/**
 * Serialization
 *
 * Safe JSON serialization handling circular references, functions, and errors.
 * Also provides action sanitization to remove sensitive data before storage/exposure.
 */
import type { Action } from "@gizmo-ai/runtime";
/**
 * Check if a value can be serialized to JSON
 *
 * Returns false for values containing functions, which can't be sent over SSE.
 * Used to auto-filter slices that can't be broadcast (e.g., agent.tools with execute functions).
 */
export declare function isSerializable(value: unknown): boolean;
/**
 * Safely serialize a value to JSON
 *
 * Handles:
 * - Circular references (replaced with "[Circular]")
 * - Functions (replaced with "[Function]")
 * - Error objects (serialized as { name, message, stack })
 */
export declare function safeSerialize(value: unknown): string;
/**
 * Remove sensitive data from actions before storing/exposing
 *
 * Recursively redacts known sensitive fields like passwords, API keys, tokens, etc.
 */
export declare function sanitizeAction(action: Action): Action;
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