fix(core): update

ts/smarttime.units.ts

@@ -19,6 +19,9 @@ export let units = {
   minutes: (timesArg = 1) => {
     return timesArg * 60000;
   },
+  seconds: (timesArg = 1) => {
+    return timesArg * 1000;
+  },
 };
 
 export interface IUnitCombinationArg {
@@ -28,6 +31,7 @@ export interface IUnitCombinationArg {
   days?: number;
   hours?: number;
   minutes?: number;
+  seconds?: number;
 }
 
 export let getMilliSecondsFromUnits = (combinationArg: IUnitCombinationArg) => {
@@ -53,6 +57,9 @@ export let getMilliSecondsFromUnits = (combinationArg: IUnitCombinationArg) => {
   if (combinationArg.minutes) {
     addMilliSeconds(units.minutes(combinationArg.minutes));
   }
+  if (combinationArg.seconds) {
+    addMilliSeconds(units.seconds(combinationArg.seconds));
+  }
 
   return timeInMilliseconds;
 };