import { Flow, Step, DependencyGraph } from '../types';
import { Logger } from '../util/logger';
import { SafeExpressionEvaluator } from '../expression-evaluator/safe-evaluator';
export declare class DependencyResolver {
    private flow;
    private expressionEvaluator;
    private logger;
    private internalVars;
    private loopVars;
    constructor(flow: Flow, expressionEvaluator: SafeExpressionEvaluator, logger: Logger);
    /**
     * Get the execution order for all steps in the flow
     */
    getExecutionOrder(): Step[];
    /**
     * Get all dependencies for a given step
     */
    getDependencies(stepName: string): string[];
    /**
     * Get all steps that depend on a given step
     */
    getDependents(stepName: string): string[];
    /**
     * Build a dependency graph for all steps in the flow
     */
    private buildDependencyGraph;
    /**
     * Find all dependencies for a step
     */
    private findStepDependencies;
    /**
     * Extract step references from an expression
     */
    private extractReferences;
    /**
     * Perform a topological sort on the dependency graph
     */
    private topologicalSort;
    /**
     * Get a UI-friendly representation of the dependency graph
     */
    getDependencyGraph(): DependencyGraph;
}