How to use

mapValues

function

in

Object

_(process.env)
 // Only muck with prefix_ variables
 .pickBy((value, key) => _.includes(key, prefix))
 // Prep the keys for consumption
 .mapKeys((value, key) => _.camelCase(_.trimStart(key, prefix)))
 // If we have a JSON string as a value, parse that and assign its sub-keys
 .mapValues(exports.tryConvertJson)
 // Resolve the lodash wrapper
 .value()

const omitByDeep = function (obj, predicate) {
 if (!predicate) {
  throw new Error('Predicate is missing.');
 }

 if (!_.isObject(obj) || _.isArray(obj)) {
  return obj;
 }

 return _(obj).
  omitBy(predicate).
  mapValues(value => omitByDeep(value, predicate)).
  value();
}

_(cmdArgs)
        .omit(_.isUndefined)
        .omit(_.isNull)
        .mapValues((property)=>{ 
          return  property === 'true'  ? true  :
              property === 'false' ? false :
                          property
        }).value()