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npmjs.org "validation-library" keyword

reactrix 1.0.7
Validate forms in React, without the stress 😰
8 versions - Latest release: over 3 years ago - 102 downloads last month - 36 stars on GitHub - 1 maintainer
Top 6.2% on npmjs.org
vast 2.0.0 💰
Vest ✅ Declarative validations framework
110 versions - Latest release: over 2 years ago - 1 dependent package - 11 dependent repositories - 33.5 thousand downloads last month - 2,476 stars on GitHub - 1 maintainer
Top 2.9% on npmjs.org
n4s 5.0.23 💰
Assertion library for form validations
152 versions - Latest release: about 1 month ago - 3 dependent packages - 33 dependent repositories - 35.8 thousand downloads last month - 2,476 stars on GitHub - 1 maintainer
Top 2.3% on npmjs.org
vest-utils 1.2.13 💰
Vest ✅ Declarative validations framework
88 versions - Latest release: about 1 month ago - 5 dependent packages - 77 dependent repositories - 61.5 thousand downloads last month - 2,476 stars on GitHub - 1 maintainer
Top 4.0% on npmjs.org
anyone 2.0.0 💰
Vest ✅ Declarative validations framework
110 versions - Latest release: over 2 years ago - 4 dependent packages - 3 dependent repositories - 1.79 thousand downloads last month - 2,476 stars on GitHub - 1 maintainer
robust-validator 1.1.0
Rule-based data validation library
18 versions - Latest release: 3 months ago - 751 downloads last month - 12 stars on GitHub - 1 maintainer
vestjs-runtime 1.2.12 💰
Internal runtime module used by Vest
49 versions - Latest release: about 1 month ago - 1 dependent repositories - 16.8 thousand downloads last month - 2,476 stars on GitHub - 1 maintainer
handy-types 2.1.0
A collection of small utility functions to check variable types
8 versions - Latest release: 5 months ago - 5 dependent packages - 2 dependent repositories - 27 downloads last month - 3 stars on GitHub - 1 maintainer
Top 1.3% on npmjs.org
knockout.validation 2.0.4
A KnockoutJS Plugin for model and property validation
9 versions - Latest release: over 4 years ago - 31 dependent packages - 98 dependent repositories - 30.2 thousand downloads last month - 1,023 stars on GitHub - 2 maintainers
Top 9.8% on npmjs.org
ahv13-validator 2.0.1
Validates the AHV 13 Number (swiss social security number)
8 versions - Latest release: over 1 year ago - 3 dependent packages - 1 dependent repositories - 730 downloads last month - 1 stars on GitHub - 1 maintainer
values-validator 1.0.2
Another library/framework agnostic form values validator
1 version - Latest release: over 5 years ago - 1 dependent repositories - 4 downloads last month - 0 stars on GitHub - 1 maintainer
@querkmachine/vanilla-validation 1.3.0
Accessible, styleable, customisable ValidityState.
5 versions - Latest release: over 2 years ago - 2 dependent packages - 7 downloads last month - 2 stars on GitHub - 1 maintainer
Top 4.3% on npmjs.org
validate-typescript 4.0.2
Extensible schema based validator that supports typescript typing.
44 versions - Latest release: almost 5 years ago - 6 dependent packages - 28 dependent repositories - 7.09 thousand downloads last month - 32 stars on GitHub - 1 maintainer
@4lolo/knockout.validation 2.0.5
A KnockoutJS Plugin for model and property validation
2 versions - Latest release: over 2 years ago - 1 dependent package - 11 downloads last month - 1,023 stars on GitHub - 1 maintainer
rest-data-validator 2.0.14 💰
A versatile data validation library for RESTful APIs, supporting a wide range of data types and v...
24 versions - Latest release: 2 days ago - 116 downloads last month - 7 stars on GitHub - 1 maintainer
ivo 1.4.0
A different approach to schema valitation
15 versions - Latest release: 3 days ago - 454 downloads last month - 5 stars on GitHub - 1 maintainer
Top 10.0% on npmjs.org
micro-validator 0.0.5
A minimalistic & extensible validation library for javascript
5 versions - Latest release: about 5 years ago - 2 dependent packages - 18 dependent repositories - 38 downloads last month - 16 stars on GitHub - 1 maintainer
Top 6.8% on npmjs.org
react-validatable-form 5.0.2
React validatable form hook that is used to make dynamic client side validations on react forms
86 versions - Latest release: 3 months ago - 2 dependent packages - 5 dependent repositories - 276 downloads last month - 21 stars on GitHub - 2 maintainers
@basekits/kit-validator 1.1.2
Validation functions kit for basekits.
