checkmate

 

Checkmate is a very simple data validator.

Use cases

* form input validation
* model validation

Characteristics

* no dependency
* framework / lib / context agnostic: describe what you expect → send an object → get errors
* does not come with validation functions, write your own or combine with libraries such as is.js

Example

See the react + is_js example.

``js
import checkmate from 'checkmate'
import is from 'is_js'

const checkers = checkmate({
email: {
notEmpty: (str) => !is.empty(str),
isEmail: is.email,
},
password: {
truthy: (str) => !!str,
minLength: (str) => str && str.length > 7,
},
})

const errors = checkers({
email: 'arnaud@efounderscom',
password: false,
})

console.log(errors)

// → { email: ['isEmail'], password: ['truthy'] }
``