/**
 * Lightweight file logger for the AgentWorkforce CLI.
 *
 * Modeled on Agent Relay's logger (relay/packages/utils/src/logger.ts):
 * - Writes structured lines to a log file so diagnostics never pollute the
 *   terminal the user is staring at while a persona launches.
 * - Configurable via environment variables, read at call time for late binding.
 * - No external dependencies.
 *
 * Default log file: `<workforce home>/logs/cli.log`
 *   (i.e. `~/.agentworkforce/workforce/logs/cli.log`).
 * Overrides:
 *   AGENTWORKFORCE_LOG_FILE   absolute path to the log file ('' or '-' → stderr)
 *   AGENTWORKFORCE_LOG_LEVEL  DEBUG | INFO | WARN | ERROR (default INFO)
 *   AGENTWORKFORCE_LOG_JSON   '1' to emit JSON lines instead of text
 */
export type LogLevel = 'DEBUG' | 'INFO' | 'WARN' | 'ERROR';
/**
 * Create a logger for a specific component.
 * @param component - Component name (e.g. 'launch-metadata', 'persona-install').
 */
export declare function createLogger(component: string): {
    debug: (msg: string, extra?: Record<string, unknown>) => void;
    info: (msg: string, extra?: Record<string, unknown>) => void;
    warn: (msg: string, extra?: Record<string, unknown>) => void;
    error: (msg: string, extra?: Record<string, unknown>) => void;
};
/** Absolute path of the active log file, or `undefined` when logging to stderr. */
export declare function activeLogFile(): string | undefined;
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