fix(no-undef-components): report error on type-only imports

Author: lihongda03

lib/rules/no-undef-components.js

@@ -130,7 +130,16 @@ module.exports = {
           (scope) => scope.type === 'module'
         )
         for (const variable of (moduleScope && moduleScope.variables) || []) {
-          scriptVariableNames.add(variable.name)
+          const definition = variable.defs[0]
+          if (
+            !(
+              (definition.parent?.type === 'ImportDeclaration' &&
+                definition.parent?.importKind === 'type') ||
+              definition.node.importKind === 'type'
+            )
+          ) {
+            scriptVariableNames.add(variable.name)
+          }
         }
       }
       /**

tests/lib/rules/no-undef-components.js

@@ -661,6 +661,65 @@ tester.run('no-undef-components', rule, {
         }
       ]
     },
+    {
+      filename: 'test.vue',
+      code: `
+      <script setup lang="ts">
+        import type Foo from './Foo.vue'
+        import type {HelloWorld1} from './components/HelloWorld'
+        import  { type HelloWorld2 } from './components/HelloWorld2'
+        import type {HelloWorld as HelloWorld3} from './components/HelloWorld3'
+        import  { type HelloWorld as HelloWorld4 } from './components/HelloWorld4';
+        import  { type default as HelloWorld5 } from './components/HelloWorld5';
+      </script>
+
+      <template>
+        <Foo />
+        <HelloWorld1 />
+        <HelloWorld2 />
+        <HelloWorld3 />
+        <HelloWorld4 />
+        <HelloWorld5 />
+      </template>
+      `,
+      parserOptions: {
+        ecmaVersion: 6,
+        sourceType: 'module',
+        parser: require.resolve('@typescript-eslint/parser')
+      },
+      parser: require.resolve('vue-eslint-parser'),
+      errors: [
+        {
+          message: "The '<Foo>' component has been used, but not defined.",
+          line: 12
+        },
+        {
+          message:
+            "The '<HelloWorld1>' component has been used, but not defined.",
+          line: 13
+        },
+        {
+          message:
+            "The '<HelloWorld2>' component has been used, but not defined.",
+          line: 14
+        },
+        {
+          message:
+            "The '<HelloWorld3>' component has been used, but not defined.",
+          line: 15
+        },
+        {
+          message:
+            "The '<HelloWorld4>' component has been used, but not defined.",
+          line: 16
+        },
+        {
+          message:
+            "The '<HelloWorld5>' component has been used, but not defined.",
+          line: 17
+        }
+      ]
+    },
 
     // options API
     {

typings/eslint-plugin-vue/util-types/ast/es-ast.ts

@@ -268,6 +268,7 @@ export interface ImportDeclaration extends HasParentNode {
     | ImportNamespaceSpecifier
   )[]
   source: Literal & { value: string }
+  importKind?: 'type' | 'value'
 }
 export interface ImportSpecifier extends HasParentNode {
   type: 'ImportSpecifier'