feat(v4.1.16): add keepAlive, add lint script, edit lint errors

src/types/index.ts

@@ -5,4 +5,3 @@ export * from './response/v5-spreadtrading';
 export * from './shared';
 export * from './shared-v5';
 export * from './websockets';
-

src/util/BaseRestClient.ts

@@ -138,9 +138,17 @@ export default abstract class BaseRestClient {
 
     // If enabled, configure a https agent with keepAlive enabled
     if (this.options.keepAlive) {
+      // Extract existing https agent parameters, if provided, to prevent the keepAlive flag from overwriting
+      // an existing https agent completely
+      const existingHttpsAgent = this.globalRequestOptions.httpsAgent as
+        | https.Agent
+        | undefined;
+      const existingAgentOptions = existingHttpsAgent?.options || {};
+
       // For more advanced configuration, raise an issue on GitHub or use the "networkOptions"
       // parameter to define a custom httpsAgent with the desired properties
       this.globalRequestOptions.httpsAgent = new https.Agent({
+        ...existingAgentOptions,
         keepAlive: true,
         keepAliveMsecs: this.options.keepAliveMsecs,
       });

src/websocket-client.ts

@@ -751,6 +751,7 @@ export class WebsocketClient extends BaseWebsocketClient<
 
         if (!reqId) {
           this.logger.error(
+            // eslint-disable-next-line max-len
             'WS API response is missing reqId - promisified workflow could get stuck. If this happens, please get in touch with steps to reproduce. Trace:',
             {
               wsKey,