Function warn

Parameters

• name: string

  The name of the function or property.

• deprecationDate: string

  The date of deprecation. Prefer 'month yyyy' or 'quarter yyyy' format.

• deletionDate: string

  The date of deletion, in the same format as the deprecation date.

• Optionalopt_use: string

  The name of a function or property to use instead, if any.