go-playground/validator¹ is probably the most ubiquitous validation library in Go codebases. As much as it's flexible and neat, it's sometimes a PITA to iterate — I have to setup a whole new Go project² to just test some tags.

Hence, I made a WASM³ driven online playground for the same! You can find it here: https://apps.abhijithota.me/go-validator-playground/

You can find the code and more details on the GitHub repo: https://github.com/abhijit-hota/go-validator-playground

    1: https://pkg.go.dev/github.com/go-playground/validator/v10
    2: Still waiting for a good Go REPL
    3: There is an obvious drawback of loading the 6 MB WASM binary upfront over just using a HTTP server but hey, this a half-serious experiment!