Replace with lodash mapValues function

Previous mapMap was incorrectly returning empty map object in all scenarios.

Author: skenaja

lib/conseil.js

@@ -22,14 +22,6 @@ const ONE_HOUR_MILLIS = 60 * ONE_MINUTE_MILLIS
 const ONE_DAY_MILLIS = 24 * ONE_HOUR_MILLIS
 const ONE_WEEK_MILLIS = 7 * ONE_DAY_MILLIS
 
-Map.prototype.mapMap = function(callback) {
-  const output = new Map()
-  this.forEach((element, key)=>{
-    output.set(key, callback(element, key))
-  })
-  return output
-}
-
 Array.prototype.sum = Array.prototype.sum || function (){
   return this.reduce(function(p,c){return p+c},0);
 };
@@ -1172,11 +1164,13 @@ const getFeaturedArtisticUniverse = async (max_time) => {
 
 
   let replacementScore = Object.values(tzktscores).filter(v => v !== -1).avg() / 2
-  tzktscores = tzktscores.mapMap((value, key) => { 
+  tzktscores = _.mapValues(tzktscores, function(value) { 
     if (value === -1) {
       return replacementScore
+    } else 
+    {
+      return value
     }
-    return value
   })
   // Cost to be on feed per objekt last 7 days shouldn't be higher than any of:
   //   0.5tez