fix "configConst" and mutating imported config

Author: mvorisek

tasks/config/project/config.js

@@ -3,7 +3,6 @@
 *******************************/
 
 let
-    extend   = require('extend'),
     fs       = require('fs'),
     path     = require('path'),
 
@@ -50,8 +49,6 @@ module.exports = {
 
     // adds additional derived values to a config object
     addDerivedValues: function (config) {
-        config = config || extend(false, {}, defaults);
-
         /* --------------
             File Paths
         --------------- */
@@ -140,8 +137,6 @@ module.exports = {
         config.globs.individuals = individuals.length === 1 ? individuals[0] : (individuals.length > 1)
             ? '{' + individuals.join(',') + '}'
             : undefined;
-
-        return config;
     },
 
 };

tasks/docs/build.js

@@ -3,6 +3,7 @@
  *******************************/
 
 let
+    extend      = require('extend'),
     gulp        = require('gulp'),
 
     // node dependencies
@@ -14,7 +15,7 @@ let
     print       = require('gulp-print').default,
 
     // user config
-    config      = require('../config/docs'),
+    configDocs      = require('../config/docs'),
 
     // install config
     tasks       = require('../config/tasks'),
@@ -35,7 +36,8 @@ let
 
 module.exports = function (callback) {
     // use a different config
-    config = configSetup.addDerivedValues(config);
+    const config = extend(true, {}, configDocs);
+    configSetup.addDerivedValues(config);
 
     // shorthand
     const globs  = config.globs;

tasks/docs/serve.js

@@ -2,6 +2,7 @@
  Serve Docs
  *******************************/
 let
+    extend      = require('extend'),
     gulp        = require('gulp'),
 
     // node dependencies
@@ -11,7 +12,7 @@ let
     print       = require('gulp-print').default,
 
     // user config
-    config      = require('../config/docs'),
+    configDocs      = require('../config/docs'),
 
     // task config
     tasks       = require('../config/tasks'),
@@ -27,7 +28,8 @@ let
 
 module.exports = function () {
     // use a different config
-    config = configSetup.addDerivedValues(config);
+    const config = extend(true, {}, configDocs);
+    configSetup.addDerivedValues(config);
 
     console.clear();
     console.log('Watching source files for changes');