output, html);

Output

[
  {
    "div": [
      {
        "#text": 1
      },
      {
        "br": [
          {
            "#text": 2
          }
        ]
      },
      {
        "br": []
      }
    ]
  }
]

<div>1<br><br></div>

expected data

[
  {
    "div": [
      {
        "#text": 1
      },
      {
        "br": []
      },
      {
        "#text": 2
      },
      {
        "br": []
      }
    ]
  }
]

<div>1<br>2<br></div>

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