refactor: replace useDemoTrading with demoTrading in RestClientOptions for consistency

src/util/BaseRestClient.ts

@@ -92,7 +92,6 @@ export default abstract class BaseRestClient {
   constructor(
     restOptions: RestClientOptions = {},
     networkOptions: AxiosRequestConfig = {},
-    useDemoTrading: boolean = false,
   ) {
     this.options = {
       recvWindow: 5000,
@@ -111,7 +110,7 @@ export default abstract class BaseRestClient {
         'X-CHANNEL-API-CODE': 'hbnni',
         'Content-Type': 'application/json',
         locale: 'en-US',
-        ...(useDemoTrading ? { paptrading: '1' } : {}),
+        ...(restOptions.demoTrading ? { paptrading: '1' } : {}),
       },
     };
 

src/util/requestUtils.ts

@@ -11,6 +11,13 @@ export interface RestClientOptions {
   /** Set to `true` to connect to testnet. Uses the live environment by default. */
   // testnet?: boolean;
 
+  /**
+   * Set to `true` to use Bitget's demo trading: https://www.bitget.com/api-doc/common/demotrading/restapi.
+   *
+   * Disabled by default.
+   */
+  demoTrading?: boolean;
+
   /** Override the max size of the request window (in ms) */
   recvWindow?: number;