// ECMAScript
import Validator, { ValidationError } from '@darkwolf/validator.mjs'

// CommonJS
const Validator = require('@darkwolf/validator.cjs')
const { ValidationError } = Validator

const validation = new Validator('Ave, Darkwolf!')
  .isString()
  .validate((value, valid) => {
    if (!valid) {
      throw new ValidationError(value, 'Value must be a string.')
    }
  })
  .startsWith('Ave')
validation.valid // => true
if (!+validation) {
  throw new ValidationError(validation.value, `Value must start with 'Ave'.`)
}