[New] linkAttribute setting, jsx-no-target-blank: support multiple properties

Author: burtek

README.md

@@ -63,12 +63,14 @@ You should also specify settings that will be shared across all the plugin rules
     "formComponents": [
       // Components used as alternatives to <form> for forms, eg. <Form endpoint={ url } />
       "CustomForm",
-      {"name": "Form", "formAttribute": "endpoint"}
+      {"name": "SimpleForm", "formAttribute": "endpoint"},
+      {"name": "Form", "formAttribute": ["registerEndpoint", "loginEndpoint"]}, // allows specifying multiple properties if necessary
     ],
     "linkComponents": [
       // Components used as alternatives to <a> for linking, eg. <Link to={ url } />
       "Hyperlink",
-      {"name": "Link", "linkAttribute": "to"}
+      {"name": "MyLink", "linkAttribute": "to"},
+      {"name": "Link", "linkAttribute": ["to", "href"]}, // allows specifying multiple properties if necessary
     ]
   }
 }

lib/rules/jsx-no-target-blank.js

@@ -5,6 +5,7 @@
 
 'use strict';
 
+const includes = require('array-includes');
 const docsUrl = require('../util/docsUrl');
 const linkComponentsUtil = require('../util/linkComponents');
 const report = require('../util/report');
@@ -48,16 +49,16 @@ function attributeValuePossiblyBlank(attribute) {
   return false;
 }
 
-function hasExternalLink(node, linkAttribute, warnOnSpreadAttributes, spreadAttributeIndex) {
-  const linkIndex = findLastIndex(node.attributes, (attr) => attr.name && attr.name.name === linkAttribute);
+function hasExternalLink(node, linkAttributes, warnOnSpreadAttributes, spreadAttributeIndex) {
+  const linkIndex = findLastIndex(node.attributes, (attr) => attr.name && includes(linkAttributes, attr.name.name));
   const foundExternalLink = linkIndex !== -1 && ((attr) => attr.value && attr.value.type === 'Literal' && /^(?:\w+:|\/\/)/.test(attr.value.value))(
     node.attributes[linkIndex]);
   return foundExternalLink || (warnOnSpreadAttributes && linkIndex < spreadAttributeIndex);
 }
 
-function hasDynamicLink(node, linkAttribute) {
+function hasDynamicLink(node, linkAttributes) {
   const dynamicLinkIndex = findLastIndex(node.attributes, (attr) => attr.name
-    && attr.name.name === linkAttribute
+    && includes(linkAttributes, attr.name.name)
     && attr.value
     && attr.value.type === 'JSXExpressionContainer');
   if (dynamicLinkIndex !== -1) {
@@ -194,9 +195,9 @@ module.exports = {
             }
           }
 
-          const linkAttribute = linkComponents.get(node.name.name);
-          const hasDangerousLink = hasExternalLink(node, linkAttribute, warnOnSpreadAttributes, spreadAttributeIndex)
-            || (enforceDynamicLinks === 'always' && hasDynamicLink(node, linkAttribute));
+          const linkAttributes = linkComponents.get(node.name.name);
+          const hasDangerousLink = hasExternalLink(node, linkAttributes, warnOnSpreadAttributes, spreadAttributeIndex)
+            || (enforceDynamicLinks === 'always' && hasDynamicLink(node, linkAttributes));
           if (hasDangerousLink && !hasSecureRel(node, allowReferrer, warnOnSpreadAttributes, spreadAttributeIndex)) {
             const messageId = allowReferrer ? 'noTargetBlankWithoutNoopener' : 'noTargetBlankWithoutNoreferrer';
             const relValue = allowReferrer ? 'noopener' : 'noreferrer';
@@ -265,11 +266,11 @@ module.exports = {
             return;
           }
 
-          const formAttribute = formComponents.get(node.name.name);
+          const formAttributes = formComponents.get(node.name.name);
 
           if (
-            hasExternalLink(node, formAttribute)
-            || (enforceDynamicLinks === 'always' && hasDynamicLink(node, formAttribute))
+            hasExternalLink(node, formAttributes)
+            || (enforceDynamicLinks === 'always' && hasDynamicLink(node, formAttributes))
           ) {
             const messageId = allowReferrer ? 'noTargetBlankWithoutNoopener' : 'noTargetBlankWithoutNoreferrer';
             report(context, messages[messageId], messageId, {

lib/util/linkComponents.js

@@ -24,9 +24,9 @@ function getFormComponents(context) {
   );
   return new Map(map(iterFrom(formComponents), (value) => {
     if (typeof value === 'string') {
-      return [value, DEFAULT_FORM_ATTRIBUTE];
+      return [value, [DEFAULT_FORM_ATTRIBUTE]];
     }
-    return [value.name, value.formAttribute];
+    return [value.name, [].concat(value.formAttribute)];
   }));
 }
 
