报错信息

--- PLACEHOLDER PACKAGE ---

This @babel/plugin-proposal-private-property-in-object version is not meant to

be imported. Something is importing

@babel/plugin-proposal-private-property-in-object without declaring it in its

dependencies (or devDependencies) in the package.json file.

Add "@babel/plugin-proposal-private-property-in-object" to your devDependencies

to work around this error. This will make this message go away.