webpack.plugins.js

const webpack = require('webpack');
const CircularDependencyPlugin = require('circular-dependency-plugin')

module.exports = [

  // new webpack.IgnorePlugin(/\/something$/),            // Ignore something
  // new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/), // Ignore Moment's locale

  new CircularDependencyPlugin({
    // `onStart` is called before the cycle detection starts
    onStart({compilation}) {
      console.log('start detecting webpack modules cycles');
    },
    // `onDetected` is called for each module that is cyclical
    onDetected({module: webpackModuleRecord, paths, compilation}) {
      // `paths` will be an Array of the relative module paths that make up the cycle
      // `module` will be the module record generated by webpack that caused the cycle
      if (paths[0].indexOf('node_modules/') > -1) return; // ignore node_modules
      compilation.errors.push(new Error(paths.join(' -> ')))
    },
    // `onEnd` is called before the cycle detection ends
    onEnd({compilation}) {
      console.log('end detecting webpack modules cycles');
    },
  }),

];