A Comprehensive Guide to Frontend Testing
I think it would be amazing to address how to test a frontend application, and provide a comprehensive guide that comes out regularly to help encourage frontend devs to test more. It can feel quite overwhelming at times, and having a nice guide to get up to speed with, and remove the mystery would be super.
I see there is a topic suggested about end-to-end testing (https://smashingmag.featureupvote.com/suggestions/3412/end-to-end-testing). I think that addressing the whole testing ecosystem would be great to do a series or complete guide on. The intention would be to highlight how to get started, what to test and how, what tools there are etc etc. It could be massive :)