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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 Result } from '../core/result.js'; /** * Return _b_ if _a_ is `Ok(T)`. * Otherwise, return _a_. */ export declare function andForResult<T, U, E>(a: Result<T, E>, b: Result<U, E>): Result<U, E>;