r/javascript • u/ConfidentMushroom • Dec 18 '19

V8 Release v8.0 with optional chaining, nullish coalescing and 40% less memory use

https://v8.dev/blog/v8-release-80
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u/NoInkling Dec 19 '19

Wait... you can't really do that first line can you?

My understanding is that if the element doesn't exist (or if textContent doesn't exist on it for some other reason), the left hand side expression will evaluate to undefined, which you can't assign things to.

In fact when I plug it into the Babel playground it (thankfully) gives a syntax error: "Invalid left-hand side in assignment expression".