问题
手动创建组件，报错： Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.ts(1219)
解决
VSCode 左下角的“设置”，Settings，搜索“experimentalDecorators”，勾选。