@qlever-llc/trellis-result

Class-based Result<T, E> and AsyncResult<T, E> types for TypeScript, inspired by Rust.

Provides explicit error handling with method chaining and the take() pattern for early returns, without relying on exceptions.

import { Result, AsyncResult } from "@qlever-llc/trellis-result";

const user = await fetchUser(id).take();
if (Result.isErr(user)) return user;

Key surface area:

• Result.ok(value) / Result.err(error) — construction
• Result.try(() => ...) / AsyncResult.try(async () => ...) — wrap throwing code
• .map(), .mapErr(), .andThen() — transforms
• .take() — early return pattern (Rust's ? operator equivalent)
• .match({ ok, err }) — pattern matching
• Result.all() / Result.any() — combinators
• MaybeAsync<T, E> — flexible sync/async return type
• BaseError — base class for all Trellis error types

See the source and inline JSDoc for full API details.