refactor: used optional chaining instead of expression in generator.js

[rishabhr4]

used optional chaining instead of expression
this is the issue

[changeset-bot]

⚠️ No Changeset found

Latest commit: f00616c

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[derberg]

/rtm