Fix

Tools/Gulp/tasks/gulpTasks-libraries.js

@@ -50,8 +50,8 @@ var buildExternalLibrariesMultiEntry = function(libraries, settings, isMin) {
 
     // Webpack Config.
     var configFolder = path.dirname(path.resolve(__dirname, configPath));
-    var configPath = path.join(settings.build.mainFolder, "webpack.config.js");
-    var wpConfig = require(path.resolve(configFolder, configPath));
+    var wpConfigPath = path.join(settings.build.mainFolder, "webpack.config.js");
+    var wpConfig = require(path.resolve(configFolder, wpConfigPath));
 
     // Create multi entry list.
     wpConfig.entry = { };

Tools/Gulp/tasks/gulpTasks-viewerLibraries.js

@@ -22,8 +22,8 @@ var buildViewerLibrary = function(library, settings) {
     var outputDirectory = config.build.outputDirectory + settings.build.distOutputDirectory;
 
     settings.build.outputs.forEach(out => {
-        var configPath = path.join(settings.build.mainFolder, "webpack.config.js");
-        let wpConfig = require(configPath);
+        var wpConfigPath = path.join(settings.build.mainFolder, "webpack.config.js");
+        let wpConfig = require(wpConfigPath);
         if (!out.minified) {
             wpConfig.mode = "development";
         }

Tools/Gulp/tasks/gulpTasks-watchLibraries.js

@@ -26,8 +26,8 @@ gulp.task("watchLibraries", function startWatch() {
                 }
 
                 var configFolder = path.dirname(path.resolve(__dirname, configPath));
-                var configPath = path.join(settings.build.mainFolder, "webpack.config.js");
-                var wpConfig = require(path.resolve(configFolder, configPath));
+                var wpConfigPath = path.join(settings.build.mainFolder, "webpack.config.js");
+                var wpConfig = require(path.resolve(configFolder, wpConfigPath));
 
                 // watch on.
                 wpConfig.watch = true;

Tools/WebpackPlugins/babylonWebpackConfig.js

@@ -16,8 +16,8 @@ module.exports = function defaultConfig(options) {
     const settings = config[module];
 
     const src = path.resolve(__dirname, settings.build.srcDirectory);
-    const configPath = path.join(settings.build.mainFolder, "webpack.config.js");
-    const webpackFolder = path.dirname(path.resolve(configFolder, configPath));
+    const wpConfigPath = path.join(settings.build.mainFolder, "webpack.config.js");
+    const webpackFolder = path.dirname(path.resolve(configFolder, wpConfigPath));
 
     options.resolveExtensions = options.resolveExtensions || [];
     options.moduleRules = options.moduleRules || [];