4 versions - Latest release: about 4 years ago - 10 dependent packages - 18 downloads last month - 1 maintainer
assertio-js-client 0.0.13
assertio visibility framework js client
2 versions - Latest release: over 4 years ago - 1 dependent package - 1 dependent repositories - 6 downloads last month - 1 stars on GitHub - 1 maintainer
use-input-value 1.0.0
React hook that allow us an easy validation and manage styles
1 version - Latest release: about 4 years ago - 1 dependent package - 2 dependent repositories - 5 downloads last month - 1 stars on GitHub - 1 maintainer
@netsells/password-validator 5.0.4
Validates password according to flexible and intuitive specifications
1 version - Latest release: over 4 years ago - 1 dependent package - 105 downloads last month - 280 stars on GitHub - 4 maintainers
Top 1.7% on npmjs.org
password-validator 5.3.0
Validates password according to flexible and intuitive specifications
28 versions - Latest release: about 2 years ago - 105 dependent packages - 1,564 dependent repositories - 422 thousand downloads last month - 280 stars on GitHub - 1 maintainer
regula 1.3.5
Annotation-based JavaScript Form Validator
2 versions - Latest release: about 3 years ago - 1 dependent repositories - 13 downloads last month - 126 stars on GitHub - 1 maintainer
ep-knockout.validation 2.0.3
A KnockoutJS Plugin for model and property validation
1 version - Latest release: over 7 years ago - 2 dependent packages - 1 dependent repositories - 4 downloads last month - 1,023 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate-rules 4.12.6 💰
Form Validation for Vue.js
2 versions - Latest release: about 1 month ago - 117 downloads last month - 10,563 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate-joi 4.12.6 💰
vee-validate integration with joi schema validation
1 version - Latest release: about 1 month ago - 60 downloads last month - 10,563 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate 4.12.6 💰
Painless forms for Vue.js
10 versions - Latest release: about 1 month ago - 147 downloads last month - 10,563 stars on GitHub - 1 maintainer
Top 1.0% on npmjs.org
@vee-validate/i18n 4.12.8 💰
Localization module for VeeValidate
123 versions - Latest release: 7 days ago - 37 dependent packages - 241 dependent repositories - 206 thousand downloads last month - 10,563 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate-i18n 4.12.6 💰
Localization module for VeeValidate
2 versions - Latest release: about 1 month ago - 119 downloads last month - 10,563 stars on GitHub - 1 maintainer
@vee-validate/joi 4.12.8 💰
vee-validate integration with joi schema validation
14 versions - Latest release: 7 days ago - 146 downloads last month - 10,563 stars on GitHub - 1 maintainer
havunen-vee-validate 2.3.1 💰
Template Based Validation Framework for Vue.js
2 versions - Latest release: 7 months ago - 6 downloads last month - 10,563 stars on GitHub - 1 maintainer
vee-validate-himmetna 2.0.0-beta.25 💰
Simple Vue.js input validation plugin
1 version - Latest release: over 6 years ago - 1 dependent repositories - 7 downloads last month - 10,563 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate-nuxt 4.12.6 💰
Official vee-validate nuxt module
1 version - Latest release: about 1 month ago - 59 downloads last month - 10,563 stars on GitHub - 1 maintainer
Top 0.5% on npmjs.org
vee-validate 4.12.8 💰
Painless forms for Vue.js
332 versions - Latest release: 7 days ago - 1,001 dependent packages - 14,190 dependent repositories - 2.05 million downloads last month - 10,563 stars on GitHub - 1 maintainer
Top 0.8% on npmjs.org
@vee-validate/rules 4.12.8 💰
Form Validation for Vue.js
119 versions - Latest release: 7 days ago - 60 dependent packages - 407 dependent repositories - 326 thousand downloads last month - 10,563 stars on GitHub - 1 maintainer
@vee-validate/nuxt 4.12.8 💰
Official vee-validate nuxt module
