/**
 * CLI Logger with colored output
 * Issue #96: npm install CLI support
 */
export interface LoggerOptions {
    /** Enable verbose/debug output */
    verbose?: boolean;
}
/**
 * CLI Logger with colored output
 */
export declare class CLILogger {
    private verbose;
    constructor(options?: LoggerOptions);
    /**
     * Log info message
     */
    info(message: string): void;
    /**
     * Log success message with checkmark
     */
    success(message: string): void;
    /**
     * Log warning message
     */
    warn(message: string): void;
    /**
     * Log error message to stderr
     */
    error(message: string): void;
    /**
     * Log debug message (only when verbose is enabled)
     */
    debug(message: string): void;
    /**
     * Print blank line
     */
    blank(): void;
    /**
     * Print formatted header
     */
    header(title: string): void;
    /**
     * Format duration in human-readable format
     */
    static formatDuration(seconds: number): string;
}
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