NPM: v6.4.1
Ionic: v4.5.0
Node: v10.13.0

I have a few warnings that pop up when I use npm install. I'm not sure if the warnings can be ignored, but I realized that @ionic relies on rxjs@5.5.11 vs @angular relying on rxjs@6.0.0, and as far as I understand, you can't have both dependencies installed at the same time.

npm WARN @angular/common@7.1.2 requires a peer of rxjs@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN @angular/compiler-cli@7.1.2 requires a peer of typescript@>=3.1.1 <3.2 but none is installed. You must install peer dependencies yourself.
npm WARN @angular/core@7.1.2 requires a peer of rxjs@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN @angular/forms@7.1.2 requires a peer of rxjs@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN @angular/http@7.1.2 requires a peer of rxjs@^6.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

I have a few typescript errors when i use ionic serve. They can be seen in the photo below.

My Fedora-Apps is structured out here in my github repo