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@shoppexio/checkout-core

v0.1.0

Published

Framework-agnostic core for Shoppex checkout sessions: browser-facing session contract and gateway mapping shared by hosted, inline, and headless checkout surfaces

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Links

Git

Maintainers

florainx9florainx9

Keywords

shoppexcheckoutheadlesspaymentsecommerce

Readme

@shoppexio/checkout-core

Framework-agnostic core for Shoppex checkout sessions.

This package holds the single browser-facing session contract and the gateway → contract mapping shared across every checkout surface:

  • apps/checkout — hosted + inline (iframe) buyer UI
  • @shoppexio/checkout-js/headless — merchant-owned UI

It contains no UI and no provider SDK code — only types and the mapping logic that must stay identical across surfaces, so there is exactly one payment engine and one contract (see docs/architecture/adr/ADR-0021-headless-checkout-sessions.md).

What's here

  • contract/payment-session.ts — CheckoutPaymentSession discriminated union (embed | redirect | address | balance | manual) + authoritative CheckoutPaymentStatus.
  • contract/checkout-session.ts — session create/read/start HTTP shapes.
  • mapping/map-payment-session.ts — mapToCheckoutPaymentSession() maps each gateway's provider-specific payload into the union. Fail-fast: an unsatisfiable class throws CheckoutSessionMappingError (never a silent empty session).

Design rule

Render against kind, not against the provider name. redirect, address, balance, and manual are provider-independent; only embed carries a provider sub-discriminator because each SDK (Stripe / Square / SumUp / PayPal) needs structurally different mount data.