universal-hot-reload/lib/server/watchServerChanges.js

Hot reload client and server webpack bundles for the ultimate development experience

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = exports.watchServerChangesWithDefaultConfig = void 0;

var _path = require("path");

var _webpack = _interopRequireDefault(require("webpack"));

var _clearRequire = _interopRequireDefault(require("clear-require"));

var _initHttpServer = _interopRequireDefault(require("./initHttpServer"));

var _generateDefaultConfig = _interopRequireDefault(require("./generateDefaultConfig"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

/**
 * Watches server for changes, recompile and restart express
 */
var watchServerChanges = function watchServerChanges(serverConfig) {
  var initialLoad = true;
  var httpServerInitObject; // contains the httpServer itself and socket references

  var bundlePath = (0, _path.join)(serverConfig.output.path, serverConfig.output.filename);
  var serverCompiler = (0, _webpack["default"])(serverConfig); // use this to debug
  // const serverCompiler = webpack(serverConfig, (err, stats) => {
  //   if (err || stats.hasErrors()) {
  //     if (err) {
  //       console.error(err.stack || err);
  //       if (err.details) {
  //         console.error(err.details);
  //       }
  //       return;
  //     }
  //     const info = stats.toJson();
  //     if (stats.hasErrors()) {
  //       console.error(info.errors);
  //     }
  //
  //     if (stats.hasWarnings()) {
  //       console.warn(info.warnings);
  //     }
  //   }
  // });

  var compilerOptions = {
    aggregateTimeout: 300,
    // wait so long for more changes
    poll: true // use polling instead of native watchers

  }; // compile server side code

  serverCompiler.watch(compilerOptions, function (err) {
    if (err) {
      console.log("Server bundling error: ".concat(JSON.stringify(err)));
      return;
    }

    (0, _clearRequire["default"])(bundlePath);

    if (!initialLoad) {
      httpServerInitObject.httpServer.close(function () {
        httpServerInitObject = (0, _initHttpServer["default"])(bundlePath);

        if (httpServerInitObject) {
          initialLoad = false;
          console.log("Server bundled & restarted ".concat(new Date()));
        } else {
          // server bundling error has occurred
          initialLoad = true;
        }
      }); // Destroy all open sockets
      // eslint-disable-next-line no-restricted-syntax

      var _iterator = _createForOfIteratorHelper(httpServerInitObject.sockets.values()),
          _step;

      try {
        for (_iterator.s(); !(_step = _iterator.n()).done;) {
          var socket = _step.value;
          socket.destroy();
        }
      } catch (err) {
        _iterator.e(err);
      } finally {
        _iterator.f();
      }
    } else {
      httpServerInitObject = (0, _initHttpServer["default"])(bundlePath);

      if (httpServerInitObject) {
        initialLoad = false;
        console.log('Server bundled successfully');
      } else {
        // server bundling error has occurred
        initialLoad = true;
      }
    }
  });
};

var watchServerChangesWithDefaultConfig = function watchServerChangesWithDefaultConfig(serverEntryPath) {
  var defaultConfig = (0, _generateDefaultConfig["default"])(serverEntryPath);
  watchServerChanges(defaultConfig);
};

exports.watchServerChangesWithDefaultConfig = watchServerChangesWithDefaultConfig;
var _default = watchServerChanges;
exports["default"] = _default;