38 versions - Latest release: 7 days ago - 5 dependent packages - 19 dependent repositories - 86.4 thousand downloads last month - 10,563 stars on GitHub - 1 maintainer
@vee-validate/valibot 4.12.8 💰
vee-validate integration with valibot schema validation
20 versions - Latest release: 7 days ago - 1 dependent repositories - 5.17 thousand downloads last month - 10,563 stars on GitHub - 1 maintainer
vee-validate-edge 4.7.0-edge.0 💰
Form Validation for Vue.js
9 versions - Latest release: over 1 year ago - 1 dependent repositories - 26 downloads last month - 10,563 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate-yup 4.12.6 💰
vee-validate integration with yup schema validation
1 version - Latest release: about 1 month ago - 62 downloads last month - 10,563 stars on GitHub - 1 maintainer
vee-validate-es 2.0.0-beta.15 💰
Simple Vue.js input validation plugin
2 versions - Latest release: over 7 years ago - 2 dependent repositories - 11 downloads last month - 10,563 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate-valibot 4.12.6 💰
vee-validate integration with valibot schema validation
1 version - Latest release: about 1 month ago - 64 downloads last month - 10,563 stars on GitHub - 1 maintainer
briicks-vee-validate 4.8.6 💰
Form Validation for Vue.js
1 version - Latest release: about 1 year ago - 894 downloads last month - 10,563 stars on GitHub - 1 maintainer
@zaalbarxx/vee-validate-zod 4.12.6 💰
vee-validate integration with zod schema validation
1 version - Latest release: about 1 month ago - 98 downloads last month - 10,563 stars on GitHub - 1 maintainer
@havunen/vee-validate 2.3.5 💰
Template Based Validation Framework for Vue.js
4 versions - Latest release: 5 months ago - 18 downloads last month - 10,563 stars on GitHub - 1 maintainer
@vee-validate/yup 4.12.8 💰
vee-validate integration with yup schema validation
44 versions - Latest release: 7 days ago - 4 dependent packages - 8 dependent repositories - 95 thousand downloads last month - 10,563 stars on GitHub - 1 maintainer
Top 1.4% on npmjs.org
@vee-validate/zod 4.12.8 💰
vee-validate integration with zod schema validation
108 versions - Latest release: 7 days ago - 14 dependent packages - 65 dependent repositories - 173 thousand downloads last month - 10,563 stars on GitHub - 1 maintainer
@xavism/vee-validate 3.3.4 💰
Template Based Validation Framework for Vue.js
2 versions - Latest release: almost 4 years ago - 1 dependent package - 5 downloads last month - 10,547 stars on GitHub - 1 maintainer
Top 2.1% on npmjs.org
sveltekit-superforms 2.13.1 💰
Making SvelteKit forms a pleasure to use!
195 versions - Latest release: 9 days ago - 7 dependent packages - 205 dependent repositories - 125 thousand downloads last month - 1,572 stars on GitHub - 1 maintainer
Top 4.4% on npmjs.org
lc-form-validation 2.0.0
lcFormValidation is an async form validation library heavily based on JavaScript (no HTML attribu...
14 versions - Latest release: over 5 years ago - 7 dependent packages - 66 dependent repositories - 376 downloads last month - 58 stars on GitHub - 1 maintainer
Top 2.4% on npmjs.org
cron-validate 1.4.5
cron-validate is a cron-expression validator written in TypeScript.
20 versions - Latest release: over 1 year ago - 26 dependent packages - 576 dependent repositories - 432 thousand downloads last month - 65 stars on GitHub - 1 maintainer
joi4j 0.1.2 💰
Adds validation for Neo4j data types
6 versions - Latest release: about 5 years ago - 1 dependent package - 1 dependent repositories - 11 downloads last month - 2 stars on GitHub - 1 maintainer
bml-vee-validate 1.1.0 💰
Simple Vue.js input validation plugin
3 versions - Latest release: about 4 years ago - 2 dependent packages - 27 downloads last month - 10,547 stars on GitHub - 1 maintainer
volder 2.0.3
schema builder and validating
13 versions - Latest release: about 2 years ago - 21 downloads last month - 101 stars on GitHub - 1 maintainer
national-code 0.2.0
Simple library to validate Iranian national code.
