The steps in this MSDN forum post worked for me. Reproducing for Googleability:
Find the installer for Visual Studio 2015 in your installer cache.
cd /d "%ProgramData%\Package Cache"
dir vs*exe /s /b
Find the path to vs_community.exe, vs_professional.exe, or vs_enterprise.exe, and copy that path.
(I found my vs_enterprise.exe
at C:\ProgramData\Package Cache\{a60a492e-b5eb-4218-a9e6-f38d18a7dbaf}\vs_enterprise.exe
)
CD into that path, e.g.,
cd {a60a492e-b5eb-4218-a9e6-f38d18a7dbaf}
Execute the installer with the options /modify /installselectableitems Javascript
, e.g.,
vs_enterprise.exe /modify /installselectableitems Javascript
In Visual Studio setup, select Modify then Update, without changing any feature selections.
Then:
cd C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE
devenv /updateconfiguration
devenv /clearcache