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Solve

This site describes solve-engine as it is on main: 2.43.0, which npm does not have yet. npm installs 2.40.0, so a page may show an answer that version does not give yet.

SHOPPING_PACKAGE

const SHOPPING_PACKAGE: IEnginePackage;

Defined in: packages/engine/src/packages/shopping/ShoppingPackage.ts:69

Comparison shopping (issue #275): A vs B says which is cheaper and by how much, comparing lower-is-cheaper. The discount and unit-price maths a shopper wants is already ordinary arithmetic, £80 - 20% - 10% stacks discounts and £3 / 500g is a per-gram price, so this package adds the one piece that was missing: putting two of those side by side. On by default and removable.