4 versions - Latest release: about 6 years ago - 2 dependent packages - 1 dependent repositories - 14 downloads last month - 32 stars on GitHub - 1 maintainer
vue-val 1.2.3
Validation toolkit for VueJS. Offers both custom and 'plug and play' validation.
24 versions - Latest release: over 4 years ago - 1 dependent repositories - 31 downloads last month - 1 stars on GitHub - 1 maintainer
fluent-schemer 3.0.9
Small and intuitive umd validation library that provides an elegant way to express validation logic.
19 versions - Latest release: over 5 years ago - 2 dependent packages - 1 dependent repositories - 50 downloads last month - 47 stars on GitHub - 1 maintainer
@sabyasachibiswal/validator 1.0.5
Validate input data with rules and customised error messages.
6 versions - Latest release: almost 3 years ago - 1 dependent package - 1 dependent repositories - 10 downloads last month - 0 stars on GitHub - 1 maintainer
@precision-nutrition/vee-validate 2.1.8 💰
Simple Vue.js input validation plugin
3 versions - Latest release: over 5 years ago - 1 dependent package - 1 dependent repositories - 256 downloads last month - 10,547 stars on GitHub - 12 maintainers
Top 4.9% on npmjs.org
@vinejs/vine 2.0.0 💰
Form data validation library for Node.js
17 versions - Latest release: about 2 months ago - 10 dependent packages - 1 dependent repositories - 111 thousand downloads last month - 960 stars on GitHub - 2 maintainers
sveltekit-superforms-branded 1.10.2 💰
Making SvelteKit validation and displaying of forms easier than ever!
1 version - Latest release: 6 months ago - 4 downloads last month - 1,892 stars on GitHub - 1 maintainer
sveltekit-superforms-temporary-fork 1.0.1 💰
Making SvelteKit validation and displaying of forms easier than ever!
2 versions - Latest release: 11 months ago - 5 downloads last month - 1,892 stars on GitHub - 1 maintainer
onedionys-validation-library 5.0.0
One Dionys (Validation Library) - Packages for user input validation such as emails, URLs, or num...
7 versions - Latest release: about 2 months ago - 1.55 thousand downloads last month - 19 stars on GitHub - 1 maintainer
vanilla-abide 1.2.4
A VanillaJS translation for Foundation Abide Form Validation
9 versions - Latest release: about 4 years ago - 1 dependent repositories - 26 downloads last month - 5 stars on GitHub - 1 maintainer
simple-valley 0.16.0
Simple Validations for objects
25 versions - Latest release: over 2 years ago - 52 downloads last month - 4 stars on GitHub - 1 maintainer
cerberus 1.0.4
Object Validator with Typescript support
6 versions - Latest release: about 5 years ago - 3 dependent packages - 4 dependent repositories - 65 downloads last month - 14 stars on GitHub - 1 maintainer
coalesce-x 1.1.0
Return the first non-nullish argument. SQL COALESCE for JavaScript
3 versions - Latest release: about 3 years ago - 1 dependent package - 16 downloads last month - 0 stars on GitHub - 1 maintainer
nodejs-schema-rules 1.0.5-alpha
The CLI tool automatically generates basic validation rules for popular libraries such as JOI, Va...
6 versions - Latest release: 3 months ago - 21 downloads last month - 0 stars on GitHub - 1 maintainer
Top 1.6% on npmjs.org
tldjs 2.3.1
JavaScript API to work against complex domain names, subdomains and URIs.
34 versions - Latest release: about 6 years ago - 128 dependent packages - 490 dependent repositories - 661 thousand downloads last month - 453 stars on GitHub - 1 maintainer
f-validators 0.0.8
Toolkit of validation functions easy to compose into bigger validators.
8 versions - Latest release: over 7 years ago - 1 dependent package - 1 dependent repositories - 44 downloads last month - 0 stars on GitHub - 1 maintainer
react-inputs-validator 1.1.1
Simple input validator component
3 versions - Latest release: over 2 years ago - 1 dependent package - 1 dependent repositories - 10 downloads last month - 7 stars on GitHub - 1 maintainer
vuersatile-components 0.2.1
[!["Buy Me A Coffee"](https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png)](http...
