[4.0.0-beta.3] Failed to minify the code

[heikkilamarko]

I am using CRA (create-react-app) for my project. After migrating to 4.0.0-beta.3, the production build started to output the following error:

Creating an optimized production build...
Failed to compile.

Failed to minify the code from this file:

        ../node_modules/mobx/lib/mobx.module.js:4029

Read more here: http://bit.ly/2tRViJ9

[heikkilamarko]

The error goes away if I comment out the following lines from mobx.module.js:

try {
    // define process.env if needed
    // if this is not a production build in the first place
    // (in which case the expression below would be substituted with 'production')
    process.env.NODE_ENV;
}
catch (e) {
    if (typeof process === "undefined")
        (typeof window !== "undefined" ? window : global).process = {};
    process.env = {};
}

[mweststrate]

Should be addressed by mobx@4.0.0-beta.4. Please reopen if it isn't :)

[heikkilamarko]

Beta 4 fixed the problem. Thanks for the quick response :)