upgrade core-js

[afc163]

warning antd > rc-tree-select > rc-trigger > rc-animate > fbjs > core-js@1.2.7: core-js@<2.6.6 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.

[mylylyl]

好奇怪 我看fbjs明明用的^2.4.1

[YUD1112]

please update the version of core-js which rc-animate referenced.

[yinanwang1]

也碰到一样的问题： npm WARN deprecated core-js@1.2.7: core-js@<2.6.8 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.
看到依赖关系是antd使用了1.2.7版本的core-js：
├─┬ antd@3.23.2
│ └─┬ rc-editor-mention@1.1.13
│ └─┬ draft-js@0.10.5
│ └─┬ fbjs@0.8.17
│ └── core-js@1.2.7
├─┬ babel-core@6.26.3
│ └─┬ babel-register@6.26.0
│ └── core-js@2.6.9 deduped
└─┬ babel-runtime@6.26.0
└── core-js@2.6.9