/**
   * @fileoverview Rule to flag when deleting variables
   * @author Ilya Volodin
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = {
      meta: {
          docs: {
              description: "disallow deleting variables",
              category: "Variables",
              recommended: true
          },
  
          schema: []
      },
  
      create(context) {
  
          return {
  
              UnaryExpression(node) {
                  if (node.operator === "delete" && node.argument.type === "Identifier") {
                      context.report({ node, message: "Variables should not be deleted." });
                  }
              }
          };
  
      }
  };