import * as React from 'react';
import { DefaultTheme, MD3DarkTheme } from 'react-native-paper';
import Color from 'color';
export type PaperTheme = typeof MD3DarkTheme | typeof DefaultTheme;
export declare function useLatest<T>(value: T): React.MutableRefObject<T>;
export declare function useHeaderBackgroundColor(): string;
export declare function useHeaderColorIsLight(): boolean;
export declare function useHeaderTextColor(): string;
export declare function useTextColorOnPrimary(): string;
export declare function range(start: number, end: number): number[];
export declare function lightenBy(color: Color, ratio: number): Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | any | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}>;
export declare function darkenBy(color: Color, ratio: number): Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | Color<string | number | any | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}> | ArrayLike<number> | {
    [key: string]: any;
}>;
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