Optimizations (#4135)

* removes costly json serialization to InMemoryCacheAdapter

* Always cache a copy of the array

* Use own mapValues

* Makes sure we dont make unnecessary calls to the logger

* Do not bypass loggers with silent logging (only applies to stdout)

* warn is not warning

* use ===

* Wrap logRequest / logResponse in the loggerController for more granular control

Also give the ability to pass functions to the logger so we don't serialize too early in JSON (costly)

* reconfiguring winston would override the transports levels and make subsequent tests fail

src/logger.js

@@ -4,12 +4,13 @@ import { WinstonLoggerAdapter } from './Adapters/Logger/WinstonLoggerAdapter';
 import { LoggerController }     from './Controllers/LoggerController';
 
 function defaultLogger() {
-  const adapter = new WinstonLoggerAdapter({
+  const options = {
     logsFolder: defaults.logsFolder,
     jsonLogs: defaults.jsonLogs,
     verbose: defaults.verbose,
-    silent: defaults.silent });
-  return new LoggerController(adapter);
+    silent: defaults.silent };
+  const adapter = new WinstonLoggerAdapter(options);
+  return new LoggerController(adapter, null, options);
 }
 
 let logger = defaultLogger();