fix(config): Simpilfy error proceesing. (#3345)

Fixes#3339

Author: johnjbarton

lib/config.js

@@ -353,19 +353,15 @@ function parseConfig (configFilePath, cliOptions) {
 configModule=configModule.default
 }
 }catch(e){
-if(e.code==='MODULE_NOT_FOUND'&&e.message.includes(configFilePath)){
-log.error(`File ${configFilePath} does not exist!`)
-}else{
-log.error('Invalid config file!\n '+e.stack)
-
-constextension=path.extname(configFilePath)
-if(extension==='.coffee'&&!COFFEE_SCRIPT_AVAILABLE){
-log.error('You need to install CoffeeScript.\n npm install coffeescript --save-dev')
-}elseif(extension==='.ls'&&!LIVE_SCRIPT_AVAILABLE){
-log.error('You need to install LiveScript.\n npm install LiveScript --save-dev')
-}elseif(extension==='.ts'&&!TYPE_SCRIPT_AVAILABLE){
-log.error('You need to install TypeScript.\n npm install typescript ts-node --save-dev')
-}
+log.error('Error in config file!\n '+e.stack||e)
+
+constextension=path.extname(configFilePath)
+if(extension==='.coffee'&&!COFFEE_SCRIPT_AVAILABLE){
+log.error('You need to install CoffeeScript.\n npm install coffeescript --save-dev')
+}elseif(extension==='.ls'&&!LIVE_SCRIPT_AVAILABLE){
+log.error('You need to install LiveScript.\n npm install LiveScript --save-dev')
+}elseif(extension==='.ts'&&!TYPE_SCRIPT_AVAILABLE){
+log.error('You need to install TypeScript.\n npm install typescript ts-node --save-dev')
 }
 returnprocess.exit(1)
 }

test/unit/config.spec.js

@@ -118,7 +118,8 @@ describe('config', () => {
 
 expect(logSpy).to.have.been.called
 constevent=logSpy.lastCall.args
-expect(event).to.be.deep.equal(['File /conf/not-exist.js does not exist!'])
+expect(event.toString().split('\n').slice(0,2)).to.be.deep.equal(
+[`Error in config file!`,` Error: Cannot find module '/conf/not-exist.js'`])
 expect(mocks.process.exit).to.have.been.calledWith(1)
 })