option-t/esm/plain_result/map_or_else_async.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 { unsafeUnwrapValueInErrWithoutAnyCheck, unsafeUnwrapValueInOkWithoutAnyCheck, } from './internal/intrinsics_unsafe.js';
import { isOk } from './result.js';
/**
 *  Maps a `Result<T, E>` to `U` by applying _transformer_ to a contained `Ok(T)` value in _input_,
 *  or a _recoverer_ function to a contained `Err(E)` value in _input_.
 *  This function can be used to unpack a successful result while handling an error.
 */
export async function mapOrElseAsyncForResult(input, recoverer, transformer) {
    if (isOk(input)) {
        const inner = unsafeUnwrapValueInOkWithoutAnyCheck(input);
        const result = await transformer(inner);
        return result;
    }
    const err = unsafeUnwrapValueInErrWithoutAnyCheck(input);
    const fallback = await recoverer(err);
    return fallback;
}