WIP - add extractor, generate snippet_data

node_modules/eslint-plugin-jsx-a11y/lib/rules/no-redundant-roles.js

@@ -0,0 +1,81 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+var _jsxAstUtils = require("jsx-ast-utils");
+
+var _arrayIncludes = _interopRequireDefault(require("array-includes"));
+
+var _has = _interopRequireDefault(require("has"));
+
+var _getExplicitRole = _interopRequireDefault(require("../util/getExplicitRole"));
+
+var _getImplicitRole = _interopRequireDefault(require("../util/getImplicitRole"));
+
+/**
+ * @fileoverview Enforce explicit role property is not the
+ * same as implicit/default role property on element.
+ * @author Ethan Cohen <@evcohen>
+ * 
+ */
+// ----------------------------------------------------------------------------
+// Rule Definition
+// ----------------------------------------------------------------------------
+var errorMessage = function errorMessage(element, implicitRole) {
+  return "The element ".concat(element, " has an implicit role of ").concat(implicitRole, ". Defining this explicitly is redundant and should be avoided.");
+};
+
+var DEFAULT_ROLE_EXCEPTIONS = {
+  nav: ['navigation']
+};
+module.exports = {
+  meta: {
+    docs: {
+      url: 'https://github.com/evcohen/eslint-plugin-jsx-a11y/tree/master/docs/rules/no-redundant-roles.md'
+    },
+    schema: [{
+      type: 'object',
+      additionalProperties: {
+        type: 'array',
+        items: {
+          type: 'string'
+        },
+        uniqueItems: true
+      }
+    }]
+  },
+  create: function create(context) {
+    var options = context.options;
+    return {
+      JSXOpeningElement: function JSXOpeningElement(node) {
+        var type = (0, _jsxAstUtils.elementType)(node);
+        var implicitRole = (0, _getImplicitRole["default"])(type, node.attributes);
+        var explicitRole = (0, _getExplicitRole["default"])(type, node.attributes);
+
+        if (!implicitRole || !explicitRole) {
+          return;
+        }
+
+        if (implicitRole === explicitRole) {
+          var allowedRedundantRoles = options[0] || {};
+          var redundantRolesForElement;
+
+          if ((0, _has["default"])(allowedRedundantRoles, type)) {
+            redundantRolesForElement = allowedRedundantRoles[type];
+          } else {
+            redundantRolesForElement = DEFAULT_ROLE_EXCEPTIONS[type] || [];
+          }
+
+          if ((0, _arrayIncludes["default"])(redundantRolesForElement, implicitRole)) {
+            return;
+          }
+
+          context.report({
+            node,
+            message: errorMessage(type, implicitRole.toLowerCase())
+          });
+        }
+      }
+    };
+  }
+};