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option-t

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

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import type { Undefinable } from '../undefinable/undefinable.js'; import { type Nullable } from './nullable.js'; /** * Return `undefined` if _input_ is `null`. * Otherwise, return `T` directly. */ export declare function toUndefinableFromNullable<T>(input: Nullable<T>): Undefinable<T>;