@rustresult/result/lib/ResultJson.d.ts

Rust-like Result and ResultAsync for Javascript

/**
 * The type that represents the JSON object structure of `Result`.
 *
 * `value` may not exist if `T` or `E` is `undefined`.
 */
export type ResultJson<T, E> = (undefined extends T ? {
    type: 'ok';
    value?: T;
} : {
    type: 'ok';
    value: T;
}) | (undefined extends E ? {
    type: 'err';
    value?: E;
} : {
    type: 'err';
    value: E;
});