helpers4 vs Alternative Libraries

A comparison of helpers4 with popular TypeScript/JavaScript utility libraries.

Overview

Library	Functions	API Style	Architecture	Tree-shakable	TypeScript	License	Maintained
helpers4	316	Direct	Modular	ESM	native	LGPL	Yes
radashi	~130	Direct	Monolith	ESM	native	MIT	Yes
radash	~90	Direct	Monolith	ESM	native	MIT	No
lodash	~300	Chainable	Monolith	opt-in	unofficial	MIT	Low
es-toolkit	~300	Direct	Monolith	ESM	native	MIT	Highly
remeda	~100	Pipe	Monolith	ESM	native	MIT	Yes
ramda	~200	Curried	Monolith	limited	unofficial	MIT	Low
rambda	~190	Curried	Monolith	ESM	native	MIT	Yes
moderndash	~50	Direct	Monolith	ESM	native	MIT	Yes

Glossary — highlighted cells in the table above call out helpers4’s values for each column.

Term	Meaning
Direct	call the function directly, fn(x)
Chainable	wrap the value in a chain object, _(x).map(f).value()
Pipe	compose functions left-to-right, pipe(x, fn1, fn2)
Curried	functions take one argument at a time, fn(a)(b), point-free style
Modular	split into independent packages, install only what you use
Monolith	one package containing everything

helpers4 vs Radashi

Radashi (~130 functions, the maintained fork of Radash) is a lean, single-package set of general-purpose data primitives (sort, group, clone, pick, map). helpers4 covers that same general-purpose ground — its array/object/string/number/function/type/guard categories alone already outnumber radashi’s entire function count — and adds what radashi deliberately excludes (dates, URLs, semver, observables). Pick radashi for the smallest possible single-package toolkit with no domain extras; pick helpers4 for that same ground plus the gaps covered too — see the detailed comparison.

helpers4 vs Radash

Radash is the predecessor of radashi and is archived, no longer maintained. If you’re on radash, migrate to radashi (its maintained fork) — or straight to helpers4, which covers the same general-purpose ground plus date/URL/version/ observable helpers neither radash nor radashi has.

helpers4 vs Lodash

Lodash is the most popular JS utility library (~300 functions), built for a pre-ES2015 world and still ES5-compatible. helpers4 is a modern (ES2024+), fully tree-shakable alternative with comparable raw coverage (312 functions) plus what lodash never had — dates, URLs, semver, observables, typed promise guards — see the detailed comparison.

helpers4 vs es-toolkit

es-toolkit (~300 functions, maintained by Toss/Viva Republica) is a fast, modern, fully tree-shakable lodash replacement — the most actively developed library in this comparison. It used to be the only one here with Map/Set utilities and concurrency primitives (Mutex, Semaphore); as of helpers4 v3.0.5 both now cover that ground, so the real remaining gap is narrower — es-toolkit’s async-aware array iteration (flatMapAsync, reduceAsync, limitAsync) is still more complete. helpers4 still covers its own domain-specific ground (dates, URLs, semver, observables, Temporal guards) that es-toolkit’s scope never aimed for. See the detailed comparison.

helpers4 vs Remeda

Remeda is a TypeScript-first library built around a dual data-first/data-last pipe() with lazy evaluation and strong type inference. helpers4 ships its own pipe (pipe()/compose()/curry(), eager) plus general-purpose and domain-specific utilities across 20 categories. They optimize for different things and can be combined — see the detailed comparison.

helpers4 vs Ramda

Ramda is a purely functional, auto-curried library (lenses, transducers, point-free style) for FP purists — low maintenance activity these days. helpers4 is pragmatic utility-first, not point-free. If you want the same FP style actively maintained and TypeScript-native, see Rambda below instead.

helpers4 vs Rambda

Rambda is the actively-maintained, TypeScript-native alternative in Ramda’s curried/point-free space (last published 2026-05-15). It doesn’t reach into any of helpers4’s domain-specific categories — synchronous data transforms only, no date/URL/semver/observable/promise coverage. See the detailed comparison.

helpers4 vs Moderndash

Moderndash is a smaller (~50 functions), newer TypeScript-first lodash-inspired library covering array/object/string/number basics, plus a small Promise category (sleep, timeout, retry, Queue) — conceptually similar to the concurrency gaps also found in es-toolkit. Roughly a sixth of helpers4’s function count, no domain-specific coverage (dates, URLs, semver, observables).

Feature matrix

What each library covers — and what helpers4 uniquely provides (✅ full · 🟡 partial · — none):

Category	helpers4	radashi	lodash	es-toolkit	remeda	ramda	rambda
Array manipulation	✅	✅	✅	✅	✅	✅	✅
Object manipulation	✅	✅	✅	✅	✅	✅	✅
String manipulation	✅	✅	✅	✅	✅	✅	✅
Type checking	✅	✅	✅	✅	✅	✅	✅
Number utilities	✅	✅	✅	✅	✅	✅	✅
Function utilities	✅	✅	✅	✅	✅	✅	✅
Date utilities	✅	—	—	—	—	—	—
URL utilities	✅	—	—	—	—	—	—
Semver utilities	✅	—	—	—	—	—	—
Observable utilities	✅	—	—	—	—	—	—
Promise guards	✅	—	—	—	—	—	—
Async/parallel	✅	✅	—	✅	—	—	—
Map/Set utilities	✅	—	—	✅	—	—	—
Concurrency primitives	✅	—	—	✅	—	—	—
Pipe/compose	✅	—	_.chain	✅ (flow)	✅	✅	✅
FP (curry, lenses)	🟡 (curry)	—	🟡 (_.curry)	🟡 (curry)	—	✅	—
Random/shuffle	✅	✅	✅	✅	—	—	—
Collection chaining	—	—	✅	—	✅	✅	✅
Statistics	✅	—	—	✅	—	—	—
Async array iteration	🟡	—	—	✅	—	—	—

Rows in bold are gaps on the helpers4 side worth tracking — see typescript/TODO.md for the prioritized list. Map/Set utilities, concurrency primitives, and statistics moved out of bold as of v3.0.5 — helpers4 added @helpers4/map, @helpers4/set, createMutex/createSemaphore, and median/percentile/meanBy/sumBy, closing what used to be es-toolkit-only ground. See the detailed comparison for exactly how close the parity is on each.

Choosing the right library

You need…	Best choice
Date formatting, comparison, normalization	helpers4
URL path manipulation	helpers4
Semver parsing and comparison	helpers4
RxJS observable utilities	helpers4
Typed promise assertions	helpers4
General-purpose utilities and domain-specific gaps, in one modular toolkit	helpers4
Single all-in-one package, no specific domain need	radashi
Fastest/smallest lodash replacement, migrating from lodash	es-toolkit
Full async array iteration (flatMapAsync, reduceAsync, concurrency-limited limitAsync)	es-toolkit
Pipe-based data transformations	remeda
Functional programming (currying, lenses)	ramda or rambda
Maximum function coverage, legacy support	lodash
Multiple needs	helpers4 + radashi or helpers4 + es-toolkit (they’re complementary)