try {
    const path = require("path");

    let defaultReporters = ["progress", "summary"];

    /** Creates the Karma config function based on the provided options
     *
     * @param {object} config Configuration options to override on/add to the base config.
     */
    function createKarmaConfig(config) {
        return function (karmaConfig) {
            karmaConfig.set({
                basePath: path.resolve(__dirname, ".."),
                frameworks: ["jasmine"],
                files: [
                    "wwwroot/lib/msgpack5/msgpack5.js",
                    "node_modules/@aspnet/signalr/dist/browser/signalr.js",
                    "node_modules/@aspnet/signalr-protocol-msgpack/dist/browser/signalr-protocol-msgpack.js",
                    "wwwroot/dist/signalr-functional-tests.js"
                ],
                preprocessors: {
                    "**/*.js": ["sourcemap"]
                },
                port: 9876,
                colors: true,
                logLevel: config.LOG_INFO,
                autoWatch: false,
                singleRun: false,
                concurrency: Infinity,

                // Log browser messages to a file, not the terminal.
                browserConsoleLogOptions: {
                    level: "debug",
                    terminal: false
                },

                // Increase some timeouts that are a little aggressive when multiple browsers (or SauceLabs) are in play.
                browserDisconnectTimeout: 10000, // default 2000
                browserDisconnectTolerance: 1, // default 0
                browserNoActivityTimeout: 4 * 60 * 1000, //default 10000
                captureTimeout: 4 * 60 * 1000, //default 60000

                // Override/add values using the passed-in config.
                ...config,

                // Apply the default reporters along with whatever was passed in
                reporters: [...defaultReporters, ...(config.reporters || [])],
            });
        }
    }

    module.exports = createKarmaConfig;
} catch (e) {
    console.error(e);
}