option-t/esm/plain_result/to_nullable.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 { unwrapErrOrForResult } from './internal/unwrap_err_or.js';
import { unwrapOrForResult } from './unwrap_or.js';
/**
 *  Unwrap `T` if _input_ is `Ok(T)`.
 *  Otherwise, return `null`.
 */
export function toNullableFromOk(input) {
    const val = unwrapOrForResult(input, null);
    return val;
}
/**
 *  Unwrap `E` if _input_ is `Err(E)`.
 *  Otherwise, return `null`.
 */
export function toNullableFromErr(input) {
    const err = unwrapErrOrForResult(input, null);
    return err;
}