fix: keep output file extensions to always be .js for all all project file type

Output file extensions should be .js for .ts, .js, .jsx and other similar project file extensions

fix #2

Author: Harrison Ifeanyichukwu

src/modules/Bundler.js

@@ -39,7 +39,7 @@ export default class Bundler {
         return {
             input: options.src,
             output: {
-                file: options.dest + (uglify? '.min' : '') + options.ext,
+                file: options.dest + (uglify? '.min.js' : '.js'),
                 format: options.format,
                 name: Util.camelCase(name),
                 interop: options.interop,