Release code should not work in development mode, React native

Question

HI I want to run some code only when It is a production build like sentry or google analystics .

if(__DEV__) {
    this.setState({username: 'Niel', password: 'Test'});
}

__DEV__ gives me undefined variable name.

Is not working.

can someone help me out of it?

Thanks

score 0 · Accepted Answer · answered Dec 07 '20 at 09:46

0

Removing .babelrc seems to fix the problem.

My .babelrc:

{ "presets": ["react-native"] }

answered Dec 07 '20 at 09:46

Nooruddin Lakhani

I don;t have such file, but i have babel.config.js file DO i make changes in that ? – cakePHP Dec 07 '20 at 09:51
What do you have in your `babel.config.js`? – Konstantin Dec 07 '20 at 09:53
@cakePHP make changes in it and try – Nooruddin Lakhani Dec 07 '20 at 10:28
@Konstantin, it has module.exports = { presets: ['module:metro-react-native-babel-preset'], }; – cakePHP Dec 07 '20 at 10:34
Do you have `metro-react-native-babel-preset` in your devDependencies? – Konstantin Dec 07 '20 at 10:45

1 Answers1