Backend: Bumping Typescript version to 4.4.2 (#748)

* Backend: Bumping Typescript version to 4.4.2

* Replacing any types with instanceOf checks.

backend/src/api/bisq/bisq.ts

@@ -162,7 +162,7 @@ class Bisq {
       this.buildIndex();
       this.calculateStats();
     } catch (e) {
-      logger.info('loadBisqDumpFile() error.' + e.message || e);
+      logger.info('loadBisqDumpFile() error.' + (e instanceof Error ? e.message : e));
     }
   }
 

backend/src/api/bisq/markets.ts

@@ -102,7 +102,7 @@ class Bisq {
         logger.debug('Bisq market data updated in ' + time + ' ms');
       }
     } catch (e) {
-      logger.err('loadBisqMarketDataDumpFile() error.' + e.message || e);
+      logger.err('loadBisqMarketDataDumpFile() error.' + (e instanceof Error ? e.message : e));
     }
   }