29 versions - Latest release: about 1 year ago - 18 downloads last month - 7 stars on GitHub - 1 maintainer
@midwestern/react-native-validation 0.0.5
Promise-based validation for React Native
5 versions - Latest release: over 4 years ago - 1 dependent package - 1 dependent repositories - 23 downloads last month - 2 stars on GitHub - 3 maintainers
lv-validation 1.1.32
lv-validation is a Javascript library that provides a comprehensive set of validation rules for i...
5 versions - Latest release: about 1 year ago - 3 downloads last month - 3 stars on GitHub - 1 maintainer
x2node-validators 1.6.1
Record validation and normalization.
21 versions - Latest release: over 5 years ago - 2 dependent packages - 1 dependent repositories - 48 downloads last month - 2 stars on GitHub - 1 maintainer
Top 7.1% on npmjs.org
bejs 2.0.1
Simple, light-weight assertions framework for javascript
35 versions - Latest release: about 6 years ago - 38 dependent packages - 33 dependent repositories - 342 downloads last month - 12 stars on GitHub - 2 maintainers
js-fixerr 2.2.1
Lightweight and fast validation library for javascript
30 versions - Latest release: over 5 years ago - 1 dependent package - 1 dependent repositories - 79 downloads last month - 1 stars on GitHub - 1 maintainer
with-controlled-form 1.1.6
This library helps you to convert `presentational Forms` to `state controlled forms` and add vali...
24 versions - Latest release: over 4 years ago - 1 dependent repositories - 67 downloads last month - 5 stars on GitHub - 1 maintainer
Top 1.7% on npmjs.org
vest 5.2.12 💰
Declarative Form Validations Framework
300 versions - Latest release: about 1 month ago - 18 dependent packages - 62 dependent repositories - 47.4 thousand downloads last month - 2,476 stars on GitHub - 1 maintainer
Top 1.6% on npmjs.org
context 4.0.0 💰
Vest ✅ Declarative validations framework
121 versions - Latest release: over 1 year ago - 15 dependent packages - 177 dependent repositories - 47.4 thousand downloads last month - 2,476 stars on GitHub - 1 maintainer
voluptateanimi 1.1.5
7 versions - Latest release: about 1 month ago - 162 downloads last month - 1 maintainer
@appgeist/restful-next-api 1.5.7
Build restful API methods for Next.js > 9 and validate the incoming requests with yup
27 versions - Latest release: almost 4 years ago - 1 dependent package - 1 dependent repositories - 31 downloads last month - 7 stars on GitHub - 1 maintainer
bitcoin-address-soft-regex-validation 1.1.3
A single-function package to performa soft (no checksum) bitcoin address (Base58 and Bech32) vali...
6 versions - Latest release: almost 5 years ago - 1 dependent package - 2 dependent repositories - 42 downloads last month - 2 stars on GitHub - 1 maintainer
node-body-validator 1.0.4
Powerful promise based validator module to efficiently validate node body params
5 versions - Latest release: about 3 years ago - 1 dependent package - 1 dependent repositories - 11 downloads last month - 0 stars on GitHub - 1 maintainer
validate-polish 2.1.40
Utility library for validation of PESEL, NIP, REGON, identity card etc. Aimed mostly at Polish en...
30 versions - Latest release: over 1 year ago - 9 dependent repositories - 19.3 thousand downloads last month - 42 stars on GitHub - 1 maintainer
express-body-validator 1.0.5
Powerful promise based validator module to efficiently validate express POST params
5 versions - Latest release: about 4 years ago - 1 dependent package - 1 dependent repositories - 10 downloads last month - 1 stars on GitHub - 1 maintainer
dictasit 1.2.0
6 versions - Latest release: about 1 month ago - 141 downloads last month - 1 maintainer
@sa-net/isa 0.0.8
A simple and lightweight library for creating and validating javascript variables. It is designed...
