String-Toolbox

Frequently Useful String toolbox

image-from: https://openclipart.org/detail/220229/writing-cat

Get start

npm i string-toolbox

import StringToolbox from 'string-toolbox'
console.log( StringToolbox.onlyNumbers('1hello2world3!') )
// 123

Regular Expressions

• email

  /^[0-9a-zA-Z]([-_\.]?[0-9a-zA-Z])*@[0-9a-zA-Z]([-_\.]?[0-9a-zA-Z])*\.[a-zA-Z]{1,30}$/

  console.log( StringToolbox.regex.email.test("[e-mail]") );
  // true

• username

  /^(?=.*[a-zA-Z0-9])[a-zA-Z0-9-_]{4,29}/

  console.log( StringToolbox.regex.username.test("dev-balsa-to") );
  // true

• filename

  /^(?=.*[a-zA-Z0-9])[a-zA-Z0-9-_]{4,29}/

  console.log( StringToolbox.regex.filename.test(".npmignore") );
  // true

• password

  /((?!\t\n\r).)[a-zA-Z0-9 .,/<>?;:"'`!@#$%^&*()\[\]{}_+=|\\-]{7,}/,

  console.log( StringToolbox.regex.password.test("pass-word!")  );
  // true

• strongPassword

  /(?=.*[A-Z])(?=.*[.,/<>?;:"'`!@#$%^&*()\[\]{}_+=|\\-])(?=.*[0-9])(?=.*[0-9])(?=.*[a-z])((?!\t\n\r).)[a-zA-Z0-9 .,/<>?;:"'`!@#$%^&*()\[\]{}_+=|\\-]{7,}/

  console.log( StringToolbox.regex.strongPassword.test("pass-word!")  );
  // false
  
  console.log( StringToolbox.regex.strongPassword.test("Pas5-w0rD!")  );
  // true

• numeric

  /^[-]{0,1}[\d]*[.]{0,1}[\d]+$/

  console.log( StringToolbox.regex.numeric.test("-232.1111") );
  // true

• alphabet

  /^[a-zA-Z]+$/

  console.log( StringToolbox.regex.alphabet.test("abcd") );
  // true

• number

  /^[0-9]+$/

  console.log( StringToolbox.regex.number.test("123456789") );
  // true

Functions

• isVaildEmail(email: string): boolean

  let email = "[e-mail]";
  console.log( StringToolbox.isVaildEmail(email) );
  
  // true

• isVaildUsername(username: string): boolean

  let username = "dev-balsa-to";
  console.log( StringToolbox.isVaildUsername(username) );
  
  // true

• isVaildFilename(filename: string): boolean

  let filename = ".gitignore";
  console.log( StringToolbox.isVaildFilename(filename) )
  
  // true

• isVaildPassword(password: string, useStrong: boolean = false): boolean

  StringToolbox.isVaildPassword("passwd")  // false
  StringToolbox.isVaildPassword("password") // true
  StringToolbox.isVaildPassword("password", true) // false
  StringToolbox.isVaildPassword("Pa55-w0rd!?", true) // true

• camelToSnake(src: string): string

  console.log( StringToolbox.camelToSnake("camelInNeedleEar") )
  // camel_in_needle_ear

• snakeToCamel(src: string): string

  console.log( StringToolbox.snakeToCamel("camel_in_needle_ear") )
  // camelInNeedleEar

• numberFormat(src: string | number): string

  console.log( StringToolbox.numberFormat(150000) )
  // 150,000

• onlyNumbers(src: any): string

  console.log( StringToolbox.onlyNumbers("1a2b3c4d5e6f7g8") )
  // 12345678

• onlyAlphabets(src: string): string

  console.log( StringToolbox.onlyAlphabets("1a2b3c4d5e6f7g8") )
  // abcdefg

• lpad(src: any, length: number, pad: number | bigint | string = " "): string

  console.log( StringToolbox.lpad(120, 5, "0") )
  // 00120

• rpad(src: any, length: number, pad: number | bigint | string = " "): string

  console.log( StringToolbox.rpad("pad", 5, "-") )
  // pad--

• pad(direction: "left" | "right" | "l" | "r", src: number | bigint | string, length: number, pad: number | bigint | string = " "): string

  console.log( StringToolbox.pad("left", 120, 5, "0") ); // 00120
  console.log( StringToolbox.pad("right", "pad", 5, "-") ); // pad--

• valueOf(src: any): string

  console.log( StringToolbox.valueOf(120) ); // "120"

• toNumber(src: any, removeNotNumberExpression: boolean = true): number

  console.log( StringToolbox.toNumber("120,000") ); // 120000
  console.log( StringToolbox.toNumber("-120,000abc") ); // -120000
  console.log( StringToolbox.toNumber("-120,000", false) ); // 0

• removeSpace(src: any): string

  console.log( StringToolbox.removeSpace("a b c d e f ") ); // abcdef
  console.log( StringToolbox.removeSpace("a\tb\sc\rd\ne\r\nf") ); // abcdef

• isEmpty(src: any): boolean

  console.log( StringToolbox.isEmpty(" ") ); // false
  console.log( StringToolbox.isEmpty("") ); // true
  console.log( StringToolbox.isEmpty(null) ); // true
  console.log( StringToolbox.isEmpty(undefined) ); // true

• isBlank(src: any): boolean

  console.log( StringToolbox.isBlank(" ") ); // true
  console.log( StringToolbox.isBlank("\t\s\r\n") ); // true
  console.log( StringToolbox.isBlank("a") ); // false