decision(firestore-send-email): kit/extension parity – blank required params fail the kit deploy, the extension uses defaults #3324

firestore-send-email kit/extension parity. Priority: low. A config that works on the extension fails to deploy as a kit.

Difference

• Extension: a blank required param falls back to its declared default.
• Kit: assertRequiredParams() stops the deploy with Required parameters are set to an empty value: … when DATABASE, AUTH_TYPE, MAIL_COLLECTION, DEFAULT_FROM, TTL_EXPIRE_TYPE or TTL_EXPIRE_VALUE is blank in .env. DATABASE_REGION is left out on purpose: a blank value leaves the function without a region, so the CLI picks one.

Reproduced

Seen in the code, not tested live on this kit. DEFAULT_FROM has no declared default.

Code

• Extension: required params at extension.yaml#L72, #L198, #L304, #L315, #L356, #L380.
• Kit: config.ts#L397-L435, called at index.ts#L35.

Resolution

Keep the stricter check, and mark which settings can't be blank in the README, as the firestore-bigquery-export kit README does (#3319).