remove trailing whitespaces from object in javascript (works recursively)

shit2

var fixKeys = function(obj) {
  return Object.keys(obj).reduce(function(mem,key) {
    if(Array.isArray(obj[key])){
      mem[key.trim()] = obj[key].map(function(v){return v.trim()})
    }else{
      if(typeof obj[key] === 'object'){
        mem[key.trim()] = fixKeys(obj[key])
      }else{
        mem[key.trim()] = (obj[key]).trim()
      }
    }
    return mem    
  },{})
}