is it posible to compile individual module separately?

[bokuno_D via Digitalmars-d-learn]

i want to compile individual module that are required to compile 
the main module.
i just start learning D yeserday, i tried to compile serve-D LSP 
tobe used with SublimeLSP.
i run "dub build" on it. but OOM kill the compiler.
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is there a way to reduce memory consumtion of the compiler?
or maybe third party tool? alternative to dub?