Function isNone

  • isNone<A>(option: Option<A>): option is Readonly<{ isSome: false }>

  • Type guard that checks if an Option is None.

    Type Parameters

    • A

    Parameters

    • option: Option<A>

      The Option to check

    Returns option is Readonly<{ isSome: false }>

    true if the Option is None, false if it is Some<A>

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