Fix strong-mode warnings.

[email protected]

Review URL: https://codereview.chromium.org//1826093002 .

.analysis_options

@@ -0,0 +1,2 @@
+analyzer:
+  strong-mode: true

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.10.1+1
+
+* Fix all strong mode warnings.
+
 ## 0.10.1
 
 * Add a `mapUrl` named argument to `parse` and `parseJson`. This argument is

lib/parser.dart

@@ -182,7 +182,7 @@ class SingleMapping extends Mapping {
     var names = new LinkedHashMap<String, int>();
 
     var lineNum;
-    var targetEntries;
+    List<TargetEntry> targetEntries;
     for (var sourceEntry in sourceEntries) {
       if (lineNum == null || sourceEntry.target.line > lineNum) {
         lineNum = sourceEntry.target.line;
@@ -212,8 +212,8 @@ class SingleMapping extends Mapping {
 
   SingleMapping.fromJson(Map map, {mapUrl})
       : targetUrl = map['file'],
-        urls = map['sources'],
-        names = map['names'],
+        urls = new List<String>.from(map['sources']),
+        names = new List<String>.from(map['names']),
         sourceRoot = map['sourceRoot'],
         lines = <TargetLineEntry>[],
         _mapUrl = mapUrl is String ? Uri.parse(mapUrl) : mapUrl {

pubspec.yaml

@@ -1,5 +1,5 @@
 name: source_maps
-version: 0.10.2-dev
+version: 0.10.1+1
 author: Dart Team <[email protected]>
 description: Library to programmatically manipulate source map files.
 homepage: http://github.com/dart-lang/source_maps