option-t/esm/maybe/operators/or_else.js

A toolkit of Nullable/Option/Result type implementation in ECMAScript. Their APIs are inspired by Rust's `Option<T>` and `Result<T, E>`.

/**
 *  Return _input_ as `T` if the passed _input_ is not `null` and `undefined`.
 *  Otherwise, return the result of _recoverer_.
 */
export function orElseForMaybe(input, recoverer) {
    if (input !== undefined && input !== null) {
        return input;
    }
    const fallback = recoverer();
    return fallback;
}