refact: @/utils/totalCost.tx

src/utils/totalCost.ts

@@ -0,0 +1,18 @@
+import { STORAGE_NAME_TOTALCOST } from "@/const";
+
+export function addTotalCost(cost: number) {
+  let totalCost = getTotalCost();
+  totalCost += cost;
+  localStorage.setItem(STORAGE_NAME_TOTALCOST, `${totalCost}`);
+}
+
+export function getTotalCost(): number {
+  let totalCost = parseFloat(
+    localStorage.getItem(STORAGE_NAME_TOTALCOST) ?? "0"
+  );
+  return totalCost;
+}
+
+export function clearTotalCost() {
+  localStorage.setItem(STORAGE_NAME_TOTALCOST, `0`);
+}