Lint for importing a library from another package's lib/src directory.

[seaneagan]

Anything under lib/src is supposed to be private.

[zoechi]

Should ignore such imports from lib/src when it's from within the same package though.

[pq]

A stab at wording.

DON'T import implementation files from another package.

From the the pub package layout doc:

The libraries inside "lib" are publicly visible: other packages are free to import them. But much of a package's code is internal implementation libraries that should only be imported and used by the package itself. Those go inside a subdirectory of lib called src. You can create subdirectories in there if it helps you organize things.

You are free to import libraries that live in lib/src from within other Dart code in the same package (like other libraries in lib, scripts in bin, and tests) but you should never import from another package's lib/src directory. Those files are not part of the package’s public API, and they might change in ways that could break your code.

Bad:

// In 'road_runner'
import 'package:acme/lib/src/internals.dart;

...

As always, refinements welcome!

[zoechi]

sgtm

[pq]

Implemented w/ c62ec70, pushed out in 0.1.4.