5.0.8 breaks IE11

[Grzegorz-PC-x]

I recently updated @storybook/react to v5.1.11 and storybook-readme to 5.0.8 (from v4).
Unfortunately after adding import { addReadme } from 'storybook-readme/html'; to my project, SB in IE11 is totally broken.

From what I can see SB contains an arrow function in vendor file. It happens only if storybook-readme is included.

To reproduce innit a clean Storybook example code and add the above import in config.js

Please fix the issue or provide walkaround as this stops my upgrade to SB5.

[natterstefan]

Hi @Grzegorz-PC-x,

we are experiencing the same issue. After some research, we found out it's related to an issue reported in algolia/react-element-to-jsx-string#387 (another storybook addon has the same issue, eg. storybookjs/addon-jsx#20).

Unfortunately, adding this to the webpack.config.js did not (yet) resolve our issue:

Some of the dependencies that this package has use APIs not available in IE11. To get around this you can add the following to your webpack.config.js file (your paths might be slightly different):

config.module.rules.push({
  test: /\.js/,
  include: path.resolve(__dirname, '../node_modules/stringify-object'),
  use: [
    {
      loader: 'babel-loader',
      options: {
        presets: ['env']
      }
    }
  ]
});

Source: https://github.com/storybookjs/addon-jsx#usage-with-ie11

Until it's fixed we most likely downgrade storybook-readme.

At this point, I want to ask and highlight, that documenting changes in a CHANGELOG or in the release tab would be highly appreciated @tuchk4. Without them, it's always a hassle to update and debug undocumented releases of packages. Besides that, I appreciate your work.