Saving the VM state is not hard at all, the feature already exists (v8 snapshot) and is used in Chrome and Node.js to initialize the JS standard library. The p

Saving the VM state is not hard at all, the feature already exists (v8 snapshot) and is used in Chrome and Node.js to initialize the JS standard library. The problem is native handles. The DOM is easy to restore, but how do you restore a WebSocket connection? An IndexedDB transaction? A `Blob`, a stream, or a WebAssembly module that JavaScript assumes to be initiated? There are solutions to each one of these, but there are still a lot of remaining pieces that are stateful and not easy to restore or gracefully close. It's possible, but it requires a lot of work.