Handle edge case <component is="div" />

Author: jesusgn90

Diff for: lib/rules/no-unregistered-components.js

@@ -97,6 +97,7 @@ module.exports = {
         }
       },
       "VAttribute[directive=false][key.name='is']" (node) {
+        if (utils.isHtmlWellKnownElementName(node.value.value)) return
         usedComponentNodes.push({ node, name: node.value.value })
       },
       "VElement[name='template']" (rootNode) {

Diff for: tests/lib/rules/no-unregistered-components.js

@@ -261,6 +261,42 @@ tester.run('no-unregistered-components', rule, {
         </template>
       `
     },
+    {
+      filename: 'test.vue',
+      code: `
+        <template>
+          <component is="div" />
+        </template>
+      `
+    },
+    {
+      filename: 'test.vue',
+      code: `
+        <template>
+          <component is="span">
+            Text
+          </component>
+        </template>
+      `
+    },
+    {
+      filename: 'test.vue',
+      code: `
+        <template>
+          <Component is="div" />
+        </template>
+      `
+    },
+    {
+      filename: 'test.vue',
+      code: `
+        <template>
+          <Component is="span">
+            Text
+          </Component>
+        </template>
+      `
+    },
     {
       filename: 'test.vue',
       code: `