Angular 6.X peer dependencies

[thaodc]

Standard NG CLI 6.x project,

Npm install gives me:

npm WARN md2@0.0.33 requires a peer of @angular/core@^4.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN md2@0.0.33 requires a peer of @angular/common@^4.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN md2@0.0.33 requires a peer of @angular/http@^4.0.0 but none is installed. You must install peer dependencies yourself.

Currently on "md2": "0.0.33",

Can anyone please advise?