option-t/esm/undefinable/or.d.ts

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

import type { Undefinable } from './undefinable.js';
/**
 *  Return _a_ if _a_ is not `undefined`.
 *  Otherwise, return _b_.
 */
export declare function orForUndefinable<T>(a: Undefinable<T>, b: Undefinable<T>): Undefinable<T>;