Add tax calculation

2026-07-25 14:51:54 -07:00
1 changed files with 10 additions and 0 deletions
@@ -0,0 +1,10 @@
 import { totalCents, type CartItem, type Discount } from './cart'
 export function totalWithTaxCents(
  items: CartItem[],
  taxRatePercent: number,
  discount?: Discount,
 ): number {
  const base = totalCents(items, discount)
  return base + base * (taxRatePercent / 100)
 }