What settings are required to get Mobx decorators working?

[charliematters]

Hello,

I'm trying to get our existing Mobx-enabled codebase, but I can't get the decorators working in our domain objects.

I've made a repo with a simple example of how our current domain objects work, and a simple test case which currently fails when using swc-jest but passes with ts-jest.

I'd love to get the speed of swc, but currently running Object.keys(this) in the class constructor doesn't return any of the decorated fields. I've tried switching all the decorator configuration options, but none of them get test passes

https://github.com/charliematters/swc-issue/blob/main/.swcrc