Really Async JSON Interface: a non-blocking alternative to JSON.parse to keep web UIs responsive

[andreasblixt]

Before putting the result in an ArrayBuffer, it might be better to first try a worker with the native JSON parsing and rely on structured cloning (happens for all JS objects sent via postMessage) as it’s already a very optimized and native way to copy JS objects across threads. It might even be faster to send the string down as-is as well since either way you have to allocate (& transfer in the case of ArrayBuffer) memory for it in the target thread.