gulpfile.js 設定檔

var gulp = require('gulp');
var webpack = require('webpack-stream');
var named = require('vinyl-named');

gulp.task('default', function () {
    return gulp.src('./resource/js/app.js')
        .pipe(webpack( require('./webpack.config.js') ))
        .pipe(gulp.dest('./public/js/'));
});

webpack.config.js 設定檔

module.exports = {
    entry : './resource/js/app.js',
    output : {
        filename : 'bundle.js'
    },
    module : {
        rules : [
            {
                test : /\.js$/, use : {
                loader : 'babel-loader',
                options : {
                    presets : ['es2015']
                }
            }}
        ]
    }
};

app.js 檔案

import './a.js';

function helloworld()
{
    console.log(1);
}

只有webpack時, js檔案是可以產生且能被babel-loader執行, 但執行gulp時, babel-loader便沒執行了.
初學webpack與gulp ~ 感謝各位指教~~