软件包“ firebaseui-angular”与“ @ angular / common”具有不兼容的对等依赖关系（需要“ ^ 6.1.2”（扩展），将安装“ 8.1.2”）

Question

尝试更新为ng update @ angular / cli @ angular / core

失败

 packageGroup metadata of package @angular/cli is malformed. Ignoring.
    packageGroup metadata of package @angular/cli is malformed.
    packageGroup metadata of package @angular/cli is malformed. Ignoring.
    packageGroup metadata of package @angular/cli is malformed. Ignoring.
    packageGroup metadata of package @angular/cli is malformed.
    packageGroup metadata of package @angular/cli is malformed. Ignoring.
    packageGroup metadata of package @angular/cli is malformed. Ignoring.
    packageGroup metadata of package @angular/cli is malformed.
    packageGroup metadata of package @angular/cli is malformed. Ignoring.
    packageGroup metadata of package @angular/cli is malformed. Ignoring.
                  Package "firebaseui-angular" has an incompatible peer dependency to "@angular/common" (requires "^6.1.2" (extended), would install "8.1.2").

zone.js也有类似的问题，但似乎angularfirebase2库已经解决了这些问题。