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Cannot read property 'mode' of undefined

See original GitHub issue

After adding this plugin to an ejected CRA project I get:

Cannot read property 'mode' of undefined

Are we assuming some particular webpack version?

Issue Analytics

State:
Created 4 years ago
Reactions:2
Comments:15 (7 by maintainers)

Top GitHub Comments

2reactions

pmmmwhcommented, Aug 27, 2020

I reproduced this by adding the Webpack conf, in webpack.config, in resolve.plugins section, not in plugins section
resolve: {
  plugins: [
    new ReactRefreshWebpackPlugin(),
  ],
}
It’s working by putting the configuration in webpack plugins section.

Well I don’t think this is something that we have to deal with … ? All plugins could fail if you use them as resolver plugins?

1reaction

paaacmancommented, Aug 27, 2020

Well I don’t think this is something that we have to deal with … ? All plugins could fail if you use them as resolver plugins?

I totally agree with you, you should not handle this case, it’s a configuration error made by us. I added this comment to help anybody who, like me, made this mistake and look for a solution here 😃