Fix the tracking of variable nodes for scopes (#1681)

Co-authored-by: Natalie Weizenbaum <nweiz@google.com>

Author: stof

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 1.51.1
+
+* Fix an issue where source locations tracked through variable references could
+  potentially become incorrect.
+
 ## 1.51.0
 
 * **Potentially breaking change**: Change the order of maps returned by

lib/src/async_environment.dart

@@ -773,6 +773,7 @@ class AsyncEnvironment {
       for (var name in _variables.removeLast().keys) {
         _variableIndices.remove(name);
       }
+      _variableNodes.removeLast();
       for (var name in _functions.removeLast().keys) {
         _functionIndices.remove(name);
       }

lib/src/environment.dart

@@ -5,7 +5,7 @@
 // DO NOT EDIT. This file was generated from async_environment.dart.
 // See tool/grind/synchronize.dart for details.
 //
-// Checksum: 6b97030ff074d0b39e027ea97ba5893d242b9d3d
+// Checksum: 88f81b417129a74e4eb776d518c8e019dbf2ec36
 //
 // ignore_for_file: unused_import
 
@@ -779,6 +779,7 @@ class Environment {
       for (var name in _variables.removeLast().keys) {
         _variableIndices.remove(name);
       }
+      _variableNodes.removeLast();
       for (var name in _functions.removeLast().keys) {
         _functionIndices.remove(name);
       }

pkg/sass_api/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.0-beta.44
+
+* No user-visible changes.
+
 ## 1.0.0-beta.43
 
 * 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: 1.0.0-beta.43
+version: 1.0.0-beta.44
 description: Additional APIs for Dart Sass.
 homepage: https://github.com/sass/dart-sass
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
-  sass: 1.51.0
+  sass: 1.51.1
 
 dependency_overrides:
   sass: {path: ../..}

pubspec.yaml

@@ -1,5 +1,5 @@
 name: sass
-version: 1.51.0
+version: 1.51.1-dev
 description: A Sass implementation in Dart.
 homepage: https://github.com/sass/dart-sass