/**
 * Code Order — directory walker, size aggregation and metrics.
 *
 * Iterative (stack-based) traversal — never recurses so deep trees cannot blow
 * the call stack. Honors a hardcoded ignore list (node_modules, .git, dist…),
 * a hard cap on scanned files, and a max depth.
 *
 * The walker builds the full folder tree in one pass, aggregating size,
 * file/folder counts and max depth into each FolderNode as it unwinds.
 */
import type { AnalysisResult, FileNode, FolderNode, ProjectMetrics, TreeNode, Issue } from "./types.js";
/** Returns true for media/binary extensions that should not be flagged as oversized. */
declare function isBinaryExtension(ext: string): boolean;
/**
 * Walk the directory tree under `root` and return the full folder tree plus
 * flat lists of every file/folder encountered (used for metrics + heuristics).
 */
export declare function walkTree(root: string): Promise<{
    tree: FolderNode;
    allFiles: FileNode[];
    allFolders: string[];
    maxDepth: number;
    fileCount: number;
}>;
/**
 * Compute project-wide metrics from the flat file list.
 */
export declare function computeMetrics(allFiles: FileNode[], allFolders: string[], maxDepth: number): ProjectMetrics;
/** How many top items to keep in ranked lists. Exposed for tests. */
export declare const TOP_N: 15;
/** Exposed so heuristics.ts can use the same thresholds. */
export declare const HEURISTIC_LIMITS: {
    /** Stop scanning after this many files regardless of depth. */
    readonly maxFiles: 50000;
    /** Maximum directory depth the walker descends into. */
    readonly maxDepth: 20;
    /** A file larger than this (bytes) is flagged as oversized. */
    readonly largeFileThreshold: 100000;
    /** A directory deeper than this is flagged as deep nesting. */
    readonly deepNestingThreshold: 8;
    /** How many items to keep in "top N" lists. */
    readonly topN: 15;
};
export { isBinaryExtension };
/** Re-exported for the analyzer entry point. */
export type { AnalysisResult, Issue, TreeNode, FolderNode, FileNode };
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