/**
 * Shared utilities used by executor.ts and pipeline-executor.ts.
 * Extracted to eliminate code duplication.
 */
/**
 * Evaluate a condition expression against resolved values.
 *
 * Supported syntax:
 *   'value == "expected"'      — equality
 *   'value != "expected"'      — inequality
 *   'value contains "substr"'  — substring match
 *   'value > 5'                — numeric greater than
 *   'value < 5'                — numeric less than
 *   'truthy_value'             — truthy (non-empty, non-false, non-zero)
 */
export declare function evaluateCondition(expr: string): boolean;
/**
 * Resolve {variable} placeholders in a string.
 *
 * Supports:
 *   {key}            — simple variable
 *   {key.subkey}     — compound key (e.g. {input.topic})
 *   {key|"fallback"} — fallback if key is undefined
 */
export declare function resolveVariables(template: string, vars: Record<string, string>): string;