Intent to ship: Atomics and SharedArrayBuffer objects (limited to a single thread)

Hi, Planned for Firefox 78. Summary: This is a small but important step in returning shared memory support to the web. The postMessage() API throws and will continue to throw when given a SharedArrayBuffer object so this specific change does not give developers shared memory, but it does return

Re: Leakage of amount of storage used

> If this is the problem that was described in > https://github.com/whatwg/storage/issues/31 > > > Yes, we are trying to solve this problem right now. There is a bug, Bug > 1290481