@sentry/browser fails on Babel minification since 5.29.1

[didnotwant]

• Review the documentation: https://docs.sentry.io/
• Search for existing issues: https://github.com/getsentry/sentry-javascript/issues
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Package + Version

• @sentry/browser
• @sentry/node
• raven-js
• raven-node (raven for node)
• other:

Version:

6.2.2

Description

I’m updating Sentry to the latest version in one of my custom libraries for errors reporting (which uses Sentry as a dependency).

The problem I noticed after the update to 6.2.2 (current latest) is that I wasn't able to compile it (I use Webpack and Babel) the code with success — it actually succeeded but an error at the end occurred:

  [45] ./src/index.js + 153 modules 567 kB {0} [built]
    + 51 hidden modules

ERROR in unknown: Invalid typeof value
npm ERR! code ELIFECYCLE

After deeper investigation it turned out that it’s because Babel doesn’t know (yet) the bigint type in their compilation process:
https://github.com/babel/babel/blob/4b674ea0319340be7b0ccd53f52dc80f4ebaca04/packages/babel-types/src/builders/flow/createTypeAnnotationBasedOnTypeof.ts#L15-L22
and the bigint exists in Sentry Browser since 5.29.1: #3108

My workaround is to disable simplify option (which is enabled by default and causes the whole package code recompilation, in my case the imported Sentry Browser’s code as well) in babel-minify-webpack-plugin:

// webpack.config.js

const MinifyPlugin = require('babel-minify-webpack-plugin');

module.exports = {
  ...
  plugins: [
    new MinifyPlugin({
      simplify: false,
    }, {})
  ],
};

Note: This issue is not a problem with Sentry itself — I’m just pointing out and sharing the wider landscape of possible bug. I believe it could help the others who use similiar stack. I spent enough time on investigation so it deserves describing. And I think this is the proper place for it.

[alex-paterson]

Currently experiencing something similar trying to use sentry-react. Coincidence that you opened this 3 hours ago, thanks for explaining the issue in more detail.

[kamilogorek]

babel-minify-webpack-plugin is already deprecated in favor of terser-webpack-plugin which supports bigint just fine.
However, I'm glad you pointed this out here with a possible working out. Thanks!

As for the issue itself, because it's supported in the recommended plugin, we'll leave it as is for now. Cheers!