# Type.Union

Creates a Union type.

## Example

Example usage is shown below.

    const T = Type.Union([                              // const T = {
      Type.String(),                                    //   anyOf: [
      Type.Number()                                     //     { type: 'string' },
    ])                                                  //     { type: 'number' }
                                                        //   ]
                                                        // }

    type T = Static<typeof T>                           // type T = string | number

## Guard

Use the IsUnion function to guard values of this type.

    Type.IsUnion(value)                                 // value is TUnion