/**
 * Utility functions for working with Grepr job graphs.
 *
 * This module provides helper functions for:
 * - Identifying different types of operations (sources, sinks, etc.)
 * - Parsing and manipulating job graph edges
 * - Traversing the job graph to find related vertices
 * - Generating test identifiers
 *
 * All functions work with the OpenAPI-generated types to ensure type safety.
 */
import { SchemaOperation } from '../openapi/openApiTypes.js';
/**
 * Checks if a source vertex supports record limiting.
 *
 * Some source operations (like Iceberg table sources and Grepr internal sources)
 * support a 'limit' parameter to restrict the number of records read, which is
 * useful for batch testing.
 *
 * @param vertex - The operation to check
 * @returns true if the vertex supports limiting
 */
export declare function canLimit(vertex: SchemaOperation): boolean;
/**
 * Parses a job graph edge string into source and target vertex names.
 *
 * Edges are represented as strings in the format "source -> target".
 * Or "source:out -> target:in".
 * This function splits the edge and validates the format.
 *
 * @param edge - The edge string to parse (e.g., "source -> target")
 * @returns A tuple of [source, target] vertex/port names
 * @throws Error if the edge format is invalid
 */
export declare function parseEdge(edge: string): {
    sourceVertex: string;
    sourcePort: string;
    targetVertex: string;
    targetPort: string;
};
/**
 * Generates a unique test identifier.
 *
 * Creates a unique ID for test runs using a combination of timestamp and random string.
 * Format: test_{timestamp}_{random}
 *
 * @returns A unique test identifier string
 */
export declare function generateUUID(): string;
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