Fix MapExtensions.getOption() for nullable types (#2241)

Closes #2239

Author: nex3

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.77.1
+
+* Fix a crash that could come up with importers in certain contexts.
+
 ## 1.77.0
 
 * *Don't* throw errors for at-rules in keyframe blocks.

lib/src/util/map.dart

@@ -21,5 +21,5 @@ extension MapExtensions<K, V> on Map<K, V> {
 
   /// Returns an option that contains the value at [key] if one exists and null
   /// otherwise.
-  Option<V> getOption(K key) => containsKey(key) ? (this[key]!,) : null;
+  Option<V> getOption(K key) => containsKey(key) ? (this[key] as V,) : null;
 }

pkg/sass_api/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 10.4.1
+
+* No user-visible changes.
+
 ## 10.4.0
 
 * No user-visible changes.

pkg/sass_api/pubspec.yaml

@@ -2,15 +2,15 @@ name: sass_api
 # Note: Every time we add a new Sass AST node, we need to bump the *major*
 # version because it's a breaking change for anyone who's implementing the
 # visitor interface(s).
-version: 10.4.0
+version: 10.4.1
 description: Additional APIs for Dart Sass.
 homepage: https://github.com/sass/dart-sass
 
 environment:
   sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
-  sass: 1.77.0
+  sass: 1.77.1
 
 dev_dependencies:
   dartdoc: ^6.0.0

pubspec.yaml

@@ -1,5 +1,5 @@
 name: sass
-version: 1.77.0
+version: 1.77.1
 description: A Sass implementation in Dart.
 homepage: https://github.com/sass/dart-sass