index.js

export default async function importRawSource(context, opts) {
  return {
    // A compulsory field used as the namespace for directories to cache
    // the intermediate data for each plugin.
    // If you're writing your own local plugin, you will want it to
    // be unique in order not to potentially conflict with imported plugins.
    // A good way will be to add your own project name within.
    name: 'docusaurus-reactodia-configure-webpack',

    configureWebpack(config, isServer, utils) {
      return {
        devtool: 'source-map',
        module: {
          rules: [
            {
              test: /\.js$/,
              enforce: 'pre',
              use: [
                {
                  loader: 'source-map-loader',
                }
              ]
            },
          ],
        },
      };
    }
  }
}