mrharel

function detectZero(arr) {
  const map = {};
  for (var i=0; i<arr.length; i++) {
    if (arr[i] === 0) return true;
    if (map[arr[i]]) return true;
    map[arr[i] * -2] = true;
    if (find2Sum(arr.slice(i), -arr[i])) return true;
  }
  return false;
}

mrharel

const callerMap = {};

function getCaller(error) {
    if (error && error.stack) {
        const lines = error.stack.split('\n');
        if (lines.length > 2) {
            let match = lines[2].match(/at ([a-zA-Z\-_$.]+) (.*)/);
            if (match) {
                return {
                    name: match[1].replace(/^Proxy\./, ''),

mrharel

const word = "A man, a plan, a canal. Panama";

/*
 * Checks if a string is a palindrome (as explained here: https://medium.freecodecamp.org/two-ways-to-check-for-palindromes-in-javascript-64fea8191fd7
 * hard polindrome will not except string with white space. 
*/
const palindrome = (w, hard = false) => {
  const str = hard ? w : w.toLowerCase().replace(/[^a-zA-Z0-9]/g,"");
  const left = str.substring(0, Math.floor(str.length/2));

mrharel

import EXIF from "exif-js";

const DEFAULT_MAX_SIZE = 1600;
const JPEG_QUALITY = 0.9;
const FILE_READER_STATE_DONE = 2;
const JPEG_FILETYPE = "image/jpeg";
/**
 * Set up operations and degrees to rotate for each EXIF orientation (index).
 */
const ExifOrientations = [