Remove CompileResult.sourceFiles

This was never used.

Author: nex3

lib/src/async_compile.dart

@@ -6,7 +6,6 @@ import 'dart:convert';
 
 import 'package:path/path.dart' as p;
 import 'package:source_maps/source_maps.dart';
-import 'package:source_span/source_span.dart';
 
 import 'ast/sass.dart';
 import 'async_import_cache.dart';
@@ -190,12 +189,6 @@ class CompileResult {
   /// This is `null` if source mapping was disabled for this compilation.
   SingleMapping? get sourceMap => _serialize.sourceMap;
 
-  /// A map from source file URLs to the corresponding [SourceFile]s.
-  ///
-  /// This can be passed to [sourceMap]'s [Mapping.spanFor] method. It's `null`
-  /// if source mapping was disabled for this compilation.
-  Map<String, SourceFile>? get sourceFiles => _serialize.sourceFiles;
-
   /// The set that will eventually populate the JS API's
   /// `result.stats.includedFiles` field.
   ///

lib/src/util/source_map_buffer.dart

@@ -3,7 +3,6 @@
 // https://opensource.org/licenses/MIT.
 
 import 'package:charcode/charcode.dart';
-import 'package:collection/collection.dart';
 import 'package:source_maps/source_maps.dart';
 import 'package:source_span/source_span.dart';
 
@@ -17,15 +16,6 @@ class SourceMapBuffer implements StringBuffer {
   /// The source map entries that map the source files to [_buffer].
   final _entries = <Entry>[];
 
-  /// A map from source file URLs to the corresponding [SourceFile]s.
-  ///
-  /// This is of a form that can be passed to [Mapping.spanFor].
-  Map<String, SourceFile> get sourceFiles => UnmodifiableMapView({
-        for (var entry in _sourceFiles.entries)
-          entry.key.toString(): entry.value
-      });
-  final _sourceFiles = <Uri?, SourceFile>{};
-
   /// The index of the current line in [_buffer].
   var _line = 0;
 
@@ -84,7 +74,6 @@ class SourceMapBuffer implements StringBuffer {
       if (entry.target.offset == target.offset) return;
     }
 
-    _sourceFiles.putIfAbsent(source.sourceUrl, () => source.file);
     _entries.add(Entry(source, target, null));
   }
 

lib/src/visitor/serialize.dart

@@ -8,7 +8,6 @@ import 'dart:typed_data';
 import 'package:charcode/charcode.dart';
 import 'package:meta/meta.dart';
 import 'package:source_maps/source_maps.dart';
-import 'package:source_span/source_span.dart';
 import 'package:string_scanner/string_scanner.dart';
 
 import '../ast/css.dart';
@@ -73,8 +72,7 @@ SerializeResult serialize(CssNode node,
 
   return SerializeResult(prefix + css,
       sourceMap:
-          sourceMap ? visitor._buffer.buildSourceMap(prefix: prefix) : null,
-      sourceFiles: sourceMap ? visitor._buffer.sourceFiles : null);
+          sourceMap ? visitor._buffer.buildSourceMap(prefix: prefix) : null);
 }
 
 /// Converts [value] to a CSS string.
@@ -1317,11 +1315,5 @@ class SerializeResult {
   /// This is `null` if source mapping was disabled for this compilation.
   final SingleMapping? sourceMap;
 
-  /// A map from source file URLs to the corresponding [SourceFile]s.
-  ///
-  /// This can be passed to [sourceMap]'s [Mapping.spanFor] method. It's `null`
-  /// if source mapping was disabled for this compilation.
-  final Map<String, SourceFile>? sourceFiles;
-
-  SerializeResult(this.css, {this.sourceMap, this.sourceFiles});
+  SerializeResult(this.css, {this.sourceMap});
 }