dfareporting fails with "ctr is not a constructor"

dfareporting v3.4 was sunset the a couple weeks ago and migrating to 3.5 hasn't been going smoothly.

doing this -

const { google } = require("googleapis");

this.dfareporting = google.dfareporting({
version: "v3.5",
auth: this.auth,
})

results in -
`Error: Unable to load endpoint dfareporting("v3.5"): ctr is not a constructor
at Object.getAPI (\node_modules\googleapis-common\build\src\apiIndex.js:36:15)
at GoogleApis.dfareporting (\node_modules\googleapis\build\src\apis\dfareporting\index.js:24:32)`

and when I try to revert to 3.4 -

this.dfareporting = google.dfareporting({
version: "v3.4",
auth: this.auth,
})

results in -

403 DCM Service Error: 3140 : Version v3.4 of the DCM/DFA Trafficking and Reporting API is no longer supported. Please upgrade
to the latest version of the API.

So I'm not sure what to do, and also running `$ npm install @googleapis/dfareporting` doesn't update node_modules with v3.5.