diff --git a/server/api/decorator/base.d.ts b/server/api/decorator/base.d.ts
deleted file mode 100644
index deb54ec..0000000
--- a/server/api/decorator/base.d.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-
-type C = (...args: any) => any;
-type Rev<A> = ()=> A;
-
-type ChainResult<T> =
-    T extends [infer R0 extends C] ? ReturnType<R0> :
-    T extends [infer R1 extends C, infer R0 extends C] ? ReturnType<R1> & ReturnType<R0> :
-    T extends [infer R2, infer R1, ...infer RX] ? ChainResult2<R2, R1, ChainResult<[R2, R1]>, ChainResult<[Rev<ChainResult<[R2, R1]>>, ...RX]>> :
-    never;
-
-type ChainResult2<A, B, T, ANS> = T extends ChainResult<[A, B]> ? ANS: never;
-
-declare function DeclConverter<R0 extends C>(r0: R0): [[R0], ReturnType<R0>];
-declare function DeclConverter<R0, R1>(r0: R0, r1: R1): [[R0, R1], ChainResult<[R0, R1]>];
-declare function DeclConverter<R0, R1, R2>(r0: R0, r1: R1, r2:R2) : [[R0, R1, R2], ChainResult<[R0, R1, R2]>];
-declare function DeclConverter<R0, R1, R2, R3>(r0: R0, r1: R1, r2:R2, r3:R3) : [[R0, R1, R2, R3], ChainResult<[R0, R1, R2, R3]>];
-declare function DeclConverter<R0, R1, R2, R3, R4>(r0: R0, r1: R1, r2:R2, r3:R3, r4:R4) : [[R0, R1, R2, R3, R4], ChainResult<[R0, R1, R2, R3, R4]>];
diff --git a/server/api/decorator/base.ts b/server/api/decorator/base.ts
index 4e961e4..b5a8d13 100644
--- a/server/api/decorator/base.ts
+++ b/server/api/decorator/base.ts
@@ -2,7 +2,7 @@ import { Request, Response, NextFunction } from "express";
 import { ReqLogin } from "./reqLogin";
 import { ReqGameLogin } from "./reqGameLogin";
 import { ParseUserLevel } from "./ParseUserLevel";
-
+import { DeclConverter } from "./base2";
 export type InvalidConversion = {
     isInvalid: true;
     reason?: string;
diff --git a/server/api/decorator/base2.d.ts b/server/api/decorator/base2.d.ts
new file mode 100644
index 0000000..fefa0f1
--- /dev/null
+++ b/server/api/decorator/base2.d.ts
@@ -0,0 +1,17 @@
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+type C = (...args: any) => any;
+type Rev<A> = ()=> A;
+
+type ChainResult<T> =
+    T extends [infer R0 extends C] ? ReturnType<R0> :
+    T extends [infer R1 extends C, infer R0 extends C] ? ReturnType<R1> & ReturnType<R0> :
+    T extends [infer R2, infer R1, ...infer RX] ? ChainResult2<R2, R1, ChainResult<[R2, R1]>, ChainResult<[Rev<ChainResult<[R2, R1]>>, ...RX]>> :
+    never;
+
+type ChainResult2<A, B, T, ANS> = T extends ChainResult<[A, B]> ? ANS: never;
+
+export function DeclConverter<R0 extends C>(r0: R0): [[R0], ReturnType<R0>];
+export function DeclConverter<R0, R1>(r0: R0, r1: R1): [[R0, R1], ChainResult<[R0, R1]>];
+export function DeclConverter<R0, R1, R2>(r0: R0, r1: R1, r2:R2) : [[R0, R1, R2], ChainResult<[R0, R1, R2]>];
+export function DeclConverter<R0, R1, R2, R3>(r0: R0, r1: R1, r2:R2, r3:R3) : [[R0, R1, R2, R3], ChainResult<[R0, R1, R2, R3]>];
+export function DeclConverter<R0, R1, R2, R3, R4>(r0: R0, r1: R1, r2:R2, r3:R3, r4:R4) : [[R0, R1, R2, R3, R4], ChainResult<[R0, R1, R2, R3, R4]>];
diff --git a/server/api/decorator/base2.js b/server/api/decorator/base2.js
new file mode 100644
index 0000000..3b453ca
--- /dev/null
+++ b/server/api/decorator/base2.js
@@ -0,0 +1,3 @@
+export function DeclConverter(...target){
+    return [target, undefined];
+}
\ No newline at end of file