/**
 * File path completer for @ mentions
 */
export interface FilePathSuggestion {
    path: string;
    relativePath: string;
}
export declare class FilePathCompleter {
    private fileCache;
    private lastCacheTime;
    private readonly cacheRefreshInterval;
    private readonly workspaceRoot;
    constructor(workspaceRoot?: string);
    /**
     * Extract @ fragment from input text
     * Returns null if @ is not a valid trigger
     */
    extractFragment(text: string): string | null;
    /**
     * Get file suggestions based on the fragment
     */
    getSuggestions(fragment: string): FilePathSuggestion[];
    /**
     * Refresh file cache if needed
     */
    private refreshCacheIfNeeded;
    /**
     * Scan workspace for files
     */
    private scanFiles;
    /**
     * Simple fuzzy matching algorithm
     * Returns a score (higher is better, 0 means no match)
     */
    private fuzzyMatch;
}
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