option-t/esm/maybe/zip.js

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

import { isNotNullOrUndefined } from './maybe.js';
/**
 *  Zips _self_ with another `Maybe<T>`.
 *  If _self_ is `T` and _other_ is `U`, this method returns `[NotNullOrUndefined<T>, NotNullOrUndefined<U>]`.
 *  Otherwise, `undefined` is returned.
 */
export function zipForMaybe(self, other) {
    if (isNotNullOrUndefined(self) && isNotNullOrUndefined(other)) {
        return [self, other];
    }
    return undefined;
}