Unable to create new project with a number in its name

Versions

Angular CLI: 6.0.0
Node: 9.9.0
OS: darwin x64
Angular:
...

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.6.0
@angular-devkit/core         0.6.0
@angular-devkit/schematics   0.6.0
@schematics/angular          0.6.0
@schematics/update           0.6.0
rxjs                         6.1.0
typescript                   2.7.2

Repro steps

• npm i -g @angular/cli
• ng new ng-6-playground

Observed behavior

Schematic input does not validate against the Schema: {"name":"ng-6-playground","version":"6.0.0","newProjectRoot":"projects","skipInstall":false,"linkCli":false,"skipGit":false,"commit":null}
Errors:

  Data path ".name" should match format "html-selector".

Desired behavior

Should be able to create a new project using the CLI.

[UniQP]

Just got the same error with an underscore in the project name.

[Cammisuli]

Actually looking into this more, it appears that there’s an issue with creating a project with a number in it’s name.

If I create a project with ng new ng-playground it works. But as soon as I add a number like ng new ng-6-playground the error in the original post appears.