export interface ScanResult {
    /** ISO timestamp when the scan was performed. */
    scannedAt: string;
    /** Absolute path of the scanned workspace root. */
    workspaceRoot: string;
    /** Absolute paths to .sln / .slnx files found anywhere under workspaceRoot. */
    solutionFiles: string[];
    /** Absolute paths to .csproj files discovered via solution references. */
    csprojFiles: string[];
    /** Absolute paths to every Directory.Packages.props found. */
    directoryPackagesProps: string[];
    /** Absolute paths to every Directory.Build.props found. */
    directoryBuildProps: string[];
    /** Absolute paths to every Directory.Build.targets found. */
    directoryBuildTargets: string[];
    /** Sorted, deduped union of every referenced package name. */
    packages: string[];
    /** Non-fatal issues encountered during the scan (e.g. csproj referenced but missing). */
    warnings: string[];
}
/**
 * Walk the workspace recursively, collecting every `.sln`, `.slnx`,
 * `Directory.Packages.props`, `Directory.Build.props`, and
 * `Directory.Build.targets` file. Parse each for package references and
 * return a deduped union.
 *
 * Never throws — per-file read errors are pushed into `warnings` and the
 * scan continues.
 */
export declare function scanWorkspace(workspaceRoot: string): Promise<ScanResult>;
/** Write the scan result to `<cacheDir>/solution-scan.json` atomically. */
export declare function writeScanCache(cacheDir: string, result: ScanResult): Promise<string>;
/**
 * Read the cached scan result, if present. Returns null when the file is
 * missing or unreadable — callers should treat that as "no scan yet".
 */
export declare function readScanCache(cacheDir: string): Promise<ScanResult | null>;
/** Absolute path of the scan-cache file for a given cacheDir. */
export declare function scanCachePath(cacheDir: string): string;
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