写GULP遇到的ES6问题详解

events.js:182
 throw er; // Unhandled \'error\' event
 ^
GulpUglifyError: unable to minify  

gulp.task(\'miniJS\', function(){
         gulp.src([\'demo.js\', \'demo2.js\'])
            .pipe(concat(\'demoFile.js\'))
            .pipe(babel())
            .pipe(gulp.dest(\'./finalFile/\'))
})//欢迎加入前端全栈开发交流圈一起吹水聊天学习交流：864305860

# Babel 7
$ npm install --save-dev gulp-babel @babel/core @babel/preset-env
//欢迎加入前端全栈开发交流圈一起吹水聊天学习交流：864305860 
# Babel 6
$ npm install --save-dev gulp-babel@7 babel-core babel-preset-env

\"@babel/core\": \"^7.1.6\",
 \"gulp-babel\": \"^8.0.0\",
\"@babel/preset-env\": \"^7.1.6\",

.pipe(babel({ 
   presets: [\'@babel/env\']  
  }))

function demoFunc(){
 //something
}//欢迎加入前端全栈开发交流圈一起吹水聊天学习交流：864305860
export demoFunc;

export function demo(){
    console.log(\'this is the first gulp demo\');
}
 export var num = {};

.pipe(babel({
    presets: [\'@babel/env\']
}))//欢迎加入前端全栈开发交流圈一起吹水聊天学习交流：864305860
.pipe(uglify())
.pipe(gulp.dest(\'file\'))