wdio.conf.js

let browserstack = require("browserstack-local");
let bsLocal;

exports.config = {
    user: process.env.BROWSERSTACK_USERNAME,
    key: process.env.BROWSERSTACK_ACCESS_KEY,
    services: [["browserstack", { browserstackLocal: true }]],
    capabilities: [{
        "bstack:options": {
            "os": "Windows",
            "osVersion": "10",
            "resolution": "1920x1080",
            "projectName": "ProjectName",
            "buildName": "testwdio",
            "sessionName": "NameName",
            "local": "true",
            "networkLogs": "true",
            "video": "true",
            "seleniumVersion": "3.141.59"
        },
        "browserName": "Chrome",
        "goog:chromeOptions": {
            excludeSwitches: ["enable-automation", "load-extension"]
        }
    }],
    specs: [
        "./**/*Spec.js"
    ],
    onPrepare(config, capabilities) {
        bsLocal = new browserstack.Local();
        bsLocal.start({ "key": process.env.BROWSERSTACK_ACCESS_KEY }, function () { });
    },

    onComplete(capabilties, specs) {
        bsLocal.stop(function () { });
    },
    runner: "local",
    logLevel: "warn",
    bail: 0,
    waitforTimeout: 10000,
    connectionRetryTimeout: 90000,
    connectionRetryCount: 3,
    framework: "mocha",
    reporters: ["dot"],
    mochaOpts: {
        ui: "bdd",
        timeout: 60000
    }
}