get function name change

node_modules/nock/examples/_log.js

@@ -0,0 +1,12 @@
+module.exports = log;
+
+var start = Date.now();
+
+function log(emitter, name) {
+  return function(event) {
+    emitter.on(event, function() {
+      var lag = '' + (Math.round((Date.now() - start) / 100) / 10) + ' sec';
+      console.log('[%s] %s => %s', lag, name, event);
+    });
+  }
+}