Deprecation warning

[kayinortin]

Hi! 👋

Firstly, thanks for your work on this project! 🙂

Today I used patch-package to patch strong-log-transformer@2.1.0 for the project I'm working on.

Here is the diff that solved my problem:

diff --git a/node_modules/strong-log-transformer/lib/logger.js b/node_modules/strong-log-transformer/lib/logger.js
index 69218a8..8d6554b 100644
--- a/node_modules/strong-log-transformer/lib/logger.js
+++ b/node_modules/strong-log-transformer/lib/logger.js
@@ -29,7 +29,7 @@ var formatters = {
 
 function Logger(options) {
   var defaults = JSON.parse(JSON.stringify(Logger.DEFAULTS));
-  options = util._extend(defaults, options || {});
+  options = Object.assign(defaults, options || {});
   var catcher = deLiner();
   var emitter = catcher;
   var transforms = [

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