# ealush/vest

Vest ✅ Declarative validations framework

Repository: https://github.com/ealush/vest
Canonical: https://ross.abutalabs.com/products/vest
Homepage: https://vestjs.dev/
Language: TypeScript
License: MIT
License Family: permissive
Topics: validation-library, unit-testing, form-validation, react-validation-library, validation, vue-validation, svelte-validation, react-validation, javascript, typescript, forms, form, hacktoberfest
Last push: 2026-08-26T01:24:47+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 78, longevity 100
- inputs: {"age_days": 2472, "days_push": 8, "days_rel": 149, "gap_med": 0, "n_releases_24m": 14}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2665, forks 91 (observed 2026-08-28T04:07:09.102756+00:00)

## What it is
Vest is a declarative validation framework for JavaScript/TypeScript that lets you write validation rules like unit tests using a Jest-style suite API. It provides a stateful runtime with focused runs, retained results, and race-safe async validation, usable across React, Vue, Svelte, Angular, and server-side Node.js.

## Use cases
- validate form fields incrementally as the user types
- handle async validation race conditions like username availability checks
- share the same validation suite between client and server
- validate multi-step forms with groups and conditional fields
- write type-safe validation with schema inference
- integrate validation with React Hook Form, Angular, or Svelte form libraries

## When to choose
- you need stateful, incremental form validation that remembers previous results
- your forms have async checks that can complete out of order
- you want validation logic decoupled from any UI framework
- you need to reuse the same validation rules on both client and server

## When to avoid
- you only need simple one-shot synchronous validation of static data
- your framework's built-in validation already covers your needs
- you prefer schema-only validation without a test-like suite API

## Facets
- artifact type: library
- maturity: active
- function: form-handling, testing, type-system, middleware
- domain: web-development, frontend, developer-tools, apis
- platform: browser, cross-platform
- tags: validation, form-validation, async-validation, declarative, typescript, react, vue, svelte, angular, standard-schema, race-safety, jest-like-syntax, nodejs, web-server

## Member repositories
- ealush/vest (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:09.102756+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:18:17.186077+00:00, confidence not recorded.
  - readme: https://github.com/ealush/vest (fetched 2026-08-28T04:07:09.102756+00:00, sha 962f7aff1228)
  - homepage: https://vestjs.dev/ (fetched 2026-08-29T10:01:19.166709+00:00, sha c37cc52811d8)
  - site_page: https://vestjs.dev/docs/community_resources/integrations (fetched 2026-08-29T10:01:19.180535+00:00, sha ad34f82cc4d0)
  - site_page: https://vestjs.dev/docs/upgrade_guide (fetched 2026-08-29T10:01:19.169414+00:00, sha d775925c70b4)
  - site_page: https://vestjs.dev/docs/get_started (fetched 2026-08-29T10:01:19.171519+00:00, sha 8c9e966fe821)
  - site_page: https://vestjs.dev/docs/api_reference (fetched 2026-08-29T10:01:19.173212+00:00, sha 9681fc9e7f2f)
  - site_page: https://vestjs.dev/docs/5.x/get_started (fetched 2026-08-29T10:01:19.175202+00:00, sha b4c9b8b4adde)
  - site_page: https://vestjs.dev/docs/4.x/get_started (fetched 2026-08-29T10:01:19.177022+00:00, sha 647a8a21a821)
  - site_page: https://vestjs.dev/docs/tutorials (fetched 2026-08-29T10:01:19.178844+00:00, sha 1ab50844d4ae)
- Data as of 2026-08-30T08:39:29.467469+00:00.