Installation

Package managers

pnpm

pnpm add @nlozgachev/pipelined

npm

npm install @nlozgachev/pipelined

yarn

yarn add @nlozgachev/pipelined

bun

bun add @nlozgachev/pipelined

Imports

The library is split into four entry points. Import only what you need:

import { Maybe, Result, Task } from "@nlozgachev/pipelined/core";
import { Arr, Str } from "@nlozgachev/pipelined/data";
import { pipe, flow } from "@nlozgachev/pipelined/composition";
import { Brand } from "@nlozgachev/pipelined/types";

Entry point	Contains
@nlozgachev/pipelined/core	Maybe, Result, Validation, Task, TaskResult, TaskMaybe, TaskValidation, These, Tuple, RemoteData, Deferred, Lens, Optional, Reader, State, Logged, Predicate, Refinement, Resource, Equality, Ordering, Lazy, Combinable, Op
@nlozgachev/pipelined/data	Arr, Rec, Num, Str, Dict, Uniq
@nlozgachev/pipelined/composition	pipe, flow, compose, curry, uncurry, flip, tap, memoize, fn, not, on, converge, juxt
@nlozgachev/pipelined/types	Brand, Duration, NonEmptyList

Requirements

• Node.js 22 or later (for npm/pnpm/yarn/bun installs)
• TypeScript 5.5 or later with strict mode enabled

TypeScript 5.5 or later is required because the library leverages standard ECMAScript Set composition methods (such as .union(), .intersection(), and .isSubsetOf()) which were introduced into TypeScript’s standard library in version 5.5.

Strict mode is required for the type-level guarantees — particularly exhaustiveness checking in match branches and narrowing in type guards — to work correctly.