import type { Ref } from '@stacksjs/stx';
/**
 * Unwrap a MaybeRef to its raw value.
 */
export declare function unref<T>(val: MaybeRef<T>): T;
/**
 * Unwrap a MaybeRefOrGetter to its raw value.
 */
export declare function toValue<T>(val: MaybeRefOrGetter<T>): T;
/**
 * Check if a value is a Ref.
 */
export declare function isRef<T>(val: MaybeRef<T>): val is Ref<T>;
/**
 * No-op function for default callbacks.
 */
export declare function noop(): void;
/**
 * Get the default window, SSR-safe.
 */
export declare function defaultWindow(): Window | undefined;
/**
 * Get the default document, SSR-safe.
 */
export declare function defaultDocument(): Document | undefined;
/**
 * Get the default navigator, SSR-safe.
 */
export declare function defaultNavigator(): Navigator | undefined;
/**
 * Type helper for configurable window.
 */
export declare interface ConfigurableWindow {
  window?: Window
}
/**
 * Type helper for configurable document.
 */
export declare interface ConfigurableDocument {
  document?: Document
}
/**
 * A value that may be a raw value or a Ref.
 */
export type MaybeRef<T> = T | Ref<T>;
/**
 * A value that may be a raw value, a Ref, or a getter function.
 */
export type MaybeRefOrGetter<T> = T | Ref<T> | (() => T);