[josevalim]

I would hope it to be long term but it is impossible to know given how fast the JS landscape can change.

But also keep in mind that Phoenix is not tied to any of these. The esbuild bits are only part of the generated app, which you can stick to or change altogether.

So when we moved to esbuild, we broke zero of the existing apps and no deprecations were emitted. The same would happen if we move away from esbuild.

As an example, I moved most of my apps to esbuild (and I have been very happy with it), but one still uses webpack because it uses the Monaco editor and we rely on certain plugins. So our approach has always been “sane defaults” but not getting in the way if you know better or prefer something else.