feat(payment): PAYPAL-6645 Tech PoC [FE]: Pay by Invoice checkout — frontend implementation approach

[serhiiFilkovskyi]

What/Why?

Jira: PAYPAL-6645

Rollout/Rollback

Pay by Invoice checkout — front-end implementation approach [POC]

Testing

bcp_pay_by_invoice_succsess.mp4

[serhiiFilkovskyi]

remove after bigcommerce/bigpay-client-js#473 will be merged

[Copilot]

Pull request overview

This PR introduces a Proof-of-Concept frontend integration path for a new “Pay by Invoice” method under BigCommerce Payments by adding a dedicated payment strategy and ensuring the core payment request maps the method to the provider gateway expected by BigPay.

Changes:

• Remap bigcommerce_payments_invoices to the bigcommerce_payments provider gateway when building the payment request body.
• Add a new BigCommercePaymentsInvoicesPaymentStrategy and register/export it from the BigCommerce Payments integration package.
• Introduce (and export) initialization options types for the new invoices strategy.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/core/src/payment/payment-request-transformer.ts	Adds a remap so the invoices method sends paymentMethod.id = bigcommerce_payments to align with BigPay expectations.
packages/core/src/payment/payment-request-transformer.spec.ts	Adds unit coverage for the new payment method id remap behavior.
packages/bigcommerce-payments-integration/src/index.ts	Exposes the new invoices strategy and its initialize options type via the package entry point.
packages/bigcommerce-payments-integration/src/bigcommerce-payments-invoices/create-bigcommerce-payments-invoices-payment-strategy.ts	Registers the invoices strategy as a resolvable module for bigcommerce_payments_invoices.
packages/bigcommerce-payments-integration/src/bigcommerce-payments-invoices/bigcommerce-payments-invoices-payment-strategy.ts	Implements a minimal invoices payment strategy (initialize + submit order/payment).
packages/bigcommerce-payments-integration/src/bigcommerce-payments-invoices/bigcommerce-payments-invoices-payment-initialize-options.ts	Adds initialization option types for the invoices strategy.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.