react-scripts/node_modules/eslint-plugin-jsx-a11y/lib/rules/tabindex-no-positive.js

Configuration and scripts for Create React App.

'use strict';

var _jsxAstUtils = require('jsx-ast-utils');

var errorMessage = 'Avoid positive integer values for tabIndex.'; /**
                                                                   * @fileoverview Enforce tabIndex value is not greater than zero.
                                                                   * @author Ethan Cohen
                                                                   */

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

module.exports = function (context) {
  return {
    JSXAttribute: function JSXAttribute(attribute) {
      var name = (0, _jsxAstUtils.propName)(attribute);
      var normalizedName = name ? name.toUpperCase() : '';

      // Check if tabIndex is the attribute
      if (normalizedName !== 'TABINDEX') {
        return;
      }

      // Only check literals because we can't infer values from certain expressions.
      var value = Number((0, _jsxAstUtils.getLiteralPropValue)(attribute));

      if (isNaN(value) || value <= 0) {
        return;
      }

      context.report({
        node: attribute,
        message: errorMessage
      });
    }
  };
};

module.exports.schema = [{ type: 'object' }];