Request a feature or report a bug? [这是一个需求还是一个缺陷]

缺陷

One-line summary [问题简述]

包引用错误

Version [产品及版本]

• iClient product (for leaflet,for openlayers,for mapboxgl,classic)[iClient 产品]: for leaflet
• iClient version [iClient 版本]: 当前master
• Browser version [浏览器类型和版本]: node 8.9.4
• OS Version [操作系统类型和版本]: nuxt.js

Actual Behavior [当前现象]

warning in ./node_modules/@supermap/iclient-leaflet/overlay/TurfLayer.js
"export 'default' (imported as 'turf') was not found in '@turf/turf'

Expected Behavior [期望现象]

Example of reproducing the issue [重现现象的例子]

What is motivation or use case for changing the behavior? [需求的场景和目的是什么？]