From 7c65eb86c2ae520c3cb35e5417460d34d05deec3 Mon Sep 17 00:00:00 2001
From: johnjbarton <johnjbarton@johnjbarton.com>
Date: Wed, 1 May 2019 07:42:50 -0700
Subject: [PATCH] feat(config): Provide a default empty object for
 preprocessor_priority

---
 lib/config.js                  |  1 +
 lib/preprocessor.js            |  1 -
 test/unit/preprocessor.spec.js | 30 +++++++++++++++---------------
 3 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/lib/config.js b/lib/config.js
index 67f05d1b8..cad4d7d9b 100644
--- a/lib/config.js
+++ b/lib/config.js
@@ -302,6 +302,7 @@ class Config {
     this.proxies = {}
     this.proxyValidateSSL = true
     this.preprocessors = {}
+    this.preprocessor_priority = {}
     this.urlRoot = '/'
     this.upstreamProxy = undefined
     this.reportSlowerThan = 0
diff --git a/lib/preprocessor.js b/lib/preprocessor.js
index a7dcbabb6..ff4379c26 100644
--- a/lib/preprocessor.js
+++ b/lib/preprocessor.js
@@ -38,7 +38,6 @@ function createPreprocessor (config, preprocessorPriority, basePath, injector) {
   const alreadyDisplayedErrors = {}
   const instances = {}
   let patterns = Object.keys(config)
-  preprocessorPriority = preprocessorPriority || {}
 
   function instantiatePreprocessor (name) {
     if (alreadyDisplayedErrors[name]) {
diff --git a/test/unit/preprocessor.spec.js b/test/unit/preprocessor.spec.js
index 6caf71194..13c3644ee 100644
--- a/test/unit/preprocessor.spec.js
+++ b/test/unit/preprocessor.spec.js
@@ -47,7 +47,7 @@ describe('preprocessor', () => {
         'factory', function () { return fakePreprocessor }
       ]
     }, emitterSetting])
-    pp = m.createPreprocessor({'**/*.js': ['fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*.js': ['fake']}, {}, null, injector)
 
     const file = {originalPath: '/some/a.js', path: 'path'}
 
@@ -68,7 +68,7 @@ describe('preprocessor', () => {
     const injector = new di.Injector([{
       'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
     }, emitterSetting])
-    pp = m.createPreprocessor({'**/*.js': ['fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*.js': ['fake']}, {}, null, injector)
 
     const file = {originalPath: '/some/.dir/a.js', path: 'path'}
 
@@ -90,7 +90,7 @@ describe('preprocessor', () => {
       'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
     }, emitterSetting])
     const config = {'**/*.txt': ['fake']}
-    pp = m.createPreprocessor(config, undefined, null, injector)
+    pp = m.createPreprocessor(config, {}, null, injector)
 
     const file = {originalPath: '/some/a.js', path: 'path'}
 
@@ -112,7 +112,7 @@ describe('preprocessor', () => {
     const injector = new di.Injector([{
       'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
     }, emitterSetting])
-    pp = m.createPreprocessor({'**/*.js': ['fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*.js': ['fake']}, {}, null, injector)
 
     const file = {originalPath: '/some/a.txt', path: 'path'}
 
@@ -138,7 +138,7 @@ describe('preprocessor', () => {
       'preprocessor:fake2': ['factory', function () { return fakePreprocessor2 }]
     }, emitterSetting])
 
-    pp = m.createPreprocessor({'**/*.js': ['fake1', 'fake2']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*.js': ['fake1', 'fake2']}, {}, null, injector)
 
     const file = {originalPath: '/some/a.js', path: 'path'}
 
@@ -152,7 +152,7 @@ describe('preprocessor', () => {
   })
 
   it('should compute SHA', (done) => {
-    pp = m.createPreprocessor({}, undefined, null, new di.Injector([emitterSetting]))
+    pp = m.createPreprocessor({}, {}, null, new di.Injector([emitterSetting]))
     const file = {originalPath: '/some/a.js', path: 'path'}
 
     pp(file, () => {
@@ -182,7 +182,7 @@ describe('preprocessor', () => {
       'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
     }, emitterSetting])
 
-    pp = m.createPreprocessor({'**/a.js': ['fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/a.js': ['fake']}, {}, null, injector)
 
     const fileProcess = {originalPath: '/some/a.js', path: 'path'}
     const fileSkip = {originalPath: '/some/b.js', path: 'path'}
@@ -208,7 +208,7 @@ describe('preprocessor', () => {
       'preprocessor:failing': ['factory', function () { return failingPreprocessor }]
     }, emitterSetting])
 
-    pp = m.createPreprocessor({'**/*.js': ['failing']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*.js': ['failing']}, {}, null, injector)
 
     const file = {originalPath: '/some/a.js', path: 'path'}
 
@@ -232,7 +232,7 @@ describe('preprocessor', () => {
       'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
     }, emitterSetting])
 
-    pp = m.createPreprocessor({'**/*.js': ['failing', 'fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*.js': ['failing', 'fake']}, {}, null, injector)
 
     const file = {originalPath: '/some/a.js', path: 'path'}
 
@@ -261,7 +261,7 @@ describe('preprocessor', () => {
         'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
       }, emitterSetting])
 
-      const pp = m.createPreprocessor({'**/*.js': ['fake']}, undefined, null, injector)
+      const pp = m.createPreprocessor({'**/*.js': ['fake']}, {}, null, injector)
 
       pp(file, () => {
         expect(fakePreprocessor).to.have.been.called
@@ -277,7 +277,7 @@ describe('preprocessor', () => {
     it('should throw after 3 retries', (done) => {
       const injector = new di.Injector([{}, emitterSetting])
 
-      const pp = m.createPreprocessor({'**/*.js': []}, undefined, null, injector)
+      const pp = m.createPreprocessor({'**/*.js': []}, {}, null, injector)
 
       pp(file, () => { })
 
@@ -299,7 +299,7 @@ describe('preprocessor', () => {
       'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
     }, emitterSetting])
 
-    pp = m.createPreprocessor({'**/*': ['fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*': ['fake']}, {}, null, injector)
 
     const file = {originalPath: '/some/photo.png', path: 'path'}
 
@@ -322,7 +322,7 @@ describe('preprocessor', () => {
       'preprocessor:fake': ['factory', function () { return fakePreprocessor }]
     }, emitterSetting])
 
-    pp = m.createPreprocessor({'**/*': ['fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*': ['fake']}, {}, null, injector)
 
     const file = {originalPath: '/some/photo.png', path: 'path'}
 
@@ -344,7 +344,7 @@ describe('preprocessor', () => {
       'preprocessor:fake': ['factory', function () { fakePreprocessor }]
     }, emitterSetting])
 
-    pp = m.createPreprocessor({'**/*': ['fake']}, undefined, null, injector)
+    pp = m.createPreprocessor({'**/*': ['fake']}, {}, null, injector)
 
     const file = {originalPath: '/some/CAM_PHOTO.JPG', path: 'path'}
 
@@ -387,7 +387,7 @@ describe('preprocessor', () => {
       '/*/a.js': ['fakeA', 'fakeB'],
       '/some/*': ['fakeB', 'fakeC'],
       '/some/a.js': ['fakeD']
-    }, undefined, null, injector)
+    }, {}, null, injector)
 
     const file = {originalPath: '/some/a.js', path: 'path'}