message: fixed ShadowOpts type
diff: @@ -54,7 +54,7 @@ export interface BorderOptions {
  type?: string // TODO: specify values, eg: 'none'
  }
  export interface ShadowOpts {
  - type: string
  + type: 'outer' | 'inner' | 'none'
  angle: number
  opacity: number
  blur?: number
  