arnaudrenaud

{
  "articles": [
    {
      "id": "3B8A9F8D-8E8D-43D6-BCB8-E136D3AD279D",
      "title": "A journey through internet garbage"
    },
    {
      "id": "85D4407D-496C-43BD-9B4D-93B6064B76EA",
      "title": "The Cost of Fixing Things"
    },

arnaudrenaud

const parseDate = (year, fullDate) => {
  if (!year) {
    throw new Error('arg year is missing');
  }
  if (!fullDate) {
    return new Date(year);
  }
  return new Date(fullDate);
};
module.exports = parseDate;

arnaudrenaud

Vérifiez si Postgres est installé sur votre ordinateur :

psql --version

Sinon, installez Postgres.

Lancez la console Postgres en tant que l'utilisateur postgres :

arnaudrenaud

convert *.jpg -resize 50% -set filename:f '%t' smaller/'%[filename:f].jpg'

arnaudrenaud

Prepare your web service for production

With examples for Node.js services managed with Docker Compose:

• Make sure you can start each service in non-watch production mode (npm run build followed by npm run start instead of npm run dev)
• Use environment variables to disable API introspection and debug-level logging (NODE_ENV=production)
• If services are containerized, expose them to each other on an internal network, leaving only one gateway exposed to the host (in docker-compose.prod.yml, use expose for internal services and ports only for the gateway)
• Run host-exposed services on a variable port to avoid conflict with other services that may run on the server (if your services are containerized, only the gateway needs a variable port: GATEWAY_PORT=8000)
• Run the app in background mode to avoid keeping the shell busy (docker compose -f docker-compose.prod.yml up --build --detach)
• Mark services with restart: always so that Docker will restart them automatically (after a reboot

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Set up UFW firewall on a Linux web server

For reference: https://www.webservertalk.com/ubuntu-firewall-how-to-configure-ufw/.

Run the following:

sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow 22 # ⚠️ Replace by your actual SSH port (22 by default) — otherwise, SSH access will be lost after reboot!

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Deploy a web service on a Linux server

Before deploying your app, make sure it is ready for production (cheatsheet here).

With example commands for Ubuntu:

Make server secure

• Provision a Linux server (for example, a virtual private server from DigitalOcean or OVH)
• Log in with SSH as default user: ssh ubuntu@<hostname>

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const { readFileSync, writeFileSync } = require("fs");

function getFormattedTime(timeMilliseconds) {
  return new Date(timeMilliseconds).toISOString().substring(11, 23);
}

const REPLACEMENT_PROBABILITY = 0.01;
const REPLACEMENT_CHARACTERS = "✴⦧⦖";
function getRandomlyReplacedText(text) {
  if (REPLACEMENT_PROBABILITY === 0) {

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const { performance } = require("perf_hooks");

const start1 = performance.now();
JSON.stringify({ emailAddress: "arnaud.renaud@gmail.com" });
const end1 = performance.now();
console.log(
  `Time taken to execute JSON.stringify function is ${end1 - start1}ms.`
);

const start2 = performance.now();

arnaudrenaud

Codewars

Niveau 1 :

List Filtering: https://www.codewars.com/kata/53dbd5315a3c69eed20002dd/train/javascript

Array.diff: https://www.codewars.com/kata/523f5d21c841566fde000009/train/javascript

Simple Pig Latin: https://www.codewars.com/kata/520b9d2ad5c005041100000f/train/javascript