Incorrect parsing entity <

[AllanZhengYP]

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Description

The predefined entity seems to be parsed twice. < is expected to be parsed to $lt;. However, it is parsed again to <

Input

<SimpleScalarPropertiesInputOutput>
  <stringValue>&amp;lt;</stringValue>
</SimpleScalarPropertiesInputOutput>

Code

import { XMLParser } from "fast-xml-parser";

const encoded = `<SimpleScalarPropertiesInputOutput>
  <stringValue>&amp;lt;</stringValue>
</SimpleScalarPropertiesInputOutput>`;
const parser = new XMLParser({})
const parsed = parser.parse(encoded);

console.log(JSON.stringify(parsed, null, 2));

Output

{
  "SimpleScalarPropertiesInputOutput": {
    "stringValue": "<"
  }
}

expected data

{
  "SimpleScalarPropertiesInputOutput": {
    "stringValue": "<"
  }
}

Would you like to work on this issue?

• Yes
• No
  If with sufficient guidance.

It seems to be caused by replacing the escaped value with entity regex in a loop:

fast-xml-parser/src/xmlparser/OrderedObjParser.js

Lines 372 to 375 in 443e8ed

	for(let entityName in this.lastEntities){
	const entity = this.lastEntities[entityName];
	val = val.replace( entity.regex, entity.val);
	}

[AllanZhengYP]

Hi @amitguptagwl, is there any update?