text: const isEmpty = require("lodash/isEmpty");
  const findPluginsByName = require("../../utils/ast-utils").findPluginsByName;
  const createOrUpdatePluginByName = require("../../utils/ast-utils")
  	.createOrUpdatePluginByName;
  const safeTraverse = require("../../utils/ast-utils").safeTraverse;
  
  /**
   *
   * Transform which adds context information for old loaders by injecting a `LoaderOptionsPlugin`
   *
   * @param {Object} j - jscodeshift top-level import
   * @param {Node} ast - jscodeshift ast to transform
   * @returns {Node} ast - jscodeshift ast
   *
   */
  
  module.exports = function(j, ast) {
  	const loaderOptions = {};
  
  	// If there is debug: true, set debug: true in the plugin
  	if (ast.find(j.Identifier, { name: "debug" }).size()) {
  		loaderOptions.debug = true;
  		ast
  			.find(j.Identifier, { name: "debug" })
  			.forEach(p => {
  				p.parent.prune();
  			});
  	}
  
  	// If there is UglifyJsPlugin, set minimize: true
  	if (findPluginsByName(j, ast, ["webpack.optimize.UglifyJsPlugin"]).size()) {
  		loaderOptions.minimize = true;
  	}
  
  	return ast
  		.find(j.ArrayExpression)
  		.filter(
  			path =>
  				safeTraverse(path, ["parent", "value", "key", "name"]) === "plugins"
  		)
  		.forEach(path => {
  			!isEmpty(loaderOptions) &&
  				createOrUpdatePluginByName(
  					j,
  					path,
  					"webpack.LoaderOptionsPlugin",
  					loaderOptions
  				);
  		});
  };
  