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// We support the GET, POST, HEAD, and OPTIONS methods from any origin,
// and allow any header on requests. These headers must be present
// on all responses to all CORS preflight requests. In practice, this means
// all responses to OPTIONS requests.
const corsHeaders = {
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Methods": "GET,HEAD,POST,OPTIONS",
  "Access-Control-Max-Age": "86400",
}

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{
  "currencies": [
    {
      "symbol": "€",
      "name": "Euro",
      "symbol_native": "€",
      "code": "EUR",
      "emoji": "🇪🇺"
    },
    {

avaleriani

export default [
    {
      "symbol": "€",
      "name": "Euro",
      "symbol_native": "€",
      "code": "EUR",
      "emoji": "🇪🇺"
    },
    {
      "symbol": "$",

avaleriani

//31.01.2000

// startDateOfContract = parameter
//customerAgeWhenContractEnd = parameter
//return end date of the contract = 1 day before the start date at the moment that the customer has the age he picked.

const calculateEndDateOfContract = (customerBirthDate, startDateOfContract, customerAgeWhenContractEnd) => {
  customerBirthDate = splitDate(customerBirthDate);
  startDateOfContract = splitDate(startDateOfContract);
  let endContractDate = new Date(customerBirthDate.year + customerAgeWhenContractEnd, startDateOfContract.month - 1, startDateOfContract.day - 1);

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//ES6
var flatten = {

 makeFlat : function(arr) {
    var res = [];
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] instanceof Array) { //if the current position is an array then we keep looking for a value.
            res.push.apply(res, this.makeFlat(arr[i])); //recursively calls makeFlat and concatenates with res.
        } else {
            res.push(arr[i]); //when is not an array, directly concatenate the value