/**
 * Simple CLI Spinner
 * Issue #638: Report generation status visibility - CLI progress
 *
 * Lightweight spinner for stderr output without external dependencies.
 */
export interface Spinner {
    start(): void;
    stop(): void;
    succeed(message: string): void;
    fail(message: string): void;
}
type WriteFn = (text: string) => void;
/**
 * Create a simple spinner that writes to stderr.
 * @param message - The message to display alongside the spinner
 * @param writeFn - Optional custom write function (defaults to process.stderr.write)
 */
export declare function createSpinner(message: string, writeFn?: WriteFn): Spinner;
export {};
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