typescript-eslint · nayounsang · Jun 27, 2025 · Jun 27, 2025 · Jun 27, 2025
diff --git a/packages/eslint-plugin/src/rules/consistent-generic-constructors.ts b/packages/eslint-plugin/src/rules/consistent-generic-constructors.ts
@@ -123,7 +123,8 @@ export default createRule<Options, MessageIds>({
           return;
         }
 
-        if (lhs?.typeArguments && !rhs.typeArguments) {
+        const isolatedDeclarations = context.parserOptions.isolatedDeclarations;
+        if (!isolatedDeclarations && lhs?.typeArguments && !rhs.typeArguments) {
           const hasParens =
             context.sourceCode.getTokenAfter(rhs.callee)?.value === '(';
           const extraComments = new Set(

diff --git a/packages/eslint-plugin/tests/rules/consistent-generic-constructors.test.ts b/packages/eslint-plugin/tests/rules/consistent-generic-constructors.test.ts
@@ -45,6 +45,16 @@ class A {
     `
 const a = function (a: Foo = new Foo<string>()) {};
     `,
+    {
+      code: `
+const foo: Foo<string> = new Foo();
+      `,
+      languageOptions: {
+        parserOptions: {
+          isolatedDeclarations: true,
+        },
+      },
+    },
     // type-annotation
     {
       code: 'const a = new Foo();',