View difference between Paste ID: qNAJTsFf and QNQzr6AN

 function palindromeHunter([length, text]) {
     length = Number(length);
 
     let tokens = text.split(/[ \t_]+/g);
     let textToProcess = tokens.join("");
     let nonDelimiters = new Set();
     for(let ch of textToProcess) {
         nonDelimiters.add(ch);
     }
 
 
     let delimiterRegex = ("[" + Array.from(nonDelimiters).join("") + "]+").replace(/-/g, "\\-");
     let delimiters = text.split(new RegExp(delimiterRegex)).filter(d => d != "");
 
     for(let i =0; i<textToProcess.length; i++){
         let piece = textToProcess.substr(i,length);
         let validPieceRegex = /^[A-Za-z]+$/;
         let match = null;
         if(match = validPieceRegex.exec(piece)){
             if(match[0].length == length){
                 if(match[0] == match[0].split("").reverse().join("")){
                     textToProcess = textToProcess.replace(match[0], "*".repeat(match[0].length));
                 }
             }
         }
     }
 
     let processedText = [];
 
     for(let token of tokens){
         processedText.push(textToProcess.substr(0, token.length));
         textToProcess = textToProcess.substr(token.length);
     }
 
     let output = "";
     if(processedText.length > delimiters.length){
         for(let i=0; i<delimiters.length; i++){
             output += processedText[i] + delimiters[i];
         }
         output += processedText[processedText.length - 1];
     } else if (processedText.length < delimiters.length){
         for(let i=0; i<processedText.length; i++){
             output += delimiters[i] + processedText[i];
         }
         output += delimiters[delimiters.length - 1];
     } else {
         for(let i=0; i<delimiters.length; i++){
-            if(text[0] == "" || text[0] == "\t" || text[0] == "_") {
+            if(text[0] == " " || text[0] == "\t" || text[0] == "_") {
                 output += delimiters[i] + processedText[i];
             } else {
                 output += processedText[i] + delimiters[i];
             }
         }
     }
 
     console.log(output);
 }