drawio-mcp-server/build/emitter_bus.js

Provides Draw.io services to MCP Clients

import { bus_reply_stream, bus_request_stream, } from "./types.js";
export function create_bus(log) {
    return function (emitter) {
        const listeners = [];
        const bus = {
            send_to_extension: (request) => {
                log.debug(`[bus] sending to Extension`, request);
                emitter.emit(bus_request_stream, request);
            },
            on_reply_from_extension: (event_name, reply) => {
                const listener = (emitter_data) => {
                    log.debug(`[bus] received from Extension`, emitter_data);
                    if (emitter_data && emitter_data.__event === event_name) {
                        reply(emitter_data);
                    }
                };
                emitter.on(bus_reply_stream, listener);
                listeners.push(reply);
            },
        };
        return bus;
    };
}