fix analyzer warnings

analysis_options.yaml

@@ -1,5 +1,7 @@
 include: package:lints/recommended.yaml
 
 analyzer:
-  strong-mode:
-    implicit-dynamic: false
+  language:
+    strict-casts: true
+    strict-inference: true
+    strict-raw-types: true

lib/src/sanitizer.dart

@@ -130,7 +130,7 @@ String normalizeEmail(String email, [Map<String, Object>? options]) {
     return '';
   }
 
-  List parts = email.split('@');
+  final parts = email.split('@');
   parts[1] = parts[1].toLowerCase();
 
   if (options['lowercase'] == true) {

lib/src/validator.dart

@@ -317,7 +317,7 @@ bool isDivisibleBy(String str, Object n) {
 ///
 /// Note: this function takes into account surrogate pairs.
 bool isLength(String str, int min, [int? max]) {
-  List surrogatePairs = _surrogatePairsRegExp.allMatches(str).toList();
+  final surrogatePairs = _surrogatePairsRegExp.allMatches(str).toList();
   int len = str.length - surrogatePairs.length;
   return len >= min && (max == null || len <= max);
 }

pubspec.yaml

@@ -1,5 +1,5 @@
 name: string_validator
-version: 1.0.0
+version: 1.0.1
 description: Dart library for validating and sanitizing strings, especially
   those from user input.
 homepage: https://github.com/suragch/string_validator