/**
 * Expression evaluation for conditions and mappings
 * Implements JMESPath for conditions and ${} pattern for mappings
 */
import type { ExecutionContext } from '@orchestr8/schema';
/**
 * Default security limits for expression evaluation
 */
declare const DEFAULT_SECURITY_LIMITS: {
    maxDepth: number;
    maxSize: number;
    timeout: number;
};
/**
 * Security limits interface
 */
export interface SecurityLimits {
    maxDepth?: number;
    maxSize?: number;
    timeout?: number;
}
/**
 * Dangerous prototype keys to block
 */
declare const PROTOTYPE_POLLUTION_KEYS: string[];
/**
 * Evaluate a JMESPath condition expression
 * @param expression The JMESPath expression
 * @param context The execution context
 * @param strictMode If true, throw validation errors for invalid expressions
 * @param limits Optional security limits to override defaults
 * @returns The evaluation result
 */
export declare function evaluateCondition(expression: string, context: ExecutionContext, strictMode?: boolean, limits?: SecurityLimits): boolean;
/**
 * Resolve mapping expressions with ${steps.*}, ${variables.*}, ${env.*} patterns
 * @param input The input object potentially containing expressions
 * @param context The execution context
 * @param limits Optional security limits to override defaults
 * @returns The resolved object
 */
export declare function resolveMapping(input: unknown, context: ExecutionContext, limits?: SecurityLimits): unknown;
/**
 * Clear the expression cache (useful for testing)
 */
export declare function clearExpressionCache(): void;
/**
 * Export security limits for testing
 */
export { DEFAULT_SECURITY_LIMITS as SECURITY_LIMITS, PROTOTYPE_POLLUTION_KEYS };
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