Plugins error using this module with latest webpack 4.0.0-alpha.0

[Kielan]

I have added to my wepback.common manifest in a typical webpack build using different configurations of loaders, but I think the issue has to do with webpack not reading this plugin properly

  plugins: [
    new ExtractTextPlugin("main.css") //also as {filename:"main.css", allChunks: true},
  ],

The webpack error is

Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
 - configuration.plugins[0] should be one of these:
   object { apply, ... } | function
   -> Plugin of type object or instanceof Function
   Details:
    * configuration.plugins[0] misses the property 'apply'.
      function
      -> The run point of the plugin, required method.
    * configuration.plugins[0] misses the property 'apply'.
      function
      -> The run point of the plugin, required method.
    * configuration.plugins[0] should be an instance of function
      -> Function acting as plugin

when logging the const that I import using require I see the extractText function when I log it. It would appear this import does not satisfy, Function acting as plugin, though it does have a new instance on it

[joshwiens]

@Kielan - This will be taken care of in #676

[Kielan]

https://github.com/Kielan/testWebpackErr

Example repo just for reference, switch webpack versions back and forth and notice the different console logs.

[Kielan]

@d3viant0ne looks like the pr was declined, any update?

[Kielan]

I found out that the issue is that I was using deepmerge dependency, webpack-merge seems to be an up to date alternative dependency https://github.com/survivejs/webpack-merge