Validator

A javascript/typescript validation library

Installation

Npm:
``
$ npm install --save @nbottarini/validator
`

Yarn:
`
$ yarn add @nbottarini/validator
`

Usage

`typescript
function validate(validator: Validator, form: SignupForm) {
validator.check('firstName', form.firstName)
.notNullOrBlank()
.minLength(2)
.maxLength(50)

validator.check('age', form.age)
.optional()
.number('Must be a valid number')
.min(18, 'Must be older than 18')

validator.check('email', form.email)
.email()

validator.check('date', form.date)
.date('DD/MM/YYYY')

validator.check('password', form.password)
.notNullOrBlank()
.minLength(8)

validator.check('confirmPassword', form.confirmPassword)
.equals(form.password)

validator.check('maxPrice', form.maxPrice)
.zeroOrPositive(form.maxPrice)

validator.check('evenNumber', form.evenNumber)
.custom((value) => value % 2 === 0, 'Must be even')
}

const validator = new Validator()
validate(validator, signupForm)
const hasErrors = validator.hasErrors()
const errors = validator.allErrorMessages()

try {
validator.throwIfHasErrors()
} catch (e) {
// Do something with thrown error
}
``