Assess whether dispatchBeforeOwnPropertyChange and co have ever been used in any real project

[marchant]

They are expensive and if not used for the past 9 years, they gotta go.

[johnnykahalawai]

@marchant -

They are used in Contour.

[marchant]

I which pattern? I mean, we know implementing it ourselves is faster than letting the default system do it, but is there code listening on beforeChange events actually being sent?

[johnnykahalawai]

@marchant ,

I see. I don't see handleBefore* being used.