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Also make the titles and one line summaries a little more consistent (at least for diagnsotic groups and upcoming language features, haven't gone through the educational notes).
1.1 KiB
1.1 KiB
Member import visibility (MemberImportVisibility)
Enables errors for uses of members that cannot be accessed because their defining module is not directly imported.
Overview
Prior to enabling this feature, it was possible to use a member if it was declared in a module that
was transitively imported. MemberImportVisibility unifies the visibility rules for members to
match those of top-level, such that only members contained in a direct import are visible:
func getFileContents() throws -> String {
// error: initializer 'init(contentsOfFile:)' is not available due to missing import of defining module 'Foundation'
return try String(contentsOfFile: "example.txt")
}
To resolve the error, add an import of the module that defines the member.
Migration
-enable-upcoming-feature MemberImportVisibility:migrate
Enabling migration for MemberImportVisibility adds fix-its for the missing modules, i.e. those that
declare members used in the file and are not directly imported.