From 5d054950f3d4cba285df25ca23e8dff9a1a50533 Mon Sep 17 00:00:00 2001
From: "Supanat K." <supanat.ko@secplayground.com>
Date: Mon, 12 Jan 2026 14:32:57 +0700
Subject: [PATCH] fix: add TypeScript types for Sequelize DataTypes

---
 types/sequelize/index.d.ts | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/types/sequelize/index.d.ts b/types/sequelize/index.d.ts
index 38107a9..bd85efb 100644
--- a/types/sequelize/index.d.ts
+++ b/types/sequelize/index.d.ts
@@ -1,3 +1,38 @@
+import type { DataType } from 'sequelize';
+
+// VECTOR data type constructor
+export interface VectorDataTypeConstructor {
+  new (dimensions?: number): DataType;
+  (dimensions?: number): DataType;
+}
+
+// HALFVEC data type constructor
+export interface HalfvecDataTypeConstructor {
+  new (dimensions?: number): DataType;
+  (dimensions?: number): DataType;
+}
+
+// SPARSEVEC data type constructor
+export interface SparsevecDataTypeConstructor {
+  new (dimensions?: number): DataType;
+  (dimensions?: number): DataType;
+}
+
+// Module augmentation to extend Sequelize DataTypes
+declare module 'sequelize' {
+  namespace DataTypes {
+    const VECTOR: VectorDataTypeConstructor;
+    const HALFVEC: HalfvecDataTypeConstructor;
+    const SPARSEVEC: SparsevecDataTypeConstructor;
+    
+    namespace postgres {
+      const VECTOR: VectorDataTypeConstructor;
+      const HALFVEC: HalfvecDataTypeConstructor;
+      const SPARSEVEC: SparsevecDataTypeConstructor;
+    }
+  }
+}
+
 export function registerType(Sequelize: any): void;
 export function registerTypes(Sequelize: any): void;
 export function l2Distance(column: any, value: any, sequelize: any): any;