Introduction

Indicative is a simple yet powerful data validator for Node.js and browsers. It makes it so simple to write async validations on nested set of data.

Features

  1. First class support for async validations.

  2. Support for nested validations.

  3. Support for custom error formatters.

  4. In built data sanitizor.

  5. Customized and smaller builds for browsers.

Browsers support

Indicative works great on all modern browsers including IE 10 and above. Following is the result of automated tests executed on selected platforms.

saucelabs report

Basic Example

Let’s start with a basic example of defining rules and run validations against data object.

const { validate } = require('indicative')

const rules = {
  email: 'required|email|unique:users',
  password: 'required|min:6|max:30'
}

const data = {
  email: '[email protected]',
  password: 'weak'
}

validate(data, rules)
  .then(() => {
  })
  .catch((errors) => {
  })

As you can see the rules is an object ( called schema ), which defines a set of rules on a given key. The values will be picked from the data object and validated against the defined rules.

Read the syntax guide to learn more about the schema definition.

Please note

  1. Errors inside the catch block are an array of errors, instead of the Javascript Error object.

  2. The validate method stops after the first validation failure, in order to validate all the fields at once, you must use the validateAll method.

    const { validateAll } = require('indicative')
    
    const rules = {
      email: 'required|email|unique:users',
      password: 'required|min:6|max:30'
    }
    
    const data = {}
    
    validateAll(data, rules)
      .then(() => {
      })
      .catch((errors) => {
      })