option-t/esm/nullable/ok_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 { createErr, createOk } from '../plain_result/result.js';
import { isNotNull } from './nullable.js';
/**
 * Transforms the `Nullable<T>` into a `Result<T, E>` by mapping `T` to `Ok(T)`.
 * If `input` is `null`, then return `Err(E)` with passed `err`.
 *
 * Arguments passed to this are eagerly evaluated;
 * if you are passing the result of a function call, it is recommended to use okOrElse,
 * which is lazily evaluated.
 */
export function okOrForNullable(input, err) {
    if (isNotNull(input)) {
        const okWrapped = createOk(input);
        return okWrapped;
    }
    const errWrapped = createErr(err);
    return errWrapped;
}