react and redux error on production env

Question

I receive this errors from react and redux when I tried to deploy my test app. But these errors don't appear on my local machine.

But then I realized that my local machine is not using the minified version of the bundle (but my deployed app is using the minified version), so I minified the bundle, then boom! the errors appeared. Any idea why this happens and how it can be fixed?

Thanks in advance for those who would help.

Answer 1

Okay I get it.

So when minified, react is looking for the process.env.NODE_ENV and checking whether it is set to production. there are two solutions for this:

Solution one

The easiest way of doing this (if you're using webpack, which is, I am) is to run webpack --define process.env.NODE_ENV='\"production\"' which will take care of it for you.

Solution two

is to add these on your plugins in your webpack.config.js file.

new webpack.DefinePlugin({
    'process.env': {
        NODE_ENV: JSON.stringify('production')
    }
})