keyboard focus + app_info

lib/builder.dart

@@ -0,0 +1,35 @@
+import 'dart:async';
+
+import 'package:build/build.dart';
+
+Builder appInfoBuilder(BuilderOptions options) => _AppInfoBuilder();
+
+class _AppInfoBuilder implements Builder {
+  @override
+  Map<String, List<String>> get buildExtensions => const {
+        r'$package$': ['lib/app_info.g.dart'],
+      };
+
+  @override
+  Future<void> build(BuildStep buildStep) async {
+    final pkg = buildStep.inputId.package;
+    final raw = await buildStep.readAsString(AssetId(pkg, 'pubspec.yaml'));
+    final match =
+        RegExp(r'^version:\s*([^\s#]+)', multiLine: true).firstMatch(raw);
+    final combined = match?.group(1) ?? '0.0.0+0';
+    final plus = combined.indexOf('+');
+    final version = plus < 0 ? combined : combined.substring(0, plus);
+    final buildNumber =
+        plus < 0 ? 0 : int.tryParse(combined.substring(plus + 1)) ?? 0;
+
+    await buildStep.writeAsString(
+      AssetId(pkg, 'lib/app_info.g.dart'),
+      '''
+// GENERATED by build_runner from pubspec.yaml — do not edit.
+import 'package:ux/ux.dart';
+
+const kAppInfo = AppInfo(version: '$version', buildNumber: $buildNumber);
+''',
+    );
+  }
+}