Function reduceTwo

reduceTwo<T>(
    a: undefined | T,
    b: undefined | T,
    f: (aa: T, bb: T) => T,
): undefined | T
If both a and b are undefined, return undefined. If exactly one of the two is undefined, return the other. If both are not undefined, return f(a, b).
Type Parameters
- T
Parameters
- a: undefined | T
- b: undefined | T
- f: (aa: T, bb: T) => T
Returns undefined | T
- Defined in src/index.ts:82