🚀 Feature request

Command (mark with an x)

- [ ] new
- [ ] build
- [ ] serve
- [ ] test
- [ ] e2e
- [X] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc

Description

Using dots in component name when using component schematic (might also happen with other schematics) should fail. I.e. ng generate component a.b.x should fail.

I noticed that people who are new to Angular tend to use the schematic like this for the first time:

ng generate component hello-world.component

which produces something funky like this:

export class HelloWorld.ComponentComponent

Describe the solution you'd like

Use some whitelist regex to check the component's name before.

By the way, why does the component's selector allow dots in the regular expression below?

Describe alternatives you've considered

ng generate component hello-world.component
echo D'OH!
git reset --hard
git clean -d -f
ng generate component hello-world

Anyway, I am in for a pull request.