/**
 * Toast: transient notification messages. A `ToastProvider` holds the queue and
 * renders a viewport; `useToast()` enqueues messages from anywhere inside the
 * provider. The queue mechanics come from the active adapter's `toast` slot: the
 * zero-dependency builtin by default, swappable to Sonner / react-hot-toast via
 * `UIAdapterProvider`. The visual surface + option types live in `toast-parts.tsx`
 * (re-exported here); this file is the thin, adapter-routed public entry.
 *
 * @module react/components/ui/toast
 *
 * @example
 * ```tsx
 * import { ToastProvider, useToast } from "veryfront/ui";
 *
 * function SaveButton() {
 *   const { toast } = useToast();
 *   return (
 *     <button
 *       type="button"
 *       onClick={() =>
 *         toast({
 *           title: "Saved",
 *           description: "Your changes are live.",
 *           variant: "success",
 *           action: { label: "Undo", onClick: () => undefined },
 *         })}
 *     >
 *       Save
 *     </button>
 *   );
 * }
 *
 * export function App() {
 *   return (
 *     <ToastProvider>
 *       <SaveButton />
 *     </ToastProvider>
 *   );
 * }
 * ```
 */
import * as React from "react";
import type { ToastProviderProps, ToastState, ToastViewportProps } from "./adapter/contract.js";
export { Toast, type ToastAction, ToastClose, ToastDescription, type ToastFn, type ToastOptions, type ToastProps, ToastTitle, type ToastVariant, } from "./toast-parts.js";
export type { ToastProviderProps, ToastViewportProps } from "./adapter/contract.js";
/**
 * Holds the toast queue (via the active adapter: builtin by default) and mounts
 * the viewport. Wrap the part of the app that needs notifications.
 */
export declare function ToastProvider({ children, duration, maxToasts, viewport }: ToastProviderProps): React.ReactElement;
export declare namespace ToastProvider {
    var displayName: string;
}
/** Render the active adapter's viewport for `<ToastProvider viewport="manual">`. */
export declare function ToastViewport(props: ToastViewportProps): React.ReactElement;
export declare namespace ToastViewport {
    var displayName: string;
}
/**
 * Returns `{ toast, dismiss }`. Call `toast(options)` to enqueue (returns the new
 * id), `toast.custom((id) => node)` for a fully custom toast, and `dismiss(id)` to
 * remove one early. Must be used within a `ToastProvider`.
 */
export declare function useToast(): ToastState;
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