Handling 0 < X < 30 expiration time check.

Author: Chriztiaan

packages/common/src/client/sync/stream/AbstractRemote.ts

@@ -21,8 +21,6 @@ export type RemoteConnector = {
 const POWERSYNC_TRAILING_SLASH_MATCH = /\/+$/;
 const POWERSYNC_JS_VERSION = PACKAGE.version;
 
-// Refresh at least 30 sec before it expires
-const REFRESH_CREDENTIALS_SAFETY_PERIOD_MS = 30_000;
 const SYNC_QUEUE_REQUEST_LOW_WATER = 5;
 
 // Keep alive message is sent every period

packages/common/src/client/sync/stream/AbstractStreamingSyncImplementation.ts

@@ -691,6 +691,11 @@ The next upload iteration will be delayed.`);
                */
               await this.delayRetry();
               return;
+            } else if (remaining_seconds < 30) {
+              this.logger.debug('Token will expire soon; reconnect');
+              // Pre-emptively refresh the token
+              this.options.remote.invalidateCredentials();
+              return;
             }
             this.triggerCrudUpload();
           } else {