fix OrderType and OrderSide
diff --git a/ts/src/base/types.ts b/ts/src/base/types.ts
index 84bd4b3295c6..3dddc4fdd525 100644
--- a/ts/src/base/types.ts
+++ b/ts/src/base/types.ts
@@ -198,6 +198,6 @@ export type IndexType = number | string;
 
 export type Int = number;
 
-export type OrderSide = 'buy' | 'sell';
+export type OrderSide = 'buy' | 'sell' | string;
 
-export type OrderType = 'limit' | 'market';
+export type OrderType = 'limit' | 'market' | string;

- sometimes, we support custom values like `stop_market` or `long` so these types must be more inclusive