import type { IConstruct } from 'constructs';
import type { CfnResource } from '../cfn-resource';
/**
 * Depth-first iterator over the construct tree
 *
 * Replaces `node.findAll()` which both uses recursive function
 * calls and accumulates into an array, both of which are much slower
 * than this solution.
 */
export declare function iterateDfsPreorder(root: IConstruct): Generator<IConstruct, void, unknown>;
/**
 * Depth-first iterator over CFN resources under the given construct, including the construct itself
 *
 * Will break at stack boundaries that logically form a different deployment unit: nested Stacks,
 * NestedStacks and Stages.
 *
 * Replaces `node.findAll()` which both uses recursive function
 * calls and accumulates into an array, both of which are much slower
 * than this solution.
 */
export declare function iterateStackCfnResources(root: IConstruct): IterableIterator<CfnResource>;
/**
 * Depth-first iterator over the construct tree (post-order version)
 *
 * Replaces `node.findAll()` which both uses recursive function
 * calls and accumulates into an array, both of which are much slower
 * than this solution.
 */
export declare function iterateDfsPostorder(root: IConstruct): Generator<IConstruct, void, unknown>;
/**
 * Breadth-first iterator over the construct tree
 */
export declare function iterateBfs(root: IConstruct): Generator<{
    construct: IConstruct;
    parent: IConstruct | undefined;
}, void, unknown>;