https://github.com/MyPureCloud/platform-client-sdk-javascript
As of v137.0.0.0 it seems the typings are broken (many duplicate definitions):
../../node_modules/purecloud-platform-client-v2/index.d.ts(71,15): error TS2300: Duplicate identifier 'AlertingApi'.
../../node_modules/purecloud-platform-client-v2/index.d.ts(85,19): error TS2300: Duplicate identifier 'AlertingApi'.
../../node_modules/purecloud-platform-client-v2/index.d.ts(109,15): error TS2300: Duplicate identifier 'AnalyticsApi'.
../../node_modules/purecloud-platform-client-v2/index.d.ts(158,19): error TS2300: Duplicate identifier 'AnalyticsApi'.
etc....
see https://raw.githubusercontent.com/MyPureCloud/platform-client-sdk-javascript/master/build/index.d.ts