npm WARN angular-contents@7.0.0 requires a peer of @angular/common@^7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN angular-contents@7.0.0 requires a peer of @angular/core@^7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN angular-contents@7.0.0 requires a peer of @angular/common@^7.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN angular-contents@7.0.0 requires a peer of @angular/core@^7.0.0 but none is installed. You must install peer dependencies yourself.