How is it possible to check Browser compatibility on CircleCI VMs without using a third party service like SauceLabs. (tests are in Mocha framework.)
Which browsers would you like to check the compatibility with? It is possible to run Chrome and Firefox on CircleCI, but we would obviously not be able to run Safari or IE.
With SauceLabs, you’ll have the very latest browser versions while we cannot really guarantee that fact unless you are installing the browsers yourself during the build. If this is an issue for you, we would suggest using SauceLabs for this.
You might have already seen that it is possible to connect to SauceLabs during your CircleCI build, as described right here.