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Could JavaScript have synchronous await?

• starmole 2y ago
  You can emulate synchronous await by using a worker thread, marshal your async operation to the main thread, then in the worker use Atomics.wait() to blocking wait on a SharedArrayBuffer variable. Once the async operation completes on main, write back the result to the SharedArrayBuffer and wake up the waiting variable. I believe that's also what emscripten uses to emulate synchronous posix calls.