findClosestSlug.ts

const findClosestSlug = (requestedSlug: string, currentSlugs: string[]): string | null => {
 const requestedKeywords = extractKeywords(requestedSlug);
 let bestMatch = {
   slug: '',
   score: 0,
   matchedKeywords: 0
 };

 for (const slug of currentSlugs) {
   const slugKeywords = extractKeywords(slug);
   const matchResult = evaluateMatch(requestedKeywords, slugKeywords);

   if (matchResult.score > bestMatch.score) {
     bestMatch = {
       slug,
       score: matchResult.score,
       matchedKeywords: matchResult.matches
     };
   }
 }

 return bestMatch.score >= 0.4 ? bestMatch.slug : null;
};