Allow destructuring for all target environments about esbuild HOT 1 OPEN

"Yet" is there both because at the time the issue regarding ES5 support hadn't been closed yet, and because it's something that esbuild might hypothetically still support in the future. However, I have since closed the issue about ES5 support because I have decided to not prioritize esbuild lowering things to ES5 given how widespread ES6 support is. So it's not that esbuild can't do it or that it won't, but that it's very low priority.

FWIW the reason destructuring isn't supported by your target build environment is that it includes edge16. Wikipedia has this to say about Microsoft's non-Chromium "Edge Legacy" browser (see here):

Microsoft stopped supporting Microsoft Edge Legacy on March 9, 2021.^[64][65] On April 13, 2021, Microsoft released a cumulative monthly security update which replaced Edge Legacy with the new Chromium-based Edge.^[66]

So it sounds like Microsoft is both a) not supporting this browser at all anymore, meaning it's now insecure and unsafe to use on the Internet due to lack of security updates and b) already pushed out code to actively overwrite it with their Chromium-based browser over two years ago. So one option to consider is dropping support for these really old+insecure+deprecated versions of Microsoft Edge (i.e. changing edge16 to edge18 to pick up destructuring support).

from esbuild.