HowProgrammingWorks - JavaScri… on Telegram: “🧩 This and much more will be covered in Pattern…”

🧩 This and much more will be covered in Patterns 2025 course

const getTomorrowDate = () => {
  const timeout = 86400000;
  return new Promise((resolve) => {
    setTimeout(() => resolve(new Date()), timeout)
  });
};

// ⚡️ Electricity over IP, as defined in RFC 3251: https://datatracker.ietf.org/doc/html/rfc3251
const socket = new WebSocket('wss://lamp.local:3251');

socket.onopen = () => {
  socket.send(JSON.stringify({ voltage: 230, frequency: 50 }));
};

socket.onmessage = (e) => {
  const { voltage, frequency } = JSON.parse(e.data);
  console.log(`⚡️ Transferred: ${voltage}V @ ${frequency}Hz`);
};

const Coin = (v) => ({ map: (f) => Coin(f(v)) });
const flip = () => crypto.getRandomValues(new Uint8Array(1))[0];
Coin(flip()).map((r) => (r & 1 ? '🪙' : '💩')).map(console.log);

const findMeaningOfLife = () => {
  const offset = 0;
  const delay = Infinity;
  return new Promise((resolve) => {
    setTimeout(() => resolve(42 + offset), delay);
  });
};

['🥚', '🥚',  '🐓', '🥚', '🥚', '🥚'].toSorted()

class Coming {
  constructor() {
    return new Promise((resolve) => 
      setTimeout(() => {
        resolve(this);
      }, DAY_OF_JUDGMENT - Date.now())
    );
  }
}

const secondComing = await new Coming();

((<F extends () => void>(Function: F = {} as F) => Function())());

class Future {
  constructor() {
    const { name: key } = this.constructor;
    const value = void [].length;
    throw new Error(`${key} is ${value}`);
  }
}

new Future();