option-t/esm/deprecated/plain_option/flatten.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 { Option } from './option.js';
/**
 *  Flatten the inner value of _input_.
 */
export declare function flattenForOption<T>(input: Option<Option<T>>): Option<T>;