evalCode async code problem

[NasaRocket]

const execute = async () => { try { const res = await someAsyncOperation(); console.log(res) } catch (e) { console.log(e) } }; execute(); i write this code to run (use arena.evalCode), but never return any res, if i should do something more? I have expose someAsyncOperation

[rot1024]

Calling arena.executePendingJobs() is required to run pending jobs.

    const ctx = (await getQuickJS()).newContext();
    const arena = new Arena(ctx, { isMarshalable: true });

    arena.expose({
      console: {
        log: console.log,
      },
    });

    arena.evalCode(`
      const someAsyncOperation = async () => "hello";
      const execute = async () => {
        try {
          const res = await someAsyncOperation();
          console.log(res);
        } catch (e) {
          console.log(e);
        }
      };
      execute();
    `);

    arena.executePendingJobs();

    arena.dispose();
    ctx.dispose();

[NasaRocket]

Thanks you answer, but it doesn't work in my project. my project like this.

const ctx = (await getQuickJS()).newContext();
const arena = new Arena(ctx, { isMarshalable: true });
function someAsyncOperation() {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve('hello');
    }, 1000);
  });
}

arena.expose({
  console: {
    log: console.log,
  },
  setTimeout: (fn: () => void, time: number) => {
    setTimeout(fn, time)
  },
  someAsyncOperation,
});

arena.evalCode(`
      const execute = async () => {
        try {
          const res = await someAsyncOperation();
          // break in here, can't continue execute
          console.log(res);
        } catch (e) {
          console.log(e);
        }
      };
      execute();
 `);

arena.executePendingJobs();

arena.dispose();
ctx.dispose();

[rot1024]

Must call excecutePendingJobs repeatedly. You need to implement the event loop on your own. For more information, please study the JavaScript working principle.

Also, this question has little to do with the functionality of quickjs-emscripten-sync itself, so please contact the quickjs-emscripten issue for more information.

[NasaRocket]

Thank you answer 🌟