import { Ref } from 'nativescript-vue';
export type BasicColorMode = 'light' | 'dark';
export type BasicColorSchema = BasicColorMode | 'auto';
export interface UseColorModeOptions<T extends string = BasicColorMode> {
    /**
     * The initial color mode
     *
     * @default 'auto'
     */
    initialValue?: T | BasicColorSchema;
    /**
     * Prefix when adding value to the attribute
     */
    modes?: T[] | BasicColorSchema[];
    /**
     * A custom handler for handle the updates.
     * When specified, the default behavior will be overridden.
     *
     * @default undefined
     */
    onChanged?: (mode: T | BasicColorMode) => void;
    /**
     * Key to persist the data into ApplicationSettings.
     *
     * Pass `null` to disable persistence
     *
     * @default 'nativevueuse-color-scheme'
     */
    storageKey?: string | null;
}
export declare function useColorMode<T extends string = BasicColorMode>(options?: UseColorModeOptions<T>): {
    schema: Ref<BasicColorSchema | T, BasicColorSchema | T>;
    system: Readonly<Ref<any, any>>;
    theme: Readonly<Ref<BasicColorMode | import("nativescript-vue").DeepReadonly<T>, BasicColorMode | import("nativescript-vue").DeepReadonly<T>>>;
    modes: Readonly<Ref<readonly string[], readonly string[]>>;
};