`esnext` target doesn't transform using declarations but `es2022` does about esbuild HOT 2 CLOSED

You are misunderstanding the docs. This behavior is intended. Passing esnext means "preserve all upcoming JavaScript features without transformation" which is what esbuild is doing. This is also what other JavaScript transformers do, such as the TypeScript compiler (compare your code with ES2022 vs. with ESNext).

Another way to think about it is that esnext means "I'm running my code in an environment that supports all upcoming JavaScript features, so no transformations are needed" whereas es2022 means "I'm running my code in an environment that only supports JavaScript features up to the 2022 specification, so transform features newer than that".

according to the target docs, using esnext as target should correctly transform the using keyword.

The documentation you linked to is saying the opposite:

"Transformed when --target is below" means that using is not transformed when the target is equal to esnext, only when it is below esnext. The target order is es6, es2016, es2017, es2018, ... esnext (you can think of "next" like "infinity" if that helps). So "below" means anything that comes before esnext in that order.

from esbuild.

Alright, my bad.

Thank you for explaining and for the patience.

I'll close the issue.

from esbuild.