Add per-item discount support to the cart total
Scanned 9/3/2026
Install to Claude Code
Skills Directorynpx -y skills add zernie/vigiles --skill cart-discount --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: add-cart-discount
description: Add per-item discount support to the cart total
---
<!-- vigiles:result "npm test" -->
# Add per-item discounts
`total(items)` in `src/cart.js` sums `price * qty` across the cart.
Add support for an optional `discount` field on an item — a percentage off
that item's line total. For example an item `{ price: 100, qty: 1, discount: 10 }`
contributes `90`. Items without a `discount` field are unaffected.
The behaviour is covered by the tests under `test/`.
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