ecmascript_2024

const record = #{ name: "Alice", age: 30 };
const tuple = #[1, 2, 3];

console.log(record.name); // Alice
console.log(tuple[0]); // 1


const data = { type: 'user', info: { name: 'Alice', age: 30 } };

const result = match (data) {
  { type: 'user', info: { name } } => `User: ${name}`,
  { type: 'admin', info: { name } } => `Admin: ${name}`,
  _ => 'Unknown'
};

console.log(result); // User: Alice


const now = Temporal.Now.plainDateTimeISO();
const future = now.add({ days: 5 });

console.log(now.toString()); // 2024-08-03T14:32:00
console.log(future.toString()); // 2024-08-08T14:32:00


const result = [1, 2, 3, 4]
  |> map(x => x * 2)
  |> filter(x => x > 4)
  |> reduce((sum, x) => sum + x, 0);

console.log(result); // 14


import { AsyncLocalStorage } from 'node:async_hooks';

const asyncLocalStorage = new AsyncLocalStorage();

asyncLocalStorage.run(new Map(), () => {
  asyncLocalStorage.getStore().set('key', 'value');

  setTimeout(() => {
    console.log(asyncLocalStorage.getStore().get('key')); // Preserves context
  }, 100);
});


import { featureA } from './moduleA' if (condition);
import * as featureB from './moduleB';

if (condition) {
  const { featureC } = await import('./moduleC');
  featureC();
}