Updates winston to version 3.

package.json

@@ -40,7 +40,7 @@
     "express": "^4.14.0",
     "lodash": "^4.15.0",
     "millisecond": "^0.1.2",
-    "winston": "^2.2.0"
+    "winston": "^3.0.0"
   },
   "devDependencies": {
     "babel-cli": "^6.14.0",

src/utils/logger.js

@@ -20,15 +20,34 @@ module.exports = class Logger {
 }
 
 const makeLogger = (options) => {
-  return new (winston.Logger)({
+  return winston.createLogger({
     transports: [
-      new (winston.transports.Console)({
+      new (winston.transports.Console)(convertOptionsToWinstonV3({
         colorize: true,
         level: options.level || 'info'
-      })
-      // @TODO add option to write to a file
-      //        use multi level for an error file etc https://github.com/winstonjs/winston#multiple-transports-of-the-same-type
-      // new (winston.transports.File)({ filename: 'somefile.log' })
+      }))
     ]
   })
 }
+
+function convertOptionsToWinstonV3 (opts) {
+  const newOpts = {}
+  const formatArray = []
+  const formatOptions = {
+    stringify: () => winston.format((info) => { info.message = JSON.stringify(info.message) })(),
+    formatter: () => winston.format((info) => { info.message = opts.formatter(Object.assign(info, opts)) })(),
+    json: () => winston.format.json(),
+    raw: () => winston.format.json(),
+    label: () => winston.format.label(opts.label),
+    logstash: () => winston.format.logstash(),
+    prettyPrint: () => winston.format.prettyPrint({ depth: opts.depth || 2 }),
+    colorize: () => winston.format.colorize({ level: opts.colorize === true || opts.colorize === 'level', all: opts.colorize === 'all', message: opts.colorize === 'message' }),
+    timestamp: () => winston.format.timestamp(),
+    align: () => winston.format.align(),
+    showLevel: () => winston.format((info) => { info.message = info.level + ': ' + info.message })()
+  }
+  Object.keys(opts).filter(k => !formatOptions.hasOwnProperty(k)).forEach((k) => { newOpts[k] = opts[k] })
+  Object.keys(opts).filter(k => formatOptions.hasOwnProperty(k) && formatOptions[k]).forEach(k => formatArray.push(formatOptions[k]()))
+  newOpts.format = winston.format.combine(...formatArray)
+  return newOpts
+}

test/Logger.test.js

@@ -4,10 +4,10 @@ const winston = require('winston')
 
 describe('Logger.test.js', () => {
   it('should instantiate a winston logger', () => {
-    assert.ok(config.logger instanceof winston.Logger)
+    assert.ok(config.logger instanceof winston.createLogger().constructor.__proto__)
   })
 
   it('should use config.logger.global string to set a global var', () => {
-    assert.ok(global['myLoggerVar'] instanceof winston.Logger)
+    assert.ok(global['myLoggerVar'] instanceof winston.createLogger().constructor.__proto__)
   })
 })