typeref-mcp/dist/core/SimpleFileWatcher.js

TypeScript type inference and symbol navigation MCP server for Claude Code

import chokidar from 'chokidar';
import { FileChangeType } from '../interfaces.js';
export class SimpleFileWatcher {
    logger;
    watchers = new Map();
    constructor(logger) {
        this.logger = logger;
    }
    watch(path, callback) {
        if (this.watchers.has(path)) {
            this.logger.warn(`Already watching path: ${path}`);
            return;
        }
        this.logger.debug(`Starting to watch: ${path}`);
        const watcher = chokidar.watch(`${path}/**/*.{ts,tsx}`, {
            ignored: [
                /node_modules/,
                /\.d\.ts$/,
                /dist\//,
                /build\//,
                /coverage\//,
                /\.git\//,
            ],
            persistent: true,
            ignoreInitial: true,
            awaitWriteFinish: {
                stabilityThreshold: 100,
                pollInterval: 50,
            },
        });
        watcher.on('add', (filePath) => {
            this.logger.debug(`File added: ${filePath}`);
            callback(FileChangeType.Created, filePath);
        });
        watcher.on('change', (filePath) => {
            this.logger.debug(`File changed: ${filePath}`);
            callback(FileChangeType.Modified, filePath);
        });
        watcher.on('unlink', (filePath) => {
            this.logger.debug(`File deleted: ${filePath}`);
            callback(FileChangeType.Deleted, filePath);
        });
        watcher.on('error', (error) => {
            this.logger.error(`Watcher error for ${path}:`, error);
        });
        watcher.on('ready', () => {
            this.logger.info(`File watcher ready for: ${path}`);
        });
        this.watchers.set(path, watcher);
    }
    unwatch(path) {
        const watcher = this.watchers.get(path);
        if (watcher) {
            this.logger.debug(`Stopping watch for: ${path}`);
            watcher.close();
            this.watchers.delete(path);
        }
    }
    dispose() {
        this.logger.info(`Disposing file watcher (${this.watchers.size} watchers)`);
        for (const [path, watcher] of this.watchers.entries()) {
            this.logger.debug(`Closing watcher for: ${path}`);
            watcher.close();
        }
        this.watchers.clear();
    }
}
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