iif
Signature - source.ts#L1107
function iif<T>(
condition: () => unknown,
createSourceIfTrue: () => Source<T>,
createSourceIfFalse: () => Source<T>,
): Source<T>
function iif<T>(
condition: () => unknown,
createSourceIfTrue: () => Source<T>,
createSourceIfFalse: () => Source<T>,
): Source<T>