valid8tor

A dead simple JS validation library inspired by Laravel rules.

Installation

npm i valid8tor --save

Usage

Valid8tor takes an object (the data) and validate using set of rules define in object containing the same keys and validation rules. Example:

import { validate, validateSync } from 'valid8tor';

// You can combine several rules
const rules = {
  firstname: 'required|alpha_dash|min:3',
  lastname: 'alpha_dash|nullable',
  email: 'required|email',
  jobs: 'array|min:1|max:5',
  website: 'required|url',
};

const data = {
  firstname: 'John',
  lastname: 'Doe',
  email: 'john@doe.io',
  jobs: ['Web Developer', 'Traveler', 'Lifehacker'],
  website: 'https://askthomas.co.uk',
};

validate(data, rules).then(() => {
  // data is valid
}).catch((errors) => {
  // not valid
  console.log(errors);
});

// Or if you want synchronous validation
validateSync(data, rules) // => Will return either [] or example: [{ field: 'firstname', error: 'The firstname field is required' }]

valid8tor provides 3 functions:

• validate(dataObj, rulesObj) Validate an object for a given set of rules and return a promise.
• validateSync(dataObj, rulesObj) Validate and object and return an array of error or empty array if the data is valid.
• isValid(dataObj, rulesObj) Validate the object and return true or false if valid or not.

Validation rules

| Rule | Description | |--|--| | required | Make sure a value is defined. | | nullable | Accept a value as null or undefined. | min:3 | String Check that string has minimum length (3 characters in this example). Number: Check that a number is at least equal to 3. Array: Check that an array has at leat 3 elements.| | max:10 | String: Check that string has a maximum length (10 characters in this example). Number: Check that a number is at 10 at max. Array: Check that an array has at max 10 elements. | | size:5 | String: Check that the length of the string is equal to 5 (in the example). Array Check that the size of an array is equal to 5.| | between:1,5 | Number Check that a number is in the interval (inclusive). Array: Check that an array has a number at least one and at max 5 elements (in this example). String: Check that the length of the string is in that interval | | email | Check that a value is a correct email address.| | url | Check that a value is a valid a URL (http or https only for now)| | ip | Check that a value is a valid IP v4 address | | ipv6 | Check that a value is a valid IP v6 address | | alpha | Check that the value only contains alphabetic characters (a to z and A to Z)| | alpha_dash | Check that the value only contains alphabetic characters, hyphens and underscores (a-z, A-Z, - and _ ) | | alpha_num | Check that the value only contains alphabetic characters, hyphens and underscores (a-z, A-Z and 0-9 )| | alphanum_dash | Check that the value only contains alphabetic characters, numbers, hyphens and underscores (a-z, A-Z, 0-9, - and _ )| | integer | Check that the value is an integer (positive, negative, null and 0x0)| | decimal | Check that the value is a decimal (positive, negative or null) | | numeric | Check that the value is numeric (not null, not decimal)| | base64 | Check that the value is base64 format | | array | Check that the value is an array (empty or not)| | accepted | Check acceptance, example when you have terms and conditions, etc. This rule accept: 1, true, yes and on.| | string | Check that the value is a string | | boolean | Check that value is a boolean | | date | Check that the value is a Date or a moment instance. | after | Coming soon | | after_or_equal | Coming soon | | before | Coming soon | | before_or_equal | Coming soon |

Testing

Testing with Mocha: npm run test

Contributions

You can use dev.js as a playground using Parcel parcel index.html

To do

• Allow override of error messages
• Allow to pass a object containing custom validation functions
• Add Date/time related rules (after, before, etc)
• Add more tests