Features

  • A generic validation system mostly represented by an abstract validation class, uval/validator/Abstract.
  • A few validators available from known validation libraries available through the registry, uval/registry, you can add your own easily be using uval/validator/Generic.

  • A few validation utilities that lets you:

    • Compose an object level validation uval/validator/Object
    • Compose a validation chain uval/validator/ValidationChain which is ensuring that the input valids all the provided validators
    • Make an or over a set of validators uval/validator/Or where the input must valid at least one validator
    • Apply a validation over all elements of an array uval/validator/Array
  • A failure data retrieval logic that let you do whatever you want to handle the error and the translation through the usage of the getFailureData() method.
  • Support a context for validation, the validate function takes a second context argument and broadcast it to all subvalidators when any.
  • Handle asynchronous validation since everything is made of promise (after version 1.0.0)

What you will not find in uval

  • No mechanism handling the translation is provided. You are supposed to do this by handling what comes out of getFailureData(). Error identifiers are on purpose non english string, a correct error handling should include a translation of the error message and maybe a retrieval of the input or the context, this is out of our scope.
  • uval can be use in anything that supports require (e.g.: node backend developement or front end through browserify).

Similar projects

Available as npm packages: