Are there any alternative methods for using SharedArrayBuffer?

Question

I was attempting to implement a SharedArrayBuffer in my Express app:

function setup() {
  try {
    const a = new SharedArrayBuffer(1);
    console.info('SharedArrayBuffer is available.');
  } catch (e) {
    console.error('SharedArrayBuffer is not available.');
  }
}

However, I encountered an error: 'SharedArrayBuffer is not available.'

I have added this to my code:

const app = new Express();
app.use((req, res, next) => {
  res.setHeader('Cross-Origin-Opener-Policy', 'same-origin');
  res.setHeader('Cross-Origin-Embedder-Policy', 'require-corp');
  next();
});

I have enabled this Experimental JavaScript shared memory features while testing.

But still, I am getting the error.