我尝试在本地服务器上编辑Gulp应用。 我认为这可能与ES6或版本有关，但我努力并没有尝试。
我总是有这个错误：
/var/www/html/carros/gulpfile.js:11
let dev = true;
^^^
SyntaxError: Unexpected identifier
at Module._compile (module.js:439:25)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Liftoff.handleArguments (/usr/local/lib/node_modules/gulp/bin/gulp.js:116:3)
at Liftoff.<anonymous> (/usr/local/lib/node_modules/gulp/node_modules/liftoff/index.js:198:16)
at module.exports (/usr/local/lib/node_modules/gulp/node_modules/liftoff/node_modules/flagged-respawn/index.js:17:3)
at Liftoff.<anonymous> (/usr/local/lib/node_modules/gulp/node_modules/liftoff/index.js:190:9)