Type annotations in outline view and cmd+o

[teamdandelion]

(As discussed in emails) It would be great if outline view and command+O would display type information for member variables, and return types for functions

[derekcicerone-zz]

Agreed that it would be cool but we might need this one to come from the typescript team to support it. Gathering type information can be somewhat expensive and the outline view performance is directly tied into the speed of opening a document so it's very sensitive to slowdowns. I believe the current view is built solely from the syntax tree to make it as crazy fast as possible.