markdown-editor-mcp/dist/custom-stdio.js

MCP server for markdown editing and management

import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import process from "node:process";
/**
 * Extended StdioServerTransport that filters out non-JSON messages.
 * This prevents the "Watching /" error from crashing the server.
 */
export class FilteredStdioServerTransport extends StdioServerTransport {
    constructor() {
        // Create a proxy for stdout that only allows valid JSON to pass through
        const originalStdoutWrite = process.stdout.write;
        process.stdout.write = function (buffer) {
            // Only intercept string output that doesn't look like JSON
            if (typeof buffer === 'string' && !buffer.trim().startsWith('{')) {
                return true; //process.stderr.write(buffer);
            }
            return originalStdoutWrite.apply(process.stdout, arguments);
        };
        super();
        // Log initialization to stderr to avoid polluting the JSON stream
        process.stderr.write(`[desktop-commander] Initialized FilteredStdioServerTransport\n`);
    }
}