/**
   * @fileoverview Rule to flag comparisons to null without a type-checking
   * operator.
   * @author Ian Christian Myers
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      return {
  
          "BinaryExpression": function(node) {
              var badOperator = node.operator === "==" || node.operator === "!=";
  
              if (node.right.type === "Literal" && node.right.raw === "null" && badOperator ||
                      node.left.type === "Literal" && node.left.raw === "null" && badOperator) {
                  context.report(node, "Use ‘===’ to compare with ‘null’.");
              }
          }
      };
  
  };
  
  module.exports.schema = [];