Function whenTruthy

const isEven = (value: number) => value % 2 === 0;
const whenIsEven = whenTruthy(isEven);
const double = (value: number) => value * 2;
const doubleWhenEven = whenIsEven(double);

doubleWhenEven(2); // 4
doubleWhenEven(3); // 3

Returns ((...firstArgument: [truthyHandler: Unary<Predicated & Value, unknown>]) => ((value: Value) => unknown))

• • (...firstArgument: [truthyHandler: Unary<Predicated & Value, unknown>]): ((value: Value) => unknown)

  • Parameters

    • Rest ...firstArgument: [truthyHandler: Unary<Predicated & Value, unknown>]

    Returns ((value: Value) => unknown)

    • • (value: Value): unknown

      • Parameters

        • value: Value

        Returns unknown