diff --git a/src/declaration-generator.ts b/src/declaration-generator.ts
index ab493c0..1f9379f 100644
--- a/src/declaration-generator.ts
+++ b/src/declaration-generator.ts
@@ -38,7 +38,8 @@ export class DeclarationGenerator {
     return `export type ${typeDef.name} = ${declaration};`;
   }
 
-  generateTypeNode(type: TypeNode, depth: number, _visited: Set<string>): string {
+  generateTypeNode(type: TypeNode, depth: number, _visited: Set<string>): string { // eslint-disable-line @typescript-eslint/no-unused-vars
+    // _visited reserved for future cycle detection
     switch (type.kind) {
       case 'primitive':
         return this.formatPrimitiveType(type);