Ionic CLI templates: Why is ionic-bower a 'devDependency' in bower.json?

Why does ionic-bower appear as a devDependency in bower.json? That doesn’t make sense to me because ionic is needed at runtime.

  "name": "myapp",
  "private": "true",
  "devDependencies": {
    "ionic": "driftyco/ionic-bower#1.0.0-rc.1"

I am also confused. Did you find any answer?
The only way it makes sense is if we check in all the packages which has been installed by bower. Maybe that’s why bower itself is a devDependency in npm package.json.

I have the same question. I thought it would be a normal dependency.