source: imaps-frontend/node_modules/webpack/hot/lazy-compilation-node.js

/* global __resourceQuery */

"use strict";

var urlBase = decodeURIComponent(__resourceQuery.slice(1));

/**
 * @param {{ data: string, onError: (err: Error) => void, active: boolean, module: module }} options options
 * @returns {() => void} function to destroy response
 */
exports.keepAlive = function (options) {
        var data = options.data;
        var onError = options.onError;
        var active = options.active;
        var module = options.module;
        /** @type {import("http").IncomingMessage} */
        var response;
        var request = (
                urlBase.startsWith("https") ? require("https") : require("http")
        ).request(
                urlBase + data,
                {
                        agent: false,
                        headers: { accept: "text/event-stream" }
                },
                function (res) {
                        response = res;
                        response.on("error", errorHandler);
                        if (!active && !module.hot) {
                                console.log(
                                        "Hot Module Replacement is not enabled. Waiting for process restart..."
                                );
                        }
                }
        );

        /**
         * @param {Error} err error
         */
        function errorHandler(err) {
                err.message =
                        "Problem communicating active modules to the server: " + err.message;
                onError(err);
        }
        request.on("error", errorHandler);
        request.end();
        return function () {
                response.destroy();
        };
};