submitAnalytics causing ReferenceError: trying to import a file after the Jest environment has been torn down

[justindi15]

While running jest unit tests on both v10.2.0 and v6.1.6 I am getting the error:

ReferenceError: You are trying to import a file after the Jest environment has been torn down

I have looked through the version diffs for these releases and what is causing the error and have narrowed it down the the new analytics changes. Specifically, in lib/submit-analytics.js

Removing the 100ms timeout promise delay solves the issue. I'm wondering what was the reason for adding this?

Goals

Run jest unit tests with realm.

Expected Results

Jest unit tests to run as normally on v10.1.4 and below and v6.1.5 and below.

Actual Results

Version of Realm and Tooling

• Realm JS SDK Version: v10.2.0 and v6.1.6
• Node or React Native: React Native
• Client OS & Version: RN 0.62
• Which debugger for React Native: None

[justindi15]

Seems like a regression from #3524

[fronck]

@justindi15 Thanks for reporting this. I think you're right about the regression report, and we'll look into the issue.
To answer your question, the 100ms timeout is there to allow for an opt-out by setting the REALM_DISABLE_ANALYTICS env variable.

[kneth]

@justindi15 A fix has been released in v10.3.0-rc.1.