more strong mode fixes

Author: devoncarew

.analysis_options

@@ -1,2 +1,2 @@
 analyzer:
- # strong-mode: true
+  strong-mode: true

example/demo_dart_results.html

@@ -175,7 +175,7 @@ <h1 class="page-title">DDC compilation report for example/demo.dart</h1>
 		</div>
 	</div>
 	<footer class="footer">
-		example/demo.dart • DDC version 0.1.17
+		example/demo.dart • DDC version 0.1.22
 	</footer>
 </div>
 </body>

lib/atom.dart

@@ -112,12 +112,12 @@ abstract class AtomPackage {
 
   Future<Map<String, dynamic>> loadPackageJson() {
     return HttpRequest.getString('atom://${id}/package.json').then((String str) {
-      return JSON.decode(str);
-    }) as Future<Map>;
+      return JSON.decode(str) as Map<String, dynamic>;
+    });
   }
 
   Future<String> getPackageVersion() {
-    return loadPackageJson().then((Map map) => map['version']) as Future<String>;
+    return loadPackageJson().then((Map map) => map['version']);
   }
 
   // /// Register a method for a service callback (`consumedServices`).

lib/atom_utils.dart

@@ -85,19 +85,19 @@ Future<String> which(String execName, {bool isBatchScript: false}) {
       result = result.trim();
       if (result.contains('\n')) result = result.split('\n').first;
       return result;
-    }) as Future<String>;
+    });
   } else if (isWindows) {
     String ext = isBatchScript ? 'bat' : 'exe';
     return exec('where', ['${execName}.${ext}']).then((String result) {
       result = result.trim();
       if (result.contains('\n')) result = result.split('\n').first;
       return result;
-    }) as Future<String>;
+    });
   } else {
     return exec('which', [execName]).then((String result) {
       result = result.trim();
       if (result.contains('\n')) result = result.split('\n').first;
       return result;
-    }) as Future<String>;
+    });
   }
 }

lib/node/process.dart

@@ -45,7 +45,7 @@ Future<String> exec(String command, [List<String> args, Map<String, String> env]
   return runner.execSimple().then((ProcessResult result) {
     if (result.exit == 0) return result.stdout;
     throw result.exit;
-  }) as Future<String>;
+  });
 }
 
 /// Execute the given command synchronously and return the stdout. If the
@@ -118,7 +118,7 @@ class ProcessRunner {
 
     return execStreaming().then((code) {
       return new ProcessResult(code, stdout.toString(), stderr.toString());
-    }) as Future<ProcessResult>;
+    });
   }
 
   Future<int> execStreaming() {