laravel5.2+vue1.0，使用vue组件，gulp的时候报错

[07:11:05] gulp-notify: [Laravel Elixir] Browserify Failed!: Parsing file /home/vagrant/Code/TaskManager/resources/assets/js/vue/components/stepList.vue: 'import' and 'export' may appear only with 'sourceType: module' (22:0)

{ Error: Parsing file /home/vagrant/Code/TaskManager/resources/assets/js/vue/components/stepList.vue: 'import' and 'export' may appear only with 'sourceType: module' (22:0)

    at Deps.parseDeps (/home/vagrant/Code/TaskManager/node_modules/module-deps/index.js:437:28)

    at fromSource (/home/vagrant/Code/TaskManager/node_modules/module-deps/index.js:376:44)

    at /home/vagrant/Code/TaskManager/node_modules/module-deps/index.js:370:17

    at ConcatStream. (/home/vagrant/Code/TaskManager/node_modules/concat-stream/index.js:36:43)

    at emitNone (events.js:91:20)

    at ConcatStream.emit (events.js:185:7)

    at finishMaybe (/home/vagrant/Code/TaskManager/node_modules/readable-stream/lib/_stream_writable.js:460:14)

    at endWritable (/home/vagrant/Code/TaskManager/node_modules/readable-stream/lib/_stream_writable.js:469:3)

    at ConcatStream.Writable.end (/home/vagrant/Code/TaskManager/node_modules/readable-stream/lib/_stream_writable.js:436:5)

    at DuplexWrapper.onend (/home/vagrant/Code/TaskManager/node_modules/readable-stream/lib/_stream_readable.js:537:10)