empty enum got undefined after compilation

[fixiabis]

Here is a reference for usage scenarios: vitejs/vite#15958 / https://stackblitz.com/edit/vitejs-vite-abyiyv?file=main.js&terminal=dev

reproduce link:
https://esbuild.github.io/try/#dAAwLjIwLjAALS1sb2FkZXI9dHMAZXhwb3J0IGVudW0gT3Bjb2RlIHt9CgpleHBvcnQgZnVuY3Rpb24gZXh0ZW5kT3Bjb2RlKGtleTogc3RyaW5nLCB2YWx1ZTogc3RyaW5nKSB7CiAgT2JqZWN0LmFzc2lnbihPcGNvZGUsIHsgW2tleV06IHZhbHVlIH0pOwp9CgpleHRlbmRPcGNvZGUoIkEiLCAxKTs

Has there a non-hack way? (ex. add new unused enum properties)