babel plugin system import transformer:将import()和System.import()转换为Babel的UMD模式转换

babel插件系统导入变压器 插件,用等效的UMD模式替换import()和System.import() 变身 import ( './utils/serializer' ) . then ( function ( module ) { console . log ( module ) ; } ) ; // AND System . import ( './utils/serializer' ) . then ( function ( module ) { console . log ( module ) ; } ) ; 到 new Promise ( function ( resolve , reject ) { var global = window ; if ( typeof global . define === 'function' && g