export type ThemeName = 'dark' | 'light' | 'umber';
export type ThemeMode = ThemeName | 'auto';
export type AutoDetectableTheme = 'dark' | 'light';
export declare const THEME_NAMES: readonly ThemeName[];
export declare function getActiveTheme(): ThemeName;
export declare function applyTheme(name: ThemeName): void;
export declare function parseThemeMode(raw: string | undefined | null): ThemeMode | undefined;
export declare function detectTerminalTheme(): AutoDetectableTheme;
export declare function resolveTheme(mode: ThemeMode | undefined): ThemeName;
export declare function parseThemeFlag(raw: string): ThemeMode;
export declare function resolveThemeMode(flag: ThemeMode | undefined, config: ThemeMode | undefined): ThemeMode | undefined;