/**
 * Custom error types with recovery hints for user-friendly output.
 */
export declare class GhlsError extends Error {
    readonly hint?: string | undefined;
    readonly exitCode: number;
    constructor(message: string, hint?: string | undefined, exitCode?: number);
}
export declare class NotARepoError extends GhlsError {
    constructor();
}
export declare class NoRemoteError extends GhlsError {
    constructor();
}
export declare class GhCliNotFoundError extends GhlsError {
    constructor();
}
export declare class GhNotAuthenticatedError extends GhlsError {
    constructor();
}
export declare class SquashMergeWarning extends GhlsError {
    constructor();
}
export declare class StackIntegrityError extends GhlsError {
    constructor(detail: string);
}
export declare class ConflictError extends GhlsError {
    constructor(files: string[]);
}
export declare class SizeExceededError extends GhlsError {
    constructor(lines: number, limit: number);
}
/**
 * Wrap the top-level command handler to catch GhlsError and print nicely.
 */
export declare function handleError(err: unknown): never;
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