Validation schema for angular schematics

schema.json

{
  "$schema": "http://json-schema.org/schema",
  "id": "SchematicsGenerateFilesApp",
  "title": "Application Options Schema for Angular projects feat Aliased SASS",
  // the type of the schema object (obviously object!)
  "type": "object",
  // the properties of that object
  "properties": {
    // name, maps to an option you expect from the command line, flagged --name
    "name": {
      "description": "The name of the application.",
      // you expect for it to be a string
      "type": "string",
      "$default": {
        "$source": "argv",
        "index": 0
      }
    }
  },
  // it is requiered! (so your schematic will fail if you don't pass this option)
  "required": [
    "name"
  ]
}