Update SDK constraint, enable/fix lints (dart-lang/pubspec_parse#43)

pkgs/pubspec_parse/.travis.yml

diff --git a/pkgs/pubspec_parse/.travis.yml b/pkgs/pubspec_parse/.travis.yml
index b82f2f3..536ccee 100644
--- a/pkgs/pubspec_parse/.travis.yml
+++ b/pkgs/pubspec_parse/.travis.yml
@@ -13,7 +13,7 @@
     - dart: dev
       dart_task:
         dartanalyzer: --fatal-infos --fatal-warnings .
-    - dart: 2.0.0
+    - dart: 2.2.0
       dart_task:
         dartanalyzer: --fatal-warnings .
 

pkgs/pubspec_parse/CHANGELOG.md

diff --git a/pkgs/pubspec_parse/CHANGELOG.md b/pkgs/pubspec_parse/CHANGELOG.md
index d432649..1f62e3a 100644
--- a/pkgs/pubspec_parse/CHANGELOG.md
+++ b/pkgs/pubspec_parse/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.1.5
+
+- Update SDK requirement to `>=2.2.0 <3.0.0`.
+
 ## 0.1.4
 
 - Added `lenient` named argument to `Pubspec.fromJson` to ignore format and type errors. 

pkgs/pubspec_parse/analysis_options.yaml

diff --git a/pkgs/pubspec_parse/analysis_options.yaml b/pkgs/pubspec_parse/analysis_options.yaml
index 4f0a48b..f983bb3 100644
--- a/pkgs/pubspec_parse/analysis_options.yaml
+++ b/pkgs/pubspec_parse/analysis_options.yaml
@@ -61,14 +61,14 @@
     - package_names
     - package_prefixed_library_names
     - prefer_adjacent_string_concatenation
-    # TODO: reenable this once we want to pin the SDK to >=2.2.0
-    # - prefer_collection_literals
+    - prefer_collection_literals
     - prefer_conditional_assignment
     - prefer_const_constructors
     - prefer_contains
     - prefer_equal_for_default_values
     - prefer_final_fields
     - prefer_final_locals
+    - prefer_generic_function_type_aliases
     - prefer_initializing_formals
     - prefer_interpolation_to_compose_strings
     - prefer_is_empty

pkgs/pubspec_parse/lib/src/pubspec.dart

diff --git a/pkgs/pubspec_parse/lib/src/pubspec.dart b/pkgs/pubspec_parse/lib/src/pubspec.dart
index c05e824..3d542d7 100644
--- a/pkgs/pubspec_parse/lib/src/pubspec.dart
+++ b/pkgs/pubspec_parse/lib/src/pubspec.dart
@@ -166,7 +166,7 @@
   }
 
   static List<String> _normalizeAuthors(String author, List<String> authors) {
-    final value = Set<String>();
+    final value = <String>{};
     if (author != null) {
       value.add(author);
     }

pkgs/pubspec_parse/pubspec.yaml

diff --git a/pkgs/pubspec_parse/pubspec.yaml b/pkgs/pubspec_parse/pubspec.yaml
index 0b48262..c1df008 100644
--- a/pkgs/pubspec_parse/pubspec.yaml
+++ b/pkgs/pubspec_parse/pubspec.yaml
@@ -2,12 +2,12 @@
 description: >-
   Simple package for parsing pubspec.yaml files with a type-safe API and rich
   error reporting.
-version: 0.1.4
+version: 0.1.5-dev
 homepage: https://github.com/dart-lang/pubspec_parse
 author: Dart Team <misc@dartlang.org>
 
 environment:
-  sdk: '>=2.0.0 <3.0.0'
+  sdk: '>=2.2.0 <3.0.0'
 
 dependencies:
   # Verified that no new features since 1.0.0 are used - be careful!