message: Minor codestyle fixes in `LogDecorator`
diff: @@ -18,17 +18,18 @@ export function log(target: Object, key: string, descriptor: any) {
  const originalMethod = descriptor.value;
  descriptor.value = function (this: any, ...args: any[]) {
  - var formatArgs = args.map(repr).join(", ");
  + const formatArgs = args.map(repr).join(", ");
  + let result: any;
  if ("_log" in this) {
  const logger = <Logger>this._log;
  logger.debug(`\u2b9e Entering ${key}(${formatArgs})`);
  - var result = originalMethod.apply(this, args);
  + result = originalMethod.apply(this, args);
  logger.debug(`\u2b9c Exiting ${key}(${formatArgs}) => ${repr(result)}`);
  } else {
  console.log(`\u2b9e Entering ${key}(${formatArgs})`);
  - var result = originalMethod.apply(this, args);
  + result = originalMethod.apply(this, args);
  console.log(`\u2b9c Exiting ${key}(${formatArgs}) => ${repr(result)}`);
  }
  return result;
  