chore: Improve type safety

freqtrade/exchange/exchange.py

@@ -1027,7 +1027,6 @@ class Exchange:
             "status": "open",
             "fee": None,
             "info": {},
-            "leverage": leverage,
         }
         if stop_loss:
             dry_order["info"] = {"stopPrice": dry_order["price"]}
@@ -1552,7 +1551,9 @@ class Exchange:
         return order.get("status") in NON_OPEN_EXCHANGE_STATES and order.get("filled") == 0.0
 
     @retrier
-    def cancel_order(self, order_id: str, pair: str, params: Optional[dict] = None) -> dict:
+    def cancel_order(
+        self, order_id: str, pair: str, params: Optional[dict] = None
+    ) -> dict[str, Any]:
         if self._config["dry_run"]:
             try:
                 order = self.fetch_dry_run_order(order_id)

freqtrade/exchange/exchange_types.py

@@ -1,4 +1,4 @@
-from typing import Any, Optional, TypedDict
+from typing import Any, Literal, Optional, TypedDict
 
 from freqtrade.enums import CandleType
 
@@ -44,7 +44,7 @@ class FtHas(TypedDict, total=False):
     funding_fee_timeframe: str
     floor_leverage: bool
     needs_trading_fees: bool
-    order_props_in_contracts: list[str]
+    order_props_in_contracts: list[Literal["amount", "cost", "filled", "remaining"]]
 
     # Websocket control
     ws_enabled: bool

freqtrade/exchange/gate.py

@@ -2,7 +2,7 @@
 
 import logging
 from datetime import datetime
-from typing import Any, Optional
+from typing import Optional
 
 from freqtrade.constants import BuySell
 from freqtrade.enums import MarginMode, PriceType, TradingMode

freqtrade/exchange/okx.py

@@ -1,6 +1,6 @@
 import logging
 from datetime import timedelta
-from typing import Any, Optional
+from typing import Optional
 
 import ccxt