Fuzzysort Implementation

function transform(events) {
    
 //traverse the JSON structure and replace PII fields with obfuscations for fuzzy matched keys
 for( var i = 0; i < events.length; i++) {
     
     event = events[i];
     walk(event,['SSN','Social Security Number', 'social security no.','social sec num', 'ssnum'],'XXX-XX-XXXX');

 }
    
 return events;
}

function walk(obj,targetKeyArray,newValue) {

 for (var key in obj) {
     
     value = obj[key]
     if (value && (typeof value == 'object')){ //recurse till leaf is reached
         walk(value,targetKeyArray,newValue)
     }
     fs = fuzzysortNew()
     matches = fs.go(key,targetKeyArray,{allowTypo: true})
     if ((typeof matches != "undefined") && Array.isArray(matches)) {
         if (matches.length > 0) {
             obj[key] = newValue;
         }
     }
 }