[BUG] - 启动项目提示DeprecationWarning

[jhoneybee]

i ｢wds｣: Project is running at http://localhost:3000/
i ｢wds｣: webpack output is served from undefined
i ｢wds｣: Content not from webpack is served from D:\Code\doc\examples\normal
(node:8664) [DEP0148] DeprecationWarning: Use of deprecated folder mapping "./" in the "exports" field module resolution of the package at D:\Code\doc\node_modules\postcss\package.json.
Update this package.json to use a subpath pattern like "./*".
(Use `node --trace-deprecation ...` to show where the warning was created)
i ｢wdm｣: Compiled successfully.
i ｢wdm｣: Compiling...
i ｢wdm｣: Compiled successfully.

[jhoneybee]

see postcss/postcss#1456
see postcss/postcss#1455

测试发现 postcss 8.1.5 不会出现此问题， 8.2.1 存在此问题。

[jhoneybee]

node 更新到 15.6.0 即解决问题