cb-valid

It is very easy to implement in your project. Allows the use of non-decorator based validation. Use validator.js internally to perform the validation.

Installation

npm install cb-valid --save

Note: Please use at least npm@6 when using cb-valid. From npm@6 the dependency tree is flattened, which is required by cb-valid to function properly.

Usage

// Valid for typescript
import CbValid from 'cb-valid'

// Valid for javascript vanilla
const CbValid = requrie("cb-valid").default

// We declare a test string to validate

// We clearly know that the variable testValue does not have a valid email!
// why will you show us the messages entered!


const testValue = "yonicalsin"

// Here you will add the validation you need
const exps = [

   // We will validate if testValue is an email
   {
      // The value (isEmail) is to validate an email
      name: "isEmail",
      // Message in case the email is invalid!
      message: "Email is invalid !"
   },
   {
      // The value (minLength) is to validate at least 5 characters
      name: "minLength",
      // This attribute is necessary to validate the minimum number of characters
      data: {
         min: 5
      },
      // Message in case you do not meet the required conditions
      message: "Email needs at least 4 characters!"
   },
   {
      // The value (maxLength) is to validate a maximum of 10 characters
      name: "maxLength",
      // This attribute is necessary to validate the maximum number of characters
      data: {
         max: 9
      },
      // Message in case you do not meet the required conditions
      message: "Email needs a maximum of 10 characters!"
   }
]

const res = CbValid(testValue, exps)

/**
 * @Return
 * */

/*
{
   status: false,
   messages: [
      "Email is invalid !",
      "Email needs a maximum of 10 characters!"
   ]
}
*/

Passing options

Some functions require a data parameter

export interface Data {
   min: number
   max: number
}

Validation errors

The cb-valid method returns an array of ValidationError objects. Each ValidationError is:

{
    status: Boolean; // Returns true if everything is correct, in case something is not correct it will return false
    messages?: String[]; // Contains all nested validation errors of the property
}

Manual validation

There are several method exist in the Validator that allows to perform non-decorator based validation:

import { Validator } from "cb-valid";

// Validation methods
const validator = new Validator();


   Length(value, {
      min: @number,
      max: @number
   }) // 
   minLength(value, {
      min: @number
   })
   maxLength(value, {
      max: @number
   })

   isEmail(value) // Checks if the string is an email.
   isURL(value) // Checks if the string is an url.
   isFQDN(value) // Checks if the string is a fully qualified domain name (e.g. domain.com).
   isEmpty(value) // Checks if given value is empty (=== '', === null, === undefined).
   isNotEmpty(value)  // Checks if given value is not empty (!== '', !== null, !== undefined).
   isAscii(value) // Checks if the string contains ASCII chars only.
   isBase64(value) // Checks if a string is base64 encoded.
   isCreditCard(value)  // Checks if the string is a credit card.
   isCurrency(value) // Checks if the string is a valid currency amount.
   isDecimal(value) // Checks if the string is a valid decimal value.
   isFullWidth(value) // Checks if the string contains any full-width chars.
   isHexadecimal(value) // Checks if the string is a hexadecimal number.
   isHexColor(value) // Checks if the string is a hexadecimal color.
   isISIN(value) // Checks if the string is an ISIN (stock/security identifier).
   isISO31661Alpha2(value) // Check if the string is a valid ISO 3166-1 alpha-2
   isISO31661Alpha3(value) // Check if the string is a valid ISO 3166-1 alpha-3
   isISO8601(value) // Checks if the string is a valid ISO 8601 date. Use the option strict = true for additional checks for a valid date, e.g. invalidates dates like 2019-02-29.
   isISSN(value) // Checks if the string is a ISSN.
   isJSON(value) // Checks if the string is valid JSON (note: uses JSON.parse).
   isJWT(value) // Checks if the string is valid JWT.
   isLatLong(value) // Checks if the string is a valid latitude-longitude coordinate in the format lat,long
   isLowercase(value) // Checks if the string is lowercase.
   isMACAddress(value) // Checks if the string is a MAC Address.
   isMongoId(value) // Checks if the string is a valid hex-encoded representation of a MongoDB ObjectId.
   isMultibyte(value) // Checks if the string contains one or more multibyte chars.
   isPort(value) // Check if the string is a valid port number.
   isSurrogatePair(value) // Checks if the string contains any surrogate pairs chars.
   isUppercase(value) // Checks if the string is uppercase.
   isVariableWidth(value) // Checks if the string contains variable-width chars.

Backers

Stay in touch

• Author Yoni Calsin
• Twitter Yoni Calsin

Release notes

See information about breaking changes and release notes.

cb-valid v0.0.1

License

Nest is MIT licensed.