Fix dart analyze warnings (#2412)

Author: ntkme

lib/src/deprecation.dart

@@ -181,6 +181,7 @@ enum Deprecation {
         isFuture = false;
 
   /// Constructs a future deprecation.
+  // ignore: unused_element
   const Deprecation.future(this.id, {this.description})
       : _deprecatedIn = null,
         _obsoleteIn = null,

lib/src/embedded/compilation_dispatcher.dart

@@ -145,7 +145,7 @@ final class CompilationDispatcher {
 
     try {
       var importers = request.importers.map((importer) =>
-          _decodeImporter(request, importer) ??
+          _decodeImporter(importer) ??
           (throw mandatoryError("Importer.importer")));
 
       var globalFunctions = request.globalFunctions
@@ -159,7 +159,7 @@ final class CompilationDispatcher {
               color: request.alertColor,
               logger: logger,
               importers: importers,
-              importer: _decodeImporter(request, input.importer) ??
+              importer: _decodeImporter(input.importer) ??
                   (input.url.startsWith("file:") ? null : sass.Importer.noOp),
               functions: globalFunctions,
               syntax: syntaxToSyntax(input.syntax),
@@ -234,7 +234,7 @@ final class CompilationDispatcher {
   }
 
   /// Converts [importer] into a [sass.Importer].
-  sass.Importer? _decodeImporter(InboundMessage_CompileRequest request,
+  sass.Importer? _decodeImporter(
       InboundMessage_CompileRequest_Importer importer) {
     switch (importer.whichImporter()) {
       case InboundMessage_CompileRequest_Importer_Importer.path:
@@ -249,13 +249,13 @@ final class CompilationDispatcher {
         _checkNoNonCanonicalScheme(importer);
         return FileImporter(this, importer.fileImporterId);
 
-      case InboundMessage_CompileRequest_Importer_Importer.notSet:
-        _checkNoNonCanonicalScheme(importer);
-        return null;
-
       case InboundMessage_CompileRequest_Importer_Importer.nodePackageImporter:
         return npi.NodePackageImporter(
             importer.nodePackageImporter.entryPointDirectory);
+
+      case InboundMessage_CompileRequest_Importer_Importer.notSet:
+        _checkNoNonCanonicalScheme(importer);
+        return null;
     }
   }
 

lib/src/functions/color.dart

@@ -1610,7 +1610,7 @@ BuiltInCallable _channelFunction(
     warnForDeprecation(
         "${global ? '' : 'color.'}$name() is deprecated. Suggestion:\n"
         "\n"
-        'color.channel(\$color, \"$name\", \$space: $space)\n'
+        'color.channel(\$color, "$name", \$space: $space)\n'
         "\n"
         "More info: https://sass-lang.com/d/color-functions",
         Deprecation.colorFunctions);

test/util/string_test.dart

@@ -77,7 +77,7 @@ void main() {
 
         group("at the very beginning that's", () {
           for (var (name, (char, escape)) in chars.pairs) {
-            test(name, () => expect(char.toCssIdentifier(), equals('$escape')));
+            test(name, () => expect(char.toCssIdentifier(), equals(escape)));
           }
         });
 

tool/grind/bump_version.dart

@@ -62,14 +62,14 @@ void _bumpVersion(bool patch, bool dev) {
   void addChangelogEntry(String dir, Version version) {
     var path = p.join(dir, "CHANGELOG.md");
     var text = File(path).readAsStringSync();
-    if (!dev && text.startsWith("## ${version}-dev\n")) {
+    if (!dev && text.startsWith("## $version-dev\n")) {
       File(path).writeAsStringSync(
-          text.replaceFirst("## ${version}-dev\n", "## ${version}\n"));
-    } else if (text.startsWith("## ${version}\n")) {
+          text.replaceFirst("## $version-dev\n", "## $version\n"));
+    } else if (text.startsWith("## $version\n")) {
       return;
     } else {
       File(path).writeAsStringSync(
-          "## ${version}\n\n* No user-visible changes.\n\n$text");
+          "## $version\n\n* No user-visible changes.\n\n$text");
     }
   }