epos-utils

TypeScript packages for building and encoding ESC/POS receipt data.

Packages

• @piqy/epos-ast defines the receipt tree types and optional runtime validation.
• @piqy/epos-codepages provides ESC/POS character tables. Applications include only the tables that they import.
• @piqy/epos-encoder converts a receipt tree to ESC/POS printer bytes with Effect.

Development

This repository requires Node.js 22 or newer and pnpm.

corepack enable
pnpm install
pnpm build
pnpm check
pnpm test
pnpm check:tree-shaking