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conformance · v149

v149 · allow-payment-handlers-to-report-back-internal-errors — conformance probe

7 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://w3c.github.io/payment-request/#payment-handler-indicates-an-internal-error-algorithm chromestatus: #5942637229113344 generated 2026-06-01T08:15:14Z by conformance-author-v1-subagent
0
pass
0
fail
0
blocked
7
total
id contract kind verdict detail
payment-request-constructor-exists PaymentRequest is exposed on the window as a constructable interface. spec ↗ exists
payment-request-show-is-function PaymentRequest.prototype.show returns a Promise and is callable. spec ↗ typeof
dom-exception-constructor-exists DOMException is constructable so handlers can throw AbortError vs OperationError. spec ↗ exists
abort-error-name-round-trips A DOMException constructed with name 'AbortError' preserves the name (user-cancel signal). spec ↗ script
operation-error-name-round-trips A DOMException constructed with name 'OperationError' preserves the name (internal-error signal). spec ↗ script
payment-request-event-respond-with PaymentRequestEvent in a payment-handler service worker exposes respondWith for returning errors. spec ↗ script
service-worker-container-exists navigator.serviceWorker is present so a payment handler can be registered. spec ↗ exists