JAVASCRIPT

use jquery in project using NPM

// webpack.config.js
const webpack = require('webpack')

module.exports = {
  entry: [
    // entry bits
  ],
  output: {
    // output bits
  },
  module: {
    rules: [
      // any other rules
      {
        // Exposes jQuery for use outside Webpack build
        test: require.resolve('jquery'),
        use: [{
          loader: 'expose-loader',
          options: 'jQuery'
        },{
          loader: 'expose-loader',
          options: '$'
        }]
      }
    ]
  },
  plugins: [
    // Provides jQuery for other JS bundled with Webpack
    new webpack.ProvidePlugin({
      $: 'jquery',
      jQuery: 'jquery'
    })
  ]
}