react-scripts/node_modules/eslint-plugin-react/lib/rules/no-render-return-value.js

Configuration and scripts for Create React App.

/**
 * @fileoverview Prevent usage of the return value of React.render
 * @author Dustan Kasten
 */
'use strict';

var versionUtil = require('../util/version');

// ------------------------------------------------------------------------------
// Rule Definition
// ------------------------------------------------------------------------------

module.exports = function(context) {

  // --------------------------------------------------------------------------
  // Public
  // --------------------------------------------------------------------------

  return {

    CallExpression: function(node) {
      var callee = node.callee;
      var parent = node.parent;
      if (callee.type !== 'MemberExpression') {
        return;
      }

      var calleeObjectName = /^ReactDOM$/;
      if (versionUtil.test(context, '15.0.0')) {
        calleeObjectName = /^ReactDOM$/;
      } else if (versionUtil.test(context, '0.14.0')) {
        calleeObjectName = /^React(DOM)?$/;
      } else if (versionUtil.test(context, '0.13.0')) {
        calleeObjectName = /^React$/;
      }

      if (
        callee.object.type !== 'Identifier' ||
        !calleeObjectName.test(callee.object.name) ||
        callee.property.name !== 'render'
      ) {
        return;
      }

      if (
        parent.type === 'VariableDeclarator' ||
        parent.type === 'Property' ||
        parent.type === 'ReturnStatement' ||
        parent.type === 'ArrowFunctionExpression'
      ) {
        context.report({
          node: callee,
          message: 'Do not depend on the return value from ' + callee.object.name + '.render'
        });
      }
    }
  };

};

module.exports.schema = [];