Verabatch

Recipe in, batch recorded, compliant label out — for small-batch makers.

What's here

Folder	What it holds
lib/core	The engine every market shares: unit conversions, recipe math, ingredient order, net contents, lettering size, lot numbers, claims checking, quick-entry parsing. Knows nothing about cosmetics.
lib/packs/cosmetics	The first market pack: product types, the ingredient dictionary, variety questions (which chamomile?), claim rules and the lettering table.
tests	spec.test.ts holds every test case from the v1 spec; core.test.ts covers edge cases.

Adding a market (baked goods, pet treats...) means adding a folder under lib/packs, not changing lib/core.

Rules

• Amounts are stored exactly as typed ("1/2", not 0.5).
• Every number on a label comes from a rule with a test. Change the test first.
• Ingredient and variety names in the cosmetics pack are drafts (source: "draft", checkedOn: null) until checked against CosIng, and later wINCI.

Commands

npm install
npm test           # run all tests
npm run typecheck  # TypeScript check