/**
 * Options for creating a checkout with a custom line item.
 */
export interface CustomLineItemCheckoutOptions {
    /**
     * The name of the product for the custom line item.
     * @example "My Custom Product"
     */
    productName: string;
    /**
     * A description for the price, which will be displayed to the customer.
     * @example "per month"
     */
    priceDescription: string;
    /**
     * An array of policies related to this custom item.
     * Each policy should have a title and content.
     */
    policies?: {
        content: string;
        title: string;
    }[];
    /**
     * The URL to redirect the user to after the checkout is successfully completed.
     */
    postFlowUrl?: string;
    /**
     * The quantity of the product.
     * @default 1
     */
    quantity?: number;
    /**
     * The price of the product.
     */
    price: string;
    /**
     * The currency of the product. It will only take effect after configuring the payment provider to accept this currency.
     */
    currency: string;
}
/**
 * Creates a factory function to generate checkout URLs for custom line items with a fixed price.
 * This is useful when you have a single product or service with a known price,
 * and you want to dynamically create checkout sessions for it.
 *
 * @param factoryOpts - The options for the factory, including the price.
 * @returns A function that takes `CustomLineItemCheckoutOptions` and returns a checkout URL.
 */
export declare function getCustomLineItemCheckoutURLFactory(factoryOpts: CustomLineItemCheckoutOptions): () => Promise<string>;