@hazae41/option/dist/types/mods/option/option.d.ts

Rust-like Option for TypeScript

import { NoneInit, None } from './none.js';
import { SomeInit, Some } from './some.js';

type Nullable<T> = T | undefined | null;
type Optional<T> = T | undefined;
type NonOptional<T> = Exclude<T, undefined>;
type OptionInit<T> = SomeInit<T> | NoneInit;
type Option<T> = Some<T> | None;
declare namespace Option {
    function from<T>(init: OptionInit<T>): Option<T>;
    /**
     * Create an Option from a nullable value
     * @param inner
     * @returns `Some<T>` if `T`, `None` if `undefined`
     */
    function wrap<T>(inner: Nullable<T>): Option<T>;
}

export { type NonOptional, type Nullable, Option, type OptionInit, type Optional };