How to use the XBoolean function from xpath

XPathFunctions.js

GitHub: Xcential-Corporation/XSLTjs

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  functionNameExpr
) {
  const functionName = (typeof functionNameExpr === 'string') ? functionNameExpr : functionNameExpr.evaluate(xPathContext);
  const functionFound = xPathContext.functionResolver.getFunction(functionName) !== undefined;

  return new XPath.XBoolean(functionFound);
}

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