Add default field to converter

Proprietary

A stateless IValueConverter or IMultiValueConverter should expose a Default instance rather than being constructed per binding. Adds static readonly T Default = new T(); and seals the converter.

OpenRewrite.Recipes.CSharp.CodeQuality.Wpf.AddDefaultFieldToValueConverter

mod run . --recipe=OpenRewrite.Recipes.CSharp.CodeQuality.Wpf.AddDefaultFieldToValueConverter

Install it once, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.