External module "IsDefined"

isDefined

• isDefined<T>(value: T | null | undefined): value is T

• Type parameters

  • T

  Parameters

  • value: T | null | undefined

    The value being checked.

  Returns value is T

  True if the value is strictly undefined.not null or undefined, false otherwise.

  See https://stackoverflow.com/questions/51003292/exporting-utility-functions-in-typescript/51004236#51004236 for an implementation reference.