Setters not preserved with React.createClass

[caub]

setters in React.createClass are ignored http://jsfiddle.net/crl/fu06rxw8/3,
but they work with class syntax http://jsfiddle.net/crl/fu06rxw8/4/

Wouldn't it be possible to create the component class from the object given and preserve any setters/getters?

[jimfb]

Probably not in a remotely performant way. Performance of module initialization (which directly influences initial load time) would be fatal. http://jsperf.com/sdfewfgwasd/2

Going to close this out, because... it's an edge case that people rarely hit, I don't think we can support it in a performant way, and the workaround is to use ES6 classes.

Feel free to continue the discussion on this thread. We can re-open / re-examine if our thinking on this matter changes dramatically.

That said, I am curious to hear about your use case. What are you trying to do?

[zpao]

There's some other discussion in #4450 & #2575 which should give more background. I don't think we intend to make any fundamental changes to the way createClass works so it's really unlikely we'd make setters work.

[caub]

Ah ok thanks guys, performance I see, and even through mixins it's not possible?, I didn't manage as well.

@jimfb I'm doing an html 'wysiwyg' editor, and for a few components, it's a bit dirty because they should be updated by many different events (selectionchange, keydown, mousedown), quite frequently (even if throttled). So sometimes I choose to update the position of popovers (div overlays) manually rather, with vanilla js, and put less things in state, sometimes even nothing. (Another example of where I can't use react is this http://jsfiddle.net/crl/ckvstvrk/36/ react is too slow for these sort of things)

I could do something like http://jsfiddle.net/crl/fu06rxw8/6/ but it's not important after all, thanks