Wrote some tools in php + html + vanilla js, around 15 years ago, still in use, with ZERO work to maintain them. Wrote some tools in the last 4 years in the ne

Wrote some tools in php + html + vanilla js, around 15 years ago, still in use, with ZERO work to maintain them. Wrote some tools in the last 4 years in the new fancy js ecosystem, and have to update them them permanently, migrate to new version, and and and. I am sure, i did something right in the past, but i don't now what ;-)