/** Sanitize stack trace for telemetry: homedir, absolute-path collapse, secrets, truncation. */
export declare function sanitizeStack(stack: string | undefined): string;
/** Sanitize an error message for telemetry (homedir, secrets, truncation). */
export declare function sanitizeMessage(msg: string | undefined): string;
/**
 * Register global handlers for uncaughtException and unhandledRejection
 * that capture crash details before the process exits.
 *
 * Handlers are SYNCHRONOUS. Node does NOT await async uncaughtException handlers.
 * We queue the event synchronously; store-forward's process.on('exit') handler
 * persists it to disk. The next CLI invocation recovers and sends.
 */
export declare function installCrashReporter(): void;