[web_compilers] Add support for js_interop_unsafe (#3613)

Also bump min SDK
Also prepare for release

build_web_compilers/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 4.0.7
+
+- Support `dart:js_interop_unsafe`.
+- Require Dart 3.1 or greater.
+
 ## 4.0.6
 
 - Allow version 3.3.x of the Dart SDK.

build_web_compilers/lib/src/platforms.dart

@@ -16,6 +16,7 @@ const _libraries = [
   'indexed_db',
   'js',
   'js_interop',
+  'js_interop_unsafe',
   'js_util',
   'math',
   'svg',

build_web_compilers/lib/src/web_entrypoint_builder.dart

@@ -72,18 +72,12 @@ class WebEntrypointBuilder implements Builder {
         deprecatedOptions: _deprecatedOptions);
     var compilerOption =
         options.config[_compilerOption] as String? ?? 'dartdevc';
-    WebCompiler compiler;
-    switch (compilerOption) {
-      case 'dartdevc':
-        compiler = WebCompiler.DartDevc;
-        break;
-      case 'dart2js':
-        compiler = WebCompiler.Dart2Js;
-        break;
-      default:
-        throw ArgumentError.value(compilerOption, _compilerOption,
-            'Only `dartdevc` and `dart2js` are supported.');
-    }
+    var compiler = switch (compilerOption) {
+      'dartdevc' => WebCompiler.DartDevc,
+      'dart2js' => WebCompiler.Dart2Js,
+      _ => throw ArgumentError.value(compilerOption, _compilerOption,
+          'Only `dartdevc` and `dart2js` are supported.')
+    };
 
     if (options.config[_dart2jsArgsOption] is! List) {
       var message = options.config[_dart2jsArgsOption] is String

build_web_compilers/pubspec.yaml

@@ -1,10 +1,10 @@
 name: build_web_compilers
-version: 4.0.6
+version: 4.0.7
 description: Builder implementations wrapping the dart2js and DDC compilers.
 repository: https://github.com/dart-lang/build/tree/master/build_web_compilers
 
 environment:
-  sdk: '>=3.0.0 <3.4.0'
+  sdk: '>=3.1.0 <3.4.0'
 
 dependencies:
   analyzer: '>=5.1.0 <7.0.0'