Filesystem MCP Server

import fs from 'fs/promises'; import path from 'path'; import { minimatch } from 'minimatch'; import { validatePath } from './validation.js'; export interface SearchOptions { excludePatterns?: string[]; caseSensitive?: boolean; maxDepth?: number; fileTypes?: string[]; } export async function searchFilesWithValidation( rootPath: string, pattern: string, allowedDirectories: string[], options: SearchOptions = {} ): Promise<string[]> { const { excludePatterns = [], caseSensitive = false, maxDepth, fileTypes } = options; const results: string[] = []; async function search(currentPath: string, depth = 0) { if (maxDepth !== undefined && depth > maxDepth) return; const entries = await fs.readdir(currentPath, { withFileTypes: true }); for (const entry of entries) { const fullPath = path.join(currentPath, entry.name); try { await validatePath(fullPath); const relativePath = path.relative(rootPath, fullPath); const shouldExclude = excludePatterns.some(excludePattern => minimatch(relativePath, excludePattern, { dot: true }) ); if (shouldExclude) continue; const matchOptions = { dot: true, nocase: !caseSensitive }; if (minimatch(relativePath, pattern, matchOptions)) { if (!fileTypes || fileTypes.some(type => entry.name.endsWith(type))) { results.push(fullPath); } } if (entry.isDirectory()) { await search(fullPath, depth + 1); } } catch { continue; } } } await search(rootPath); return results; }