/**
 * Stripe Promotion Code validation result entity.
 * This is a transient entity used for API responses, not stored in the database.
 */
export type StripeCouponDuration = "forever" | "once" | "repeating";
/**
 * Narrow a Stripe coupon duration to the durations this system understands.
 *
 * stripe@22 widens response enums with `OtherString`, so a value the Stripe API adds in
 * future still typechecks as `Coupon.Duration`. Anything outside the known set is reported
 * as absent rather than returned as a value the response type claims is impossible.
 */
export declare function toStripeCouponDuration(value: string | undefined): StripeCouponDuration | undefined;
export interface StripePromotionCode {
    id: string;
    valid: boolean;
    promotionCodeId?: string;
    code: string;
    discountType?: "percent_off" | "amount_off";
    discountValue?: number;
    currency?: string;
    duration?: StripeCouponDuration;
    durationInMonths?: number;
    errorMessage?: string;
}
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