feat: allow globally overriding silent via env var LAMBDALOG_SILENT

Author: taschmidt

lib/LambdaLog.js

@@ -58,7 +58,7 @@ class LambdaLog extends EventEmitter {
             dynamicMeta: null,
             debug: false,
             dev: false,
-            silent: false,
+            silent: typeof process.env.LAMBDALOG_SILENT !== 'undefined',
             replacer: null,
             logHandler: console
         }, options);

test/lambdaLog.js

@@ -33,6 +33,15 @@ describe('LambdaLog', function() {
             assert(log.options.silent === true);
         });
 
+        it('should allow overriding silent via LAMBDALOG_SILENT variable', () => {
+            let oldVal = process.env.LAMBDALOG_SILENT;
+            process.env.LAMBDALOG_SILENT = true;
+            let log = new LambdaLog();
+        
+            assert(log.options.silent === true);
+            process.env.LAMBDALOG_SILENT = oldVal;
+        })
+
         describe('Log Levels', function() {
             describe('Default', () => {
                 let log = new LambdaLog();