export interface EyeDropperOpenOptions {
    /**
     * @see https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal
     */
    signal?: AbortSignal;
}
export interface EyeDropper {
    new (): EyeDropper;
    open: (options?: EyeDropperOpenOptions) => Promise<{
        sRGBHex: string;
    }>;
    [Symbol.toStringTag]: 'EyeDropper';
}
export interface UseEyeDropperOptions {
    /**
     * Initial sRGBHex.
     *
     * @default ''
     */
    initialValue?: string;
}
/**
 * Reactive [EyeDropper API](https://developer.mozilla.org/en-US/docs/Web/API/EyeDropper_API)
 *
 * @see https://sveltuse.pages.dev/docs/functions/useEyeDropper
 * @param initialValue string
 */
export declare function useEyeDropper(options?: UseEyeDropperOptions): {
    isSupported: import("svelte/store").Readable<boolean>;
    sRGBHex: import("svelte/store").Writable<string>;
    open: (openOptions?: EyeDropperOpenOptions) => Promise<{
        sRGBHex: string;
    } | undefined>;
};
export type UseEyeDropperReturn = ReturnType<typeof useEyeDropper>;