gatsby/cache-dir/commonjs/socketIo.js

Blazing fast modern site generator for React

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
exports.__esModule = true;
exports.default = socketIo;
exports.registerPath = registerPath;
exports.unregisterPath = unregisterPath;
var _socket = _interopRequireDefault(require("socket.io-client"));
var _errorOverlayHandler = require("./error-overlay-handler");
let socket = null;
function socketIo() {
  if (process.env.NODE_ENV !== `production`) {
    if (!socket) {
      // Try to initialize web socket if we didn't do it already
      try {
        // force websocket as transport
        socket = (0, _socket.default)({
          transports: [process.env.GATSBY_SOCKET_IO_DEFAULT_TRANSPORT]
        });

        // when websocket fails, we'll try polling
        socket.on(`reconnect_attempt`, () => {
          socket.io.opts.transports = [`polling`, `websocket`];
        });
        socket.on(`message`, msg => {
          if (msg.type === `overlayError`) {
            if (msg.payload.message) {
              (0, _errorOverlayHandler.reportError)(msg.payload.id, msg.payload.message);
            } else {
              (0, _errorOverlayHandler.clearError)(msg.payload.id);
            }
            ___emitter.emit(msg.type, msg.payload);
          }
        });

        // Prevents certain browsers spamming XHR 'ERR_CONNECTION_REFUSED'
        // errors within the console, such as when exiting the develop process.
        socket.on(`disconnect`, () => {
          console.warn(`[socket.io] Disconnected from dev server.`);
        });
      } catch (err) {
        console.error(`Could not connect to socket.io on dev server.`);
      }
    }
    return socket;
  } else {
    return null;
  }
}

// Tell websocket-manager.js the new path we're on.
// This will help the backend prioritize queries for this
// path.
function registerPath(path) {
  socket.emit(`registerPath`, path);
}

// Unregister the former path
function unregisterPath(path) {
  socket.emit(`unregisterPath`, path);
}
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