javierd79

import { useState, useEffect } from 'react';
import moment from 'moment';

type TimerHook = {
  time: string;
  stop: () => void;
};

const useTimer = (endTime: string): TimerHook => {
  const duration = moment.duration(moment(endTime, 'HH:mm:ss').diff(moment(moment().format('HH:mm:ss'), 'HH:mm:ss')));

javierd79

interface Array<T> {
  has(key: string, value: any): [keyof T, any] | []
}

Array.prototype.has = function(key, value) {
  return this.filter((item) => item[key] === value)
}

javierd79

interface Date {
  setDays(days: number): Date
}

Date.prototype.setDays = function(days: number) {
  const date = new Date(this.valueOf())
  date.setDate(date.getDate() + days)
  return date
}

javierd79

/* REGEXes */
const REGEX_INT = /^-?\d+$/;

const REGEX_EMAIL = /[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/g;

const REGEX_PASSWORD = /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[a-zA-Z]).{8,}$/gm;

const REGEX_IPv4 = /\b(?:(?:2(?:[0-4][0-9]|5[0-5])|[0-1]?[0-9]?[0-9])\.){3}(?:(?:2([0-4][0-9]|5[0-5])|[0-1]?[0-9]?[0-9]))\b/ig;

const REGEX_IPv6 = /(([a-fA-F0-9]{1,4}|):){1,7}([a-fA-F0-9]{1,4}|:)/gm;

javierd79

const permissions = {
  Admin: ['/', '/users'],
  undefined: ['/login'],
  null: ['/login'],
};

const initialState = {
  status: false,
};

javierd79

function concatArrays (firstArr, secondArr) {
  return [...firstArr, ...secondArr]
}

concatArrays ([1,2,3], ["Hello world!", "Mondongo"])

// [ 1, 2, 3, 'Hello world!', 'Mondongo' ]

javierd79

const countDuplicate = (array) => {
 	let object = array.reduce((prev, cur) => ((prev[cur] = prev[cur] + 1 || 1), prev), {})
	console.log(object);
}

countDuplicate(['test', 'test', 'test2'])

javierd79

let result = []

const REGEX_INT = /^-?\d+$/;

const isNumber = (value) => {
  return REGEX_INT.test(value);
}

const fakeBinary = (param) => {
  if (isNumber(param)){

javierd79

export const everyWeek = (x) => {
  let prev = new Date();
    prev.setDate(prev.getDate() + (x+(7+prev.getDay())) % 7); 
      return prev
        .toISOString()
        .slice(0, 10)
        .replace('T',' ');
}