Microsofts' EdgeDriver for Node.js

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An NPM wrapper for Microsofts' EdgeDriver. It manages to download various (or the latest) Edgedriver versions and provides a programmatic interface to start and stop it within Node.js. Note: this is a wrapper module. If you discover any bugs with EdgeDriver, please report them in the official repository.
You can install this package via:
npm install edgedriver

Once installed you can start Edgedriver via:
npx edgedriver --port=4444

By default, this package downloads Edgedriver when used for the first time through the CLI or the programmatical interface. If you like to download it as part of the NPM install process, set the EDGEDRIVER_AUTO_INSTALL environment flag, e.g.:

To get a list of available CLI options run npx edgedriver --help. By default this package tries to find the Mircosoft Edge version installed on a given system. If you prefer to have it install a custom EdgeDriver version you can define the environment variable EDGEDRIVER_VERSION when running in CLI, e.g.:
$ npm i edgedriver
$ EDGEDRIVER_VERSION=105.0.1343.33 npx edgedriver --version
Microsoft Edge WebDriver 105.0.1343.33 (4122bb4646b33f33bca5d269490b9caadfc452b2)
Programmatic Interface
You can import this package with Node.js and start the driver as part of your script and use it e.g. with WebdriverIO.

Exported Methods

The package exports a start, findEdgePath and download method.


Starts an EdgeDriver instance and returns a ChildProcess. If EdgeDriver is not downloaded it will download it for you.
Params: EdgedriverParameters - options to pass into EdgeDriver (see below)
import { start } from 'edgedriver';
import { remote } from 'webdriverio';
import waitPort from 'wait-port';

 * first start EdgeDriver
const cp = await start({ port: 4444 });

 * wait for EdgeDriver to be up
await waitPort({ port: 4444 });

 * then start WebdriverIO session
const browser = await remote({ capabilities: { browserName: 'msedge' } });
await browser.url('https://webdriver.io');
console.log(await browser.getTitle()); // prints "WebdriverIO · Next-gen browser and mobile automation test framework for Node.js | WebdriverIO"

 * kill Edgedriver process

Note: as you can see in the example above this package does not wait for the driver to be up, you have to manage this yourself through packages like wait-on.


Method to download an EdgeDriver with a particular version. If version parameter is omitted it tries to detect the version based on the Edge browser installed on the system.
Params: string - version of Edgedriver to download (optional) Returns: string - path to Edgedriver binary


The findEdgePath is a helper method to find the Microsoft Egde binary on given system. If there is a EDGE_BINARY_PATH environment set, it will return that value.
Returns: string - path to Microsoft Edge binary

CJS Support

In case your module uses CJS you can use this package as follows:
const { start } = require('edgedriver')
// see example above

Custom CDN URL

This allows you to use your own endpoints for downloading Edgedriver binaries. It is useful in air gapped scenarios or if you have download restrictions, such as firewalls. You can either set an environment variable:
$ npm i edgedriver
$ EDGEDRIVER_CDNURL=https://msedgedriver.azureedge.net npx edgedriver --version

or create a .npmrc with the following content:


The start method offers the following options to be passed on to the actual Edgedriver CLI.


The version of EdgeDriver to start. See Egdedriver directory list for all available versions, platforms and architecture.
Type: number
Default: latest


The port on which the driver should run.
Example: 9515
Type: number


The port on which the ADB driver should run.
Example: 9515
Type: number


Base URL path prefix for commands, e.g. wd/url.
Example: /
Type: string


Write server log to file instead of stderr, increases log level to INFO
Type: string


Set log level. Possible options ALL, DEBUG, INFO, WARNING, SEVERE, OFF.
Type: string


Log verbosely (equivalent to --log-level=ALL)
Type: boolean


Log nothing (equivalent to --log-level=OFF)
Type: boolean


Append log file instead of rewriting.
Type: boolean


Log verbosely and don't truncate long strings so that the log can be replayed (experimental).
Type: boolean


Add readable timestamps to log.
Type: boolean


Show logs from the browser (overrides other logging options).
Type: boolean


Custom bidi mapper path.
Type: string


Comma-separated allowlist of remote IP addresses which are allowed to connect to EdgeDriver.
Type: string[]
Default: ['']


Comma-separated allowlist of request origins which are allowed to connect to EdgeDriver. Using * to allow any host origin is dangerous!
Type: string[]
Default: ['*']


The path to the root of the cache directory.
Type: string
Default: process.env.EDGEDRIVER_CACHE_DIR || os.tmpdir()


Don't download EdgeDriver, instead use a custom path to it, e.g. a cached binary.
Type: string
Default: process.env.EDGEDRIVER_PATH
For more information on WebdriverIO see the homepage.