option-t
Version:
A toolkit of Nullable/Option/Result type implementation in ECMAScript. Their APIs are inspired by Rust's `Option<T>` and `Result<T, E>`.
15 lines (14 loc) • 592 B
JavaScript
/**
* * Return _input_ directly.
* * This value is passed as the input. But it maybe mutated by calling _effector_.
* * Call _effector_ with the inner value of _input_ if _input_ is `Some(T)`.
* * This main purpose is to inspect an inner value in a chained function calling.
* If you don't have to do it, you should not mutate the inner value.
* if-else statement might be sufficient to mutate the inner value instead of calling this function.
*/
export function inspectOption(input, effector) {
if (input.ok) {
effector(input.val);
}
return input;
}