Github publish asset_already_exists

[peteboothroyd]

Electron-builder: 19.27.7
Electron-builder-http: 19.27.5

Publishing to github fails with an asset already exists error.

I believe the problem is in the githubPublisher file, in the doUpload function. In the catch block

if (e instanceof (_electronBuilderHttp || _load_electronBuilderHttp()).HttpError) 

which evaluates to false when it seems like it should evaluate to true.
Note that for me:
e.response.statusCode = 422, e.description != null, e.description.errors != null, e.description.errors[0].code === "already_exists" and hence the nested if statement below should run.

EDIT:
Upgrading electron-publish to 19.28.1 fixes this error