Consider simplifying this complex logical expression.

Open

  } else if (
    xmlData.length > i + 9 &&
    xmlData[i + 1] === '[' &&
    xmlData[i + 2] === 'C' &&
    xmlData[i + 3] === 'D' &&

Consider simplifying this complex logical expression.

Open

  } else if (
    xmlData.length > i + 8 &&
    xmlData[i + 1] === 'D' &&
    xmlData[i + 2] === 'O' &&
    xmlData[i + 3] === 'C' &&

Function constructor has 33 lines of code (exceeds 25 allowed). Consider refactoring.

Open

  constructor(options){
    this.options = options;
    this.currentNode = null;
    this.tagsNodeStack = [];
    this.docTypeEntities = {};

Function replaceEntitiesValue has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.

Open

    replaceEntitiesValue(val){
        if(typeof val === "string" && val.length > 0){
            for(let entityName in this.docTypeEntities){
                const entity = this.docTypeEntities[entityName];
                val = val.replace( entity.regx, entity.val);

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Function validateAttributeString has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.

Open

function validateAttributeString(attrStr, options) {
  //console.log("start:"+attrStr+":end");

  //if(attrStr.trim().length === 0) return true; //empty string

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Function replaceEntitiesValue has a Cognitive Complexity of 11 (exceeds 5 allowed). Consider refactoring.

Open

    replaceEntitiesValue(val){
        if(typeof val === "string" && val.length > 0){
            for(let entityName in this.docTypeEntities){
                const entity = this.docTypeEntities[entityName];
                val = val.replace( entity.regx, entity.val);

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Function readUptoCloseTag has 28 lines of code (exceeds 25 allowed). Consider refactoring.

Open

readUptoCloseTag(stopStr) { //stopStr: "</tagname"
    const inputLength = this.buffer.length;
    const stopLength = stopStr.length;
    const stopBuffer = Buffer.from(stopStr);
    let stopIndex = 0;

Function callback has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

  const callback = function(xmlData) {
    let output = '';
    if (validate) {
      const parser = new XMLParser(options);
      output = parser.parse(xmlData,validate);

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Function parse has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

    parse(xmlData,validationOption){
        if(typeof xmlData === "string"){
        }else if( xmlData.toString){
            xmlData = xmlData.toString();
        }else{

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Function attr_to_str has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

function attr_to_str(attrMap, options) {
    let attrStr = "";
    if (attrMap && !options.ignoreAttributes) {
        for (let attr in attrMap) {
            if(!attrMap.hasOwnProperty(attr)) continue;

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Function replaceEntitiesValue has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

Open

const replaceEntitiesValue = function(val){

  if(this.options.processEntities){
    for(let entityName in this.docTypeEntities){
      const entity = this.docTypeEntities[entityName];

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Function readPiExp has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function readPiExp(parser) {
  let inSingleQuotes = false;
  let inDoubleQuotes = false;
  let i;
  let EOE = false;

Function tagExpWithClosingIndex has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function tagExpWithClosingIndex(xmlData, i, closingChar = ">"){
  let attrBoundary;
  let tagExp = "";
  for (let index = i; index < xmlData.length; index++) {
    let ch = xmlData[index];

Function readAttributeStr has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function readAttributeStr(xmlData, i) {
  let attrStr = '';
  let startChar = '';
  let tagClosed = false;
  for (; i < xmlData.length; i++) {

Function readUptoCloseTag has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

  readUptoCloseTag(stopStr) { //stopStr: "</tagname"
    const inputLength = this.buffer.length;
    const stopLength = stopStr.length;
    let stopIndex = 0;
    //0: non-matching, 1: matching stop string, 2: matching closing

Function readTagExp has 26 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function readTagExp(xmlData,i, removeNSPrefix, closingChar = ">"){
  const result = tagExpWithClosingIndex(xmlData, i+1, closingChar);
  if(!result) return;
  let tagExp = result.data;
  const closeIndex = result.index;

Consider simplifying this complex logical expression.

Open

    if(xmlData[i+1] === '!' &&
    xmlData[i+2] === 'E' &&
    xmlData[i+3] === 'N' &&
    xmlData[i+4] === 'T' &&
    xmlData[i+5] === 'I' &&

Function readPI has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

function readPI(xmlData, i) {
  const start = i;
  for (; i < xmlData.length; i++) {
    if (xmlData[i] == '?' || xmlData[i] == ' ') {
      //tagname

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Function match has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

  match(tagStack,node){
    if(this.stack[0].name !== "*"){
      if(this.stack.length !== tagStack.length +1) return false;
  
      //loop through tagPath and tagStack and match

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Function readSpecialTag has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

Open

    readSpecialTag(startCh){
      if(startCh == "!"){
        let nextChar = this.source.readCh();
        if (nextChar === null || nextChar === undefined) throw new Error("Unexpected ending of the source");
        

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