@@ -37,9 +37,9 @@ function getLinkComponents(context) {
   );
   return new Map(map(iterFrom(linkComponents), (value) => {
     if (typeof value === 'string') {
-      return [value, DEFAULT_LINK_ATTRIBUTE];
+      return [value, [DEFAULT_LINK_ATTRIBUTE]];
     }
-    return [value.name, value.linkAttribute];
+    return [value.name, [].concat(value.linkAttribute)];
   }));
 }
 

tests/lib/rules/jsx-no-target-blank.js

@@ -102,6 +102,11 @@ ruleTester.run('jsx-no-target-blank', rule, {
       options: [{ enforceDynamicLinks: 'never' }],
       settings: { linkComponents: { name: 'Link', linkAttribute: 'to' } },
     },
+    {
+      code: '<Link target="_blank" to={ dynamicLink }></Link>',
+      options: [{ enforceDynamicLinks: 'never' }],
+      settings: { linkComponents: { name: 'Link', linkAttribute: ['to'] } },
+    },
     {
       code: '<a href="foobar" target="_blank" rel="noopener"></a>',
       options: [{ allowReferrer: true }],
@@ -167,6 +172,14 @@ ruleTester.run('jsx-no-target-blank', rule, {
     {
       code: '<a href={href} target={isExternal ? "_blank" : undefined} rel={isExternal ? "noopener noreferrer" : undefined} />',
     },
+    {
+      code: '<form action={action} />',
+      options: [{ forms: true }],
+    },
+    {
+      code: '<form action={action} {...spread} />',
+      options: [{ forms: true }],
+    },
   ]),
   invalid: parsers.all([
     {
@@ -407,5 +420,20 @@ ruleTester.run('jsx-no-target-blank', rule, {
       options: [{ allowReferrer: true }],
       errors: allowReferrerErrors,
     },
+    {
+      code: '<form action={action} target="_blank" />',
+      options: [{ allowReferrer: true, forms: true }],
+      errors: allowReferrerErrors,
+    },
+    {
+      code: '<form action={action} target="_blank" />',
+      options: [{ forms: true }],
+      errors: defaultErrors,
+    },
+    {
+      code: '<form action={action} {...spread} />',
+      options: [{ forms: true, warnOnSpreadAttributes: true }],
+      errors: defaultErrors,
+    },
   ]),
 });

tests/util/linkComponents.js

@@ -8,7 +8,7 @@ describe('linkComponentsFunctions', () => {
     it('returns a default map of components', () => {
       const context = {};
       assert.deepStrictEqual(linkComponentsUtil.getLinkComponents(context), new Map([
-        ['a', 'href'],
+        ['a', ['href']],
       ]));
     });
 
@@ -19,16 +19,55 @@ describe('linkComponentsFunctions', () => {
           name: 'Link',
           linkAttribute: 'to',
         },
+        {
+          name: 'Link2',
+          linkAttribute: ['to1', 'to2'],
+        },
       ];
       const context = {
         settings: {
           linkComponents,
         },
       };
       assert.deepStrictEqual(linkComponentsUtil.getLinkComponents(context), new Map([
-        ['a', 'href'],
-        ['Hyperlink', 'href'],
-        ['Link', 'to'],
+        ['a', ['href']],
+        ['Hyperlink', ['href']],
+        ['Link', ['to']],
+        ['Link2', ['to1', 'to2']],
+      ]));
+    });
+  });
+
+  describe('getFormComponents', () => {
+    it('returns a default map of components', () => {
+      const context = {};
+      assert.deepStrictEqual(linkComponentsUtil.getFormComponents(context), new Map([
+        ['form', ['action']],
+      ]));
+    });
+
+    it('returns a map of components', () => {
+      const formComponents = [
+        'Form',
+        {
+          name: 'MyForm',
+          formAttribute: 'endpoint',
+        },
+        {
+          name: 'MyForm2',
+          formAttribute: ['endpoint1', 'endpoint2'],
+        },
+      ];
+      const context = {
+        settings: {
+          formComponents,
+        },
+      };
+      assert.deepStrictEqual(linkComponentsUtil.getFormComponents(context), new Map([
+        ['form', ['action']],
+        ['Form', ['action']],
+        ['MyForm', ['endpoint']],
+        ['MyForm2', ['endpoint1', 'endpoint2']],
       ]));
     });
   });