analysis_options: disallow implicit casts

Author: kevmoo

analysis_options.yaml

@@ -1,7 +1,7 @@
 include: package:pedantic/analysis_options.yaml
 analyzer:
-#  strong-mode:
-#    implicit-casts: false
+  strong-mode:
+    implicit-casts: false
 linter:
   rules:
     - always_declare_return_types

lib/src/exception.dart

@@ -8,7 +8,7 @@ import 'string_scanner.dart';
 
 /// An exception thrown by a [StringScanner] that failed to parse a string.
 class StringScannerException extends SourceSpanFormatException {
-  String get source => super.source;
+  String get source => super.source as String;
 
   /// The URL of the source file being parsed.
   ///

lib/src/string_scanner.dart

@@ -58,7 +58,8 @@ class StringScanner {
   /// URL of the source of the string being scanned, if available. It can be
   /// a [String], a [Uri], or `null`.
   StringScanner(this.string, {sourceUrl, int position})
-      : sourceUrl = sourceUrl is String ? Uri.parse(sourceUrl) : sourceUrl {
+      : sourceUrl =
+            sourceUrl is String ? Uri.parse(sourceUrl) : sourceUrl as Uri {
     if (position != null) this.position = position;
   }