fp-ts alternatives
8 packages that do the same job as fp-ts: true-myth, @effect/language-service, neverthrow, type-fest, tsutils, typical, utility-types, ts-toolbelt. Figures below are from npm, GitHub and Bundlephobia.
| Package | Weekly downloads | 12-month change | Gzip | Dependencies | Last release | Module | Types | Runtimes |
|---|---|---|---|---|---|---|---|---|
| fp-ts This package | 3.3m | +17% | - | 0 | 1 year ago | ESM + CommonJS | Bundled | - |
| true-myth | 501.2k | +65% | - | 0 | 4 months ago | ESM only | Bundled | - |
| @effect/language-service | 670k | - | - | 0 | 1 month ago | CommonJS | None | - |
| neverthrow | 2m | +159% | - | 0 | 1 year ago | ESM + CommonJS | Bundled | - |
| type-fest | 285.1m | +47% | - | 1 | 7 days ago | ESM only | Bundled | - |
| tsutils | 16.1m | -17% | - | 1 | 5 years ago | - | None | - |
| typical | 10.2m | +85% | - | 0 | 1 year ago | ESM + CommonJS | None | - |
| utility-types | 7.8m | +125% | - | 0 | 2 years ago | CommonJS | Bundled | - |
| ts-toolbelt | 7.1m | +88% | - | 0 | 5 years ago | CommonJS | Bundled | - |
12-month change compares the average of the last 4 weeks of downloads with the first 4 weeks of the 52-week series. Gzip size is for the whole package (Bundlephobia). Runtimes are taken from each package's own documentation; "-" means not recorded.
A library for safe functional programming in JavaScript, with first-class support for TypeScript
Compared with fp-ts
- 6.6x fewer weekly downloads (501.2k vs 3.3m)
- ESM only vs ESM + CommonJS
- Declares Node.js 18.* || >= 20.* vs none declared
- Last release 25 May 2026 vs 18 Aug 2025
- 8.5x fewer GitHub stars (1.4k vs 11.6k)
A Language-Service Plugin to Refactor and Diagnostic effect-ts projects
Compared with fp-ts
- 5.0x fewer weekly downloads (670k vs 3.3m)
- CommonJS vs ESM + CommonJS
- No types vs bundled types
- Last release 7 Aug 2026 vs 18 Aug 2025
- 27x fewer GitHub stars (421 vs 11.6k)
Stop throwing errors, and instead return Results!
Compared with fp-ts
- 1.7x fewer weekly downloads (2m vs 3.3m)
- Declares Node.js >=18 vs none declared
- Last release 21 Feb 2025 vs 18 Aug 2025
- 1.5x fewer GitHub stars (7.7k vs 11.6k)
A collection of essential TypeScript types
Compared with fp-ts
- 86x more weekly downloads (285.1m vs 3.3m)
- 1 dependency vs 0
- ESM only vs ESM + CommonJS
- Declares Node.js >=20 vs none declared
- Last release 17 Sept 2026 vs 18 Aug 2025
- 1.5x more GitHub stars (17.4k vs 11.6k)
utilities for working with typescript's AST
Compared with fp-ts
- 4.9x more weekly downloads (16.1m vs 3.3m)
- 1 dependency vs 0
- - vs ESM + CommonJS
- No types vs bundled types
- Declares Node.js >= 6 vs none declared
- Last release 7 Mar 2021 vs 18 Aug 2025
- 35x fewer GitHub stars (331 vs 11.6k)
Isomorphic, functional type-checking for Javascript
Compared with fp-ts
- 3.1x more weekly downloads (10.2m vs 3.3m)
- No types vs bundled types
- Declares Node.js >=12.17 vs none declared
- Last release 12 Nov 2024 vs 18 Aug 2025
- 462x fewer GitHub stars (25 vs 11.6k)
Utility Types Collection for TypeScript
Compared with fp-ts
- 2.3x more weekly downloads (7.8m vs 3.3m)
- CommonJS vs ESM + CommonJS
- Declares Node.js >= 4 vs none declared
- Last release 18 Jan 2024 vs 18 Aug 2025
- 2.0x fewer GitHub stars (5.8k vs 11.6k)
TypeScript's largest utility library
Compared with fp-ts
- 2.1x more weekly downloads (7.1m vs 3.3m)
- CommonJS vs ESM + CommonJS
- Last release 10 Mar 2021 vs 18 Aug 2025
- 1.6x fewer GitHub stars (7.2k vs 11.6k)
Indexability: Indexed.