Current implementation requires @babel/plugin-proposal-private-methods plugin in RN Babel config, to be added to README

[berkaydemir6]

It is fixing when i add
@babel/plugin-proposal-private-methods
to babel file. But then i am getting an error for Flatlist.

[birdofpreyru]

Ogh... try to configure it as ['@babel/plugin-proposal-private-methods', {loose: true}],? It turns out I have it in all my RN projects I use this library with, thus haven't realize it is a problem for default babel config.

[berkaydemir6]

Thanks. Working now.

[thanhnvpk01168]

Hi @birdofpreyru @b3rkaydem1r .
I still do not understand.
how did you fix it?

[thanhnvpk01168]

[birdofpreyru]

@thanhnvpk01168 didn't it help to add the plugin, like you show in your screenshot?

[thanhnvpk01168]

@birdofpreyru
oh, so do you have any way to fix this?

[birdofpreyru]

I'm not following, what do you mean? Fixing it in the library to not have adding the plugin to the host project? I guess can be done.

[berkaydemir6]

@thanhnvpk01168 It was working when i add. But a few days later it's started not working. Same error. I am deleting the @babel/plugin-proposal-private-methods line but error is same. It doesnt work with flatlist.

[berkaydemir6]

is it possible to disable @babel/plugin-proposal-private-methods library? @birdofpreyru

[birdofpreyru]

I don't know. I was under impression it is still necessary to make private JS class members to work in RN. It makes no sense to get rid of private members in code, but maybe it can work already without this plugin. Needs investigation.

[berkaydemir6]

Can you check? I'm stuck at this point.

[birdofpreyru]

It is of very low priority for me. It works as is in my projects where I use the library. Also, in my understanding, the root problem is a bug in React Native or in the Babel plugin, as there is nothing wrong with using private class methods in the library.

[berkaydemir6]

You can use SectionList from react native. @thanhnvpk01168

[EnettyTech]

You can use SectionList from react native. @thanhnvpk01168

I had been try it, but still error

[berkaydemir6]

Its have cache problem. Create new project then try on it.

[birdofpreyru]

Hey, looking at @thanhnvpk01168's screenshot of Babel config above, I just now noticed that it is missing to also include

"presets": ["module:metro-react-native-babel-preset"]

without that line, Babel would only use a few plugins mentioned in the babel config, and would not apply the rest of Babel plugins RN relies on. Can it be the root problem you having to make the private methods work for you?

[birdofpreyru]

FYI: After yet another complaint about it (#9) I surrendered, and just released v0.6.0-alpha.4 which gets rid of the private class features for now.