js formatting was switch to prettier on master, but that change was not backported to 8.0, then a subsquent PR remove all scons based code from 8.0, assuming clang_format was obselete and that the bazel linters would lint it on 8.0, which was not the case without the missing backport.

For the short term, we should just restore clang format as that is what most of the js code is currently formatted to on v8.0. A future effort could work to backport the prettier change and reformat all js code with the same linters from master.