fix: put default level threshold to notice

As it's about messages that are important to expose,
altough do not indicate any issue

README.md

@@ -98,7 +98,7 @@ Default visibility depends on the enviroment (see chosen log writer for more inf
 
 ###### `LOG_LEVEL`
 
-(defaults to `warning`) Lowest log level from which (upwards) all logs will be exposed.
+(defaults to `notice`) Lowest log level from which (upwards) all logs will be exposed.
 
 ###### `LOG_DEBUG`
 

test/writer-utils/setup-visibility.js

@@ -120,7 +120,7 @@ test("Logs visibility setup", function (t) {
 		t.end();
 	});
 
-	t.test("Fallbacks to warning level as threshold, if invalid one is provided", function (t) {
+	t.test("Fallbacks to notice level as threshold, if invalid one is provided", function (t) {
 		requireUncached(
 			[require.resolve("../../"), require.resolve("../../writer-utils/setup-visibility")],
 			function () {
@@ -131,8 +131,8 @@ test("Logs visibility setup", function (t) {
 
 		setupEnv("bla", [""]);
 
-		t.equal(log.notice.isEnabled, false);
-		t.equal(log.warning.isEnabled, true);
+		t.equal(log.info.isEnabled, false);
+		t.equal(log.notice.isEnabled, true);
 		t.end();
 	});
 

writer-utils/setup-visibility.js

@@ -13,7 +13,7 @@ module.exports = function (thresholdLevelName, debugNamespacesTokens) {
 	// Resolve intended logging level configuration
 	// On this level and above all logs will be exposed
 	if (!thresholdLevelName || !includes.call(levels, thresholdLevelName)) {
-		thresholdLevelName = "warning";
+		thresholdLevelName = "notice";
 	}
 	var thresholdLevelIndex = levels.indexOf(thresholdLevelName);