adding sum helper

exports.tsx

@@ -1,10 +1,12 @@
 export { FieldLoading } from "@/comps/ui/field-loading";
 import { lazify, lazifyMany } from "@/utils/lazify";
 import __get from "lodash.get";
+import { sum } from "./utils/sum";
 export { guessLabel } from "./utils/guess-label";
 export { fetchLinkParams } from "./comps/form/field/type/TypeLink";
 export { prasi_gen } from "./gen/prasi_gen";
 
+export const _sum = sum;
 export const _get = __get;
 
 export const Accordion = lazify(

utils/sum.ts

@@ -0,0 +1,7 @@
+import get from "lodash.get";
+
+export const sum = (items: any[], keyName: string) => {
+  return items.reduce(function (a, b) {
+    return (Number(a) || 0) + (Number(get(b, keyName)) || 0);
+  }, 0);
+};