Update charted to 0.4.8 and roll

packages/which/test/which_test.dart

-
-library which.test.which;
-
-import 'package:path/path.dart';
-import 'package:unittest/unittest.dart';
-import 'package:which/which.dart';
-
-main() {
-  group('which', () {
-    // Any dart:io supported platform (*nix, osx, windows) should have `find`.
-    test('should find `find`', () => which('find').then(_testResult));
-  });
-
-  group('whichSync', () {
-    // Any dart:io supported platform (*nix, osx, windows) should have `find`.
-    test('should find `find`', () {
-      _testResult(whichSync('find'));
-    });
-  });
-}
-
-_testResult(String path) {
-  expect(path, isNotNull);
-  var base = basenameWithoutExtension(path);
-  expect(base, 'find');
-}