import type Stripe from 'stripe';
export declare class Coupon {
    #private;
    constructor(coupon: Stripe.Coupon);
    /**
     * Get the readable name for the Coupon.
     */
    name(): string;
    /**
     * Determine if the coupon is a percentage.
     */
    isPercentage(): boolean;
    /**
     * Get the discount percentage for the invoice.
     */
    percentOff(): number | null;
    /**
     * Get the amount off for the coupon.
     */
    amountOff(): string | null;
    /**
     * Get the raw amount off for the coupon.
     */
    rawAmountOff(): number | null;
    /**
     * Format the given amount into a displayable currency.
     */
    formatAmount(amount: number): string;
    /**
     * Get the Stripe Coupon instance.
     */
    asStripeCoupon(): Stripe.Coupon;
}