OptionalareTrue once every hosted field holds valid input.
OptionalfieldsPer-field validity event registration ("cardNumber" | "expiryDate" | "cvv").
OptionalshowLoads the configured payment methods into their containers. Resolves with
one entry per method, carrying error when that method failed to
initialize; rejects only when none initialized.
Structural subset of Paysafe.js (hosted iframe fields). Injected in tests, loaded from hosted.paysafe.com in browsers. The field-event surface is optional — SDK builds without it simply never fire onChange (degrade, not break) — and so is show(): an instance without it is used as set up.