Add opts.getMessage

Author: ehmicky

src/default.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const { defaultGetLevel } = require('./level')
+const { defaultGetMessage } = require('./message')
 
 // Default `opts.handlerFunc`
 const defaultHandler = function(message, level) {
@@ -10,6 +11,7 @@ const defaultHandler = function(message, level) {
 
 const DEFAULT_OPTS = {
   getLevel: defaultGetLevel,
+  getMessage: defaultGetMessage,
   handlerFunc: defaultHandler,
   exitOnExceptions: true,
 }

src/handle.js

@@ -27,7 +27,7 @@ const handleEvent = async function({
   })
 
   const level = getLevel({ opts, info })
-  const message = getMessage({ ...info, level })
+  const message = getMessage({ opts, info, level })
 
   handlerFunc(message, level, info)
 

src/message.js

@@ -1,10 +1,19 @@
 'use strict'
 
+const { inspect } = require('util')
+
 const { printMultiline, print, prettify } = require('./serialize')
 
 // Retrieve `message` which sums up all information that can be gathered about
 // the event.
-const getMessage = function({
+const getMessage = function({ opts, info, level }) {
+  const message = opts.getMessage({ ...info, level })
+  // Ensure this is a string
+  const messageA = typeof message === 'string' ? message : inspect(message)
+  return messageA
+}
+
+const defaultGetMessage = function({
   eventName,
   promiseState,
   promiseValue,
@@ -70,4 +79,5 @@ const MESSAGES = {
 
 module.exports = {
   getMessage,
+  defaultGetMessage,
 }