/**
 * Phase E — per-rail payment surface readiness and payable method counting.
 * Shared across backend public-config / customer sales-point APIs and frontends.
 */
export interface PaymentSurfaceMethodReadiness {
    readonly enabled: boolean;
    readonly ready: boolean;
    readonly verified: boolean;
}
export interface PaymentSurfaceReadinessMethods {
    readonly bankTransfer: PaymentSurfaceMethodReadiness;
    readonly gateway: PaymentSurfaceMethodReadiness;
    readonly gatewayHandoff?: PaymentSurfaceMethodReadiness;
    readonly terminal?: PaymentSurfaceMethodReadiness;
    readonly cash?: PaymentSurfaceMethodReadiness;
    /** Customer wallet rails (Apple/Google Pay) — gated client-side by `customerWalletPaymentsV1_1`. */
    readonly wallet?: PaymentSurfaceMethodReadiness;
}
export interface PaymentSurfaceReadiness {
    readonly payableVerifiedMethodCount: number;
    readonly methods: PaymentSurfaceReadinessMethods;
}
export declare function derivePaymentSurfaceMethodVerified(input: {
    readonly ready: boolean;
    readonly notVerified: boolean;
}): boolean;
/** §10.E.2 — count when enabled, ready, and verified (or ready-only when verification not required). */
export declare function isMethodPayableForCount(method: PaymentSurfaceMethodReadiness, requireVerified: boolean): boolean;
/** Kiosk cash rail — staff mode gate only; no wiring verification requirement. */
export declare function isCashMethodPayableForCount(method: PaymentSurfaceMethodReadiness): boolean;
export declare function countCustomerPayableVerifiedMethods(methods: PaymentSurfaceReadinessMethods, input: {
    readonly requireVerified: boolean;
    readonly walletPaymentsEnabled: boolean;
}): number;
export declare function countKioskPayableVerifiedMethods(methods: PaymentSurfaceReadinessMethods, requireVerified: boolean): number;
export declare function buildPaymentSurfaceReadiness(input: {
    readonly methods: PaymentSurfaceReadinessMethods;
    readonly payableVerifiedMethodCount: number;
}): PaymentSurfaceReadiness;
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