Typescript build errors

Description

We have a Typescript project, built using Webpack + ts-loader. In the client SPA, I've imported Typesense the traditional way import * as Typesense from 'typesense' which seems to work well (typings come through). The code builds and runs fine, but at build time I'm getting the following errors, so our CI/CD pipeline stops :(

ERROR in /app/node_modules/typesense/lib/Typesense/Documents.d.ts
2:12-13
[tsl] ERROR in /app/node_modules/typesense/lib/Typesense/Documents.d.ts(2,13)
      TS1005: '=' expected.
ts-loader-default_3ef1a0ebb55d0532

ERROR in /app/node_modules/typesense/lib/Typesense/Documents.d.ts
2:32-36
[tsl] ERROR in /app/node_modules/typesense/lib/Typesense/Documents.d.ts(2,33)
      TS1005: ';' expected.
ts-loader-default_3ef1a0ebb55d0532

Expected Behavior

Should transpile without errors. Is there a different way I should be importing the browser client?

Metadata

Typsense Version:
"typesense": "^1.1.2"
"@babel/runtime": "^7.16.7" <-- we aren't running Babel, is it needed?

OS:
OSX BigSur 11.6

Start by reproducing the Webpack build with ts-loader and inspect node_modules/typesense/lib/Typesense/Documents.d.ts, especially the reported line 2 syntax errors. Compare the client import and the listed Typesense and @babel/runtime versions; done means the client transpiles without TS1005 errors in the CI/CD build.