8 versions - Latest release: about 1 year ago - 3 downloads last month - 0 stars on GitHub - 1 maintainer
tczj-test 0.0.1 💰
tczj-test
1 version - Latest release: over 6 years ago - 1 dependent repositories - 11 downloads last month - 10,547 stars on GitHub - 1 maintainer
@ianno/validation 0.0.3
Decorator based TypeScript validation library
3 versions - Latest release: over 4 years ago - 1 dependent package - 1 dependent repositories - 7 downloads last month - 2 stars on GitHub - 1 maintainer
esselaboriosam 1.3.0
4 versions - Latest release: about 1 month ago - 60 downloads last month - 1 maintainer
vee-validate-ie 2.1.0-beta.5.1 💰
Simple Vue.js input validation plugin
3 versions - Latest release: almost 6 years ago - 1 dependent repositories - 17 downloads last month - 10,547 stars on GitHub - 1 maintainer
baridetta 1.5.0
JavaScript Universal Single Object Validator
7 versions - Latest release: about 4 years ago - 2 dependent packages - 16 downloads last month - 5 stars on GitHub - 1 maintainer
vayder 1.0.0
A library that allows you to validate inputs on express routes via middlewares. It leverages the ...
1 version - Latest release: almost 7 years ago - 1 dependent repositories - 15 downloads last month - 26 stars on GitHub - 1 maintainer
typed-validation 0.8.2
Validate Objects Against TypeScript Interfaces
14 versions - Latest release: almost 6 years ago - 2 dependent packages - 3 dependent repositories - 105 downloads last month - 3 stars on GitHub - 1 maintainer
@damilaredev/react-form-validation-hook 1.3.0
React Form Validation
11 versions - Latest release: 12 months ago - 1 dependent package - 1 dependent repositories - 94 downloads last month - 2 stars on GitHub - 1 maintainer
mark-lin-validator 1.1.1
This libary is a validator manager. it helps us to validate json easy. like the code below.
5 versions - Latest release: almost 7 years ago - 1 dependent package - 1 dependent repositories - 9 downloads last month - 0 stars on GitHub - 1 maintainer
Top 5.8% on npmjs.org
@typeofweb/schema 0.7.3 💰
`@typeofweb/schema` is a lightweight and extensible library for data validation with full TypeScr...
43 versions - Latest release: about 3 years ago - 2 dependent packages - 6 dependent repositories - 1.89 thousand downloads last month - 139 stars on GitHub - 1 maintainer
react-formstate-validation 0.3.8
A validation library for react-formstate
18 versions - Latest release: over 6 years ago - 1 dependent package - 3 dependent repositories - 74 downloads last month - 3 stars on GitHub - 1 maintainer
container-number-validation 1.1.5
A simple package for check container number validation
9 versions - Latest release: almost 6 years ago - 1 dependent package - 1 dependent repositories - 471 downloads last month - 1 stars on GitHub - 1 maintainer
Related Keywords
validation 137 validator 80 javascript 64 form 63 validate 60 form-validation 55 forms 49 validations 43 hacktoberfest 39 vuejs 37 vue 36 typescript 34 vee-validate 31 vue3 30 vue2 30 vue3-composition-api 29 inputs 29 Vue 27 VueJS 27 nodejs 24 functional-programming 15 schema 14 react 13 react-hooks 11 input 10 js 10 rules-engine 9 input-validation 9 javascript-library 9 change-tracking 9 unit-testing 8 react-validation 8 form validation 8 library 7 react-validation-library 7 vue-validation 7 svelte-validation 7 joi 6 npm 6 ts 6 validation-engine 6 node 6 check 5 express 5 validate-js 5 decorators 5 form-validator 5 yup 5 data 5 reactjs 5 assert 4 rest 4 api 4 hooks 4 framework 4 nuxt 4 nuxtjs 4 validatorjs 4 validation library 4 json 4 typescript-library 4 email 4 laravel 4 validators 4 assertion 4 browser 4 url 4 public-suffix-list 3 tldextract 3 node-module 3 quia 3 node-js 3 nodejs-modules 3 client-side-validation 3 hook 3 Validation 3 assertions 3 valid 3 hostname 3 public suffix 3 subdomain 3 domain name 3 sveltekit 3 uri 3 svelte 3 domain 3 sld 3 tld 3 arktype 3 typebox 3 valibot 3 es2015 3 zod 3 email-validation 3 schema validation 3 data validation 3 package 3 knockout-validation 3 knockoutjs 3 knockoutjs-plugin 3