MaikelVeen

var count int

func GetPdfUrl(ctx context.Context) (string, error) {
	count++

	if count <= 3 {
		return "", errors.New("boom")
	} else {
		return "https://linktopdf.com", nil
	}

MaikelVeen

type Effector func(context.Context) (string, error)

func Retry(effector Effector, retries int, delay time.Duration) Effector {
	return func(ctx context.Context) (string, error) {
		for r := 0; ; r++ {
			response, err := effector(ctx)
			if err == nil || r >= retries {
				// Return when there is no error or the maximum amount
				// of retries is reached.
				return response, err

MaikelVeen

// squares returns a function that returns
// the next square number each time it is called.
func squares() func() int {
  var x int
  return func() int {
    x++
    return x * x
  }
}

MaikelVeen

const GetUrlElement = ({ host, route, date }: Url): string => {
  if (date) {
    return `<url><loc>${host}${route}</loc><lastmod>${date}</lastmod></url>`;
  } else return `<url><loc>${host}${route}</loc></url>`;
};

const GetSitemapXml = (urls: Array<Url>): string => `<?xml version="1.0" encoding="UTF-8"?>
    <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    ${urls.map((url) => GetUrlElement(url)).join('')}
    </urlset>`;

MaikelVeen

import { GetServerSideProps } from 'next';
import fs from 'fs';
import path from 'path';

// This functions returns a domain based on the NODE_ENV setting
import { GetCurrentDomain } from '../utils/UrlBuilder';

export default function Sitemap() {}

type Url = {

MaikelVeen

<nav class="c-breadcrumb">
  <ol itemscope="" itemtype="https://schema.org/BreadcrumbList" class="breadcrumb__list">
    <li itemprop="itemListElement" itemscope="" itemtype="https://schema.org/ListItem" class="breadcrumb-element">
      <a itemprop="item" href="https://example.com/" class="breadcrumb-element__link"
        ><span itemprop="name" class="breadcrumb-element__name">Home</span></a
      ><meta itemprop="position" content="1" />
    </li>
    <span class="breadcrumb-element__divider">&gt;</span>
    <li itemprop="itemListElement" itemscope="" itemtype="https://schema.org/ListItem" class="breadcrumb-element">
      <a itemprop="item" href="https://example.com/bikes" class="breadcrumb-element__link"

MaikelVeen

<Breadcrumb breadcrumbItems={breadcrumb} />

/// Data passed could be something like:

const breadcrumb = [
  {url:'https://example.com/', name:"Home"},
  {url:'https://example.com/bikes', name:"Bikes"}, 
  {url:'https://example.com/bikes/bike-x', name:"Bike-X"}];

MaikelVeen

function BreadcrumbItem({ url, name, index, isLast }:
  { url: string, name: string, index: number, isLast: boolean }) {
  return (
    <React.Fragment>
      <li itemProp="itemListElement" itemScope
        itemType="https://schema.org/ListItem" key={index} className="breadcrumb-element">
        <a itemProp="item" href={url} className="breadcrumb-element__link">
          <span itemProp="name" className="breadcrumb-element__name">{name}</span></a>
        <meta itemProp="position" content={index.toString()} />
      </li>

MaikelVeen

export function Breadcrumb({ breadcrumbItems }: BreadcrumbProps) {
  return (
    <nav className="c-breadcrumb">
      <ol itemScope itemType="https://schema.org/BreadcrumbList" className="breadcrumb__list">
        {breadcrumbItems.map((item, index, array) =>
          <BreadcrumbItem {...item} index={index + 1} isLast={array.length - 1 === index} key={index} />
      </ol>
    </nav>
  )
}

MaikelVeen

interface BreadcrumbProps {
  breadcrumbItems: Array<BreadcrumbItemProps>;
}

interface BreadcrumbItemProps {
  url: string
  name: string
}