fix(scope-manager): correct decorators(.length) check in ClassVisitor…

… for methods (#7334) * fix(scope-manager): correct decorators(.length) check in ClassVisitor for methods * Aha, a missing unit test
typescript-eslint · Jul 29, 2023 · abbb6c2 · abbb6c2
1 parent 076543e
commit abbb6c2
Show file tree

Hide file tree

Showing 4 changed files with 15 additions and 3 deletions.
diff --git a/packages/eslint-plugin/tests/rules/consistent-type-imports.test.ts b/packages/eslint-plugin/tests/rules/consistent-type-imports.test.ts
@@ -536,6 +536,18 @@ ruleTester.run('consistent-type-imports', rule, {
       parserOptions: withMetaConfigParserOptions,
     },
 
+    // https://github.com/typescript-eslint/typescript-eslint/issues/7327
+    {
+      code: `
+        import type { ClassA } from './classA';
+
+        export class ClassB {
+          public constructor(node: ClassA) {}
+        }
+      `,
+      parserOptions: withMetaConfigParserOptions,
+    },
+
     // https://github.com/typescript-eslint/typescript-eslint/issues/2989
     `
 import type * as constants from './constants';

diff --git a/packages/scope-manager/src/referencer/ClassVisitor.ts b/packages/scope-manager/src/referencer/ClassVisitor.ts
@@ -192,7 +192,7 @@ class ClassVisitor extends Visitor {
     if (
       !withMethodDecorators &&
       methodNode.kind === 'constructor' &&
-      this.#classNode.decorators
+      this.#classNode.decorators.length
     ) {
       withMethodDecorators = true;
     }

diff --git a/packages/scope-manager/tests/fixtures/class/emit-metadata/nested-class-inner.ts.shot b/packages/scope-manager/tests/fixtures/class/emit-metadata/nested-class-inner.ts.shot
diff --git a/packages/scope-manager/tests/fixtures/class/emit-metadata/nested-class-outer.ts.shot b/packages/scope-manager/tests/fixtures/class/emit-metadata/nested-class-outer.ts.shot