Catch compile error

It seems that Roku will throw compile errors when trying to reuse a typed parameter variable name in a for each loop.

Consider this example:

sub testCompileError(item as object)
  for each item in []
  end for
end sub

Since item is typed as object, for some reason, Roku has decided to prevent using that same variable in the for each loop, even though developers would expect it to just reuse that item variable.

Reassigning the variable right above the loop does not mitigate the issue either.

sub testCompileError(item as object)
  item = {} ' does not mitigate the issue
  for each item in []
  end for
end sub

The issue names no files or tests; begin by locating the TypeScript compiler handling for typed parameters and for each loop variables. Reproduce the BrightScript examples, determine the intended handling of the reported Roku compile error, and confirm the result with a regression test.