BABEL Note: The code generator has deoptimised the styling of “app.js” as it exceeds the max of "100KB in Meteor

Question

My app.js file in meteor has exceeded the limit of 100KB How do I fix this now? Does It affects my application? Is that because of installing packages?

Answer 1

This is not a real issue. Just a warning. When babel compiles some code, it try to offer a readable output, but when files become big (>100KB), babel considers (by default) that it's not useful to keep this option enabled (because yes it's an option, see https://stackoverflow.com/a/30879872/988941 for more information).

It's not a problem to keep it. If you don't care about readability, you can just use compact: true. Or false if you do. Only "auto" value (default value) will print this warning.

Answer 2

At first for more explanation read the Babel documentation on Options.

It is a common option of Babel compiler that commands not include superfluous whitespace characters and line terminators. sometimes ago its threshold was 100KB but now is 500KB.

And I advise to you disable this option in your development environment, with this code in .babelrc file.

{
    "env": {
      "development" : {
        "compact": false
      }
    }
}

For production environment Babel use the default config which is auto.