update

lib/log.js

@@ -0,0 +1,8 @@
+'use strict';
+const on = process.env.CB_LOG === '1';
+
+function devLog(...args)  { if (on) console.log(...args); }
+function devWarn(...args) { if (on) console.warn(...args); }
+function devError(...args) { console.error(...args); } // errors always log
+
+module.exports = { devLog, devWarn, devError, isDev: on };