option-t/esm/plain_result/map_or.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 { unsafeUnwrapValueInOkWithoutAnyCheck } from './internal/intrinsics_unsafe.js';
import { isOk } from './result.js';
/**
 *  Return the result of _transformer_ with using _input_ as an argument for it if _input_ is `Ok(T)`.
 *  Otherwise, return _defaultValue_.
 *
 *  Basically, this operation is a combination `map()` and `unwrapOr()`.
 */
export function mapOrForResult(input, defaultValue, transformer) {
    if (isOk(input)) {
        const val = unsafeUnwrapValueInOkWithoutAnyCheck(input);
        const result = transformer(val);
        return result;
    }
    return defaultValue;
}