export interface ScanResult {
    /** All files found. */
    files: Set<string>;
    /** New added files from last scanning. */
    added: Set<string>;
    /** Modified files from last scanning. */
    modified: Set<string>;
    /** Removed files from last scanning. */
    removed: Set<string>;
    /** Missing patterns that throw ENOENT exception. */
    missing: Set<string>;
}
interface SourceCache {
    /** Non glob patterns. */
    patterns: string[];
    /** Glob patterns. */
    globs: string[];
}
export declare enum MatchState {
    INCLUDE = 0,
    EXCLUDE = 1,
    UNKNOW = 2
}
export declare class Sources {
    readonly context: string;
    readonly fs: any;
    /** Include patterns cache, must be absolute and non negative. */
    readonly includes: SourceCache;
    /**
     * Exclude patterns cache, must be absolute and non negative.
     * The negative patterns also live here.
     */
    readonly excludes: SourceCache;
    /** Files found and their timestamp. */
    readonly files: Map<string, number>;
    /**
     * @param patterns - List of files, directories or glob patterns.
     * @param context - An absolute directory used to resolve the relative pattern
     * to absolute.
     * @param fs - User provided file system, defaults to fs-extra.
     */
    constructor(patterns: string | string[], context: string, fs?: any);
    add(patterns: string | string[]): void;
    clear(): void;
    /**
     * @param pattern - A file, directory or glob pattern that absolute or
     * relative from the context.
     */
    match(pattern: string): MatchState;
    /**
     * @param patterns - List of patterns, defaults scan all.
     */
    scan(patterns?: string | string[]): ScanResult;
}
export {};