typescript error in the build process

[mackovershay]

After I updated the optimizley-sdk to version 4.4.0 my build process started to fail
I am using typescript(4.0.5) and I started to get the following errors after the upgrade:
node_modules/@optimizely/optimizely-sdk/lib/optimizely/index.ts:150:11 - error TS2322: Type 'UserProfileService' is not assignable to type 'null'.

150 userProfileService = config.userProfileService;
~~~~~~~~~~~~~~~~~~

node_modules/@optimizely/optimizely-sdk/lib/optimizely/index.ts:335:7 - error TS2322: Type 'string' is not assignable to type 'null'.

335 variationId = projectConfig.getVariationIdFromExperimentAndVariationKey(configObj, experimentKey, variationKey);
~~~~~~~~~~~

node_modules/@optimizely/optimizely-sdk/lib/optimizely/index.ts:336:7 - error TS2322: Type 'string' is not assignable to type 'null'.

336 experimentId = projectConfig.getExperimentId(configObj, experimentKey);
~~~~~~~~~~~~
I have downgraded the SDK to version 4.3.4 and everything works as expected.

@optimizely/optimizely-sdk version: 4.4.0

node version: 12.17

npm version: 6.14.4

[chris-armstrong]

I can confirm I'm seeing this as well. The odd part is that the SDK is packaged with .d.ts files for the compiled JS, so it's not clear why its being installed with the source .ts files (in my understanding, these should be eliminated via a .npmignore file).

[gitrkaplan]

I'm using SDK version 4.2.1 and am also seeing this issue.

[gitrkaplan]

@mackovershay Until the issue has been resolved on Optimizely's end, using 4.1.0 resolved my issue.

[yavorona]

Thanks @mackovershay @chris-armstrong @gitrkaplan for reporting this issue. We merged #611 and released it in v4.4.1