firka/flutter
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made builder required (#51993)

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Chad Nehemiah 2020-03-09 14:01:01 -05:00 committed by GitHub
parent 5b0a79dbdb
commit 31df1d459e
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1 changed files with 3 additions and 2 deletions
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packages/flutter/lib/src/widgets/layout_builder.dart
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@ -202,8 +202,9 @@ class LayoutBuilder extends ConstrainedLayoutBuilder<BoxConstraints> {
/// The [builder] argument must not be null. /// The [builder] argument must not be null.
const LayoutBuilder({ const LayoutBuilder({
Key key, Key key,
LayoutWidgetBuilder builder, @required LayoutWidgetBuilder builder,
}) : super(key: key, builder: builder); }) : assert(builder != null),
super(key: key, builder: builder);
@override @override
LayoutWidgetBuilder get builder => super.builder; LayoutWidgetBuilder get builder => super.builder;