fix invalid function signature for event data extraction

Additionally fix specs

test/log-utils.spec.js

@@ -0,0 +1,25 @@
+const { expect } = require('chai')
+const winston = require('winston')
+
+const logUtils = require('../lib/log-utils')
+
+describe('logUtils', () => {
+  it('should create console transport for logging in dev mode', () => {
+    expect(logUtils.createTransports(true)[0])
+      .to.be.instanceOf(winston.transports.Console)
+  })
+
+
+  it('should NOT create console transport for logging in undefined mode', () => {
+    const transports = logUtils.createTransports()
+
+    expect(transports).to.have.length(1)
+    expect(transports[0]).to.be.instanceOf(winston.transports.DailyRotateFile)
+  })
+
+
+  it('should create log rotate transport for logging in dev mode', () => {
+    expect(logUtils.createTransports(true)[1])
+      .to.be.instanceOf(winston.transports.DailyRotateFile)
+  })
+})