/** The plan id + redirect URLs a checkout needs. */
export declare interface StartCheckoutInput {
    readonly plan: string;
    readonly successUrl: string;
    readonly cancelUrl: string;
}

/**
 * The caller injects the rpc binding — the generated client's
 * `billing.startCheckout` action. Kept as a plain function type so the web
 * subpath has zero dependency on the rpc client package; the app wires its
 * generated binding in.
 */
export declare type StartCheckoutRpc = (input: StartCheckoutInput) => Promise<{
    readonly url: string;
}>;

/**
 * React hook that drives provider-hosted checkout. Pass the generated
 * `billing.startCheckout` rpc binding; the hook tracks pending/error and
 * performs the redirect on success.
 *
 * ```tsx
 * const { startCheckout, pending } = useStartCheckout(rpc.billing.startCheckout)
 * <button disabled={pending} onClick={() => startCheckout({
 *   plan: 'pro', successUrl: location.href, cancelUrl: location.href,
 * })}>Upgrade</button>
 * ```
 */
export declare const useStartCheckout: (rpc: StartCheckoutRpc) => UseStartCheckoutResult;

export declare interface UseStartCheckoutResult {
    /** Kick off checkout: calls the rpc, then redirects to the provider URL. */
    readonly startCheckout: (input: StartCheckoutInput) => Promise<void>;
    /** True while the rpc is in flight. */
    readonly pending: boolean;
    /** The last error, or null. */
    readonly error: Error | null;
}

export { }