OK, so you are talking about the ability of the IDE to scan (and parse where needed) the code and libraries to generate a symbol table for validation, auto-completion and definition / usage look-up.
Yes, but note that for this the IDE needs compilation, which is why I used the word "build" (perhaps confusingly).
Eclipse for Java does this perfectly, and I assume many other IDEs do so too. Scala IDE, which is built on top of Eclipse, does a terrible job at this. For a statically typed language such as Scala, it's aggravating when your tools report spurious compilation errors.
