[SR-1960] typealias in extension may not work depending on the compile order.

[swift-ci]

Previous ID	SR-1960
Radar	None
Original Reporter	nh7a (JIRA User)
Type	Bug
Status	Resolved
Resolution	Duplicate

Additional Detail from JIRA

Votes	0
Component/s
Labels	Bug
Assignee	None
Priority	Medium

md5: 889863ce2033f9cc73b7dc52d4ee8add

duplicates:

• SR-631 Extensions in different files do not recognize each other

Issue Description:

When I have code like below in a file,

extension NSObject {
    typealias Name = String
}

I should be able to use the type somewhere else like below,

extension NSObject.Name {
    static let b = NSObject.Name("b")
}

but it can fail by "'Name' is not a member type of 'NSObject'" depending on the compile order.