Function whenFalsy

const isEven = (value: number) => value % 2 === 0;
const whenIsOdd = whenFalsy(isEven);
const double = (value: number) => value * 2;
const doubleWhenOdd = whenIsOdd(double);

doubleWhenOdd(2); // 2
doubleWhenOdd(3); // 6

Returns (<FalseInput, FalseOutput>(falsyHandler: Unary<FalseInput, FalseOutput>) => ((value: Value) => Predicated & Value | FalseOutput))

• • <FalseInput, FalseOutput>(falsyHandler: Unary<FalseInput, FalseOutput>): ((value: Value) => Predicated & Value | FalseOutput)

  • Type Parameters

    • FalseInput = Value extends Predicated ? Value : Predicated

    • FalseOutput = Predicated & Value

    Parameters

    • falsyHandler: Unary<FalseInput, FalseOutput>

    Returns ((value: Value) => Predicated & Value | FalseOutput)

    • • (value: Value): Predicated & Value | FalseOutput

      • Parameters

        • value: Value

        Returns Predicated & Value | FalseOutput