text: /**
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   *
   * @emails react-core
   */
  
  'use strict';
  
  module.exports = function(context) {
    return {
      Identifier(node) {
        if (node.name === 'toWarnDev') {
          let current = node;
          while (current.parent) {
            if (current.type === 'CallExpression') {
              if (
                current &&
                current.callee &&
                current.callee.property &&
                current.callee.property.name === 'toThrow'
              ) {
                context.report(node, 'toWarnDev() matcher should not be nested');
              }
            }
            current = current.parent;
          }
        }
      },
    };
  };
  