There is https://patoline.github.io/ https://patoline.github.io/ but it's been in alpha / active development for years now. I agree that TeX's errors is one of

There is https://patoline.github.io/ https://patoline.github.io/ but it's been in alpha / active development for years now. I agree that TeX's errors is one of the worst things about it. Strongly suggest you track your changes in git, I found it was often easier to go back to some version that compiled and re-add the changes, rather than try and track down the missing bracket or extra backslash that broke it.