/**
 * Error thrown when creating a backup fails.
 */
export declare class BackupError extends Error {
    readonly _tag = "BackupError";
    path: string;
    constructor(path: string, options?: ErrorOptions);
}
/**
 * Error thrown when a theme is not found.
 */
export declare class ThemeNotFoundError extends Error {
    readonly _tag = "ThemeNotFoundError";
    filename: string;
    constructor(filename: string, options?: ErrorOptions);
}
/**
 * Error thrown when a theme is not a TOML file.
 */
export declare class ThemeNotTOMLError extends Error {
    readonly _tag = "ThemeNotTOMLError";
    path: string;
    constructor(path: string, options?: ErrorOptions);
}
/**
 * Error thrown when no themes are found in a directory.
 */
export declare class NoThemesFoundError extends Error {
    readonly _tag = "NoThemesFoundError";
    path: string;
    constructor(path: string, options?: ErrorOptions);
}
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