Installation

NPM

$ npm i regex-validation-tool

PNPM

$ pnpm add regex-validation-tool

Usage

import {isEmail} from  "regex-validation-tool"

const bool = isEmail("[email protected]") //bool == true

Defined methods

• isEmail

• isPhone

• isUrl

• isPasswordLow

• isPasswordMedium

• isPasswordStrong

Creating custom validator

To create a custom validator import customRegex function. It requires regex as a parameter and returns a function, with what you can validate string with earlier specified regex.

import {customRegex} from  "regex-validation-tool"
 

const notBlank = customRegex(/\S/)
const bool = notBlank("test") // bool == true

Password levels

| Level | Description | | ---| --- | | Low | A password between 7 to 16 characters contains only characters, numeric digits, and an underscore, and the first character must be a letter.| |Medium| Password must contain six characters or more and has at least one lowercase and one uppercase alphabetical character or has at least one lowercase and one numeric character or has at least one uppercase and one numeric character. | |Strong| A password between 8 to 15 characters which contain at least one lowercase letter, one uppercase letter, one numeric digit, and one special character |

Regexes used in methods

const isEmail = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|.(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/

  

const isPhone = /\(?([0-9]{3})\)?([ .-]?)([0-9]{3})\2([0-9]{4})/

  

const isUrl = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig

  

const isPasswordLow = /^[A-Za-z]\w{7,15}$/

  

const isPasswordMedium = /^(((?=.*[a-z])(?=.*[A-Z]))|((?=.*[a-z])(?=.*[0-9]))|((?=.*[A-Z])(?=.*[0-9])))(?=.{6,})/

  

const isPasswordStrong = /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[^a-zA-Z0-9])(?!.*\s).{8,15}$/