90 lines
3.0 KiB
JavaScript
90 lines
3.0 KiB
JavaScript
/**
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* Shared utilities for MCP tools that communicate with the browser.
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* This module provides a common infrastructure for request-response
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* communication between MCP endpoints and browser sessions via HMR.
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*/ "use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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0 && (module.exports = {
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DEFAULT_BROWSER_REQUEST_TIMEOUT_MS: null,
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createBrowserRequest: null,
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handleBrowserPageResponse: null
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});
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function _export(target, all) {
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for(var name in all)Object.defineProperty(target, name, {
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enumerable: true,
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get: all[name]
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});
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}
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_export(exports, {
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DEFAULT_BROWSER_REQUEST_TIMEOUT_MS: function() {
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return DEFAULT_BROWSER_REQUEST_TIMEOUT_MS;
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},
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createBrowserRequest: function() {
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return createBrowserRequest;
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},
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handleBrowserPageResponse: function() {
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return handleBrowserPageResponse;
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}
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});
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const _nanoid = require("next/dist/compiled/nanoid");
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const DEFAULT_BROWSER_REQUEST_TIMEOUT_MS = 5000;
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const pendingRequests = new Map();
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function createBrowserRequest(messageType, sendHmrMessage, getActiveConnectionCount, timeoutMs) {
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const connectionCount = getActiveConnectionCount();
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if (connectionCount === 0) {
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return Promise.resolve([]);
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}
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const requestId = `mcp-${messageType}-${(0, _nanoid.nanoid)()}`;
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const responsePromise = new Promise((resolve, reject)=>{
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const timeout = setTimeout(()=>{
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const pending = pendingRequests.get(requestId);
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if (pending && pending.responses.length > 0) {
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resolve(pending.responses);
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} else {
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reject(Object.defineProperty(new Error(`Timeout waiting for response from frontend. The browser may not be responding to HMR messages.`), "__NEXT_ERROR_CODE", {
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value: "E825",
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enumerable: false,
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configurable: true
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}));
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}
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pendingRequests.delete(requestId);
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}, timeoutMs);
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pendingRequests.set(requestId, {
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responses: [],
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expectedCount: connectionCount,
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resolve: resolve,
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reject,
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timeout
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});
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});
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sendHmrMessage({
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type: messageType,
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requestId
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});
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return responsePromise;
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}
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function handleBrowserPageResponse(requestId, data, url) {
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if (!url) {
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throw Object.defineProperty(new Error('URL is required in MCP browser response. This is a bug in Next.js.'), "__NEXT_ERROR_CODE", {
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value: "E824",
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enumerable: false,
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configurable: true
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});
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}
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const pending = pendingRequests.get(requestId);
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if (pending) {
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pending.responses.push({
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url,
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data
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});
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if (pending.responses.length >= pending.expectedCount) {
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clearTimeout(pending.timeout);
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pending.resolve(pending.responses);
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pendingRequests.delete(requestId);
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}
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}
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}
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//# sourceMappingURL=browser-communication.js.map
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