Ownership and Resource Lifetime

Pure JavaScript examples of deterministic resource lifetime, ownership, move, borrow, lease, shared ownership, weak references, and RAII-inspired abstractions built on modern JavaScript.

const timers = require('node:timers/promises');

class AbortScope {
  #controller = new AbortController();
  signal = this.#controller.signal;
  [Symbol.dispose]() {
    this.#controller.abort(new Error('Scope disposed'));
  }
}

const main = async () => {
  let operation;
  {
    using scope = new AbortScope();
    operation = timers.setTimeout(1000, 'done', {
      signal: scope.signal,
    });
  }
  try {
    await operation;
  } catch (error) {
    console.log(error.name);
  }
};

main();

Sources: https://github.com/HowProgrammingWorks/Ownership