Error "Cannot read properties of undefined (reading 'split')"

[D027152]

Hello colleagues

We upgrade to"@sap/cds": "8.x.x" from "@sap/cds": "7.x.x", and face the following problem.

We have an entity that has a property that is typed as DateTime or Timestamp (in the cds model).
We insert a instance into the entity with INSERT.into ...
In javascript / typescript, the property is of type Date (not: string).

Before the upgrade this worked.
After the upgrade we get in node_modules/@cap-js/change-tracking/lib/change-log.js:177:44 the error
"Cannot read properties of undefined (reading 'split')" See also the screenshot from my local environment:

When we instead do the INSERT statement with the property being a string instead of Date, we don't get this error.

The CAP runtime seems to accept the type Date. Therefore, our expectation is that also change tracking should accept Date.

To reconstruct:

• repo https://github.tools.sap/erp4sme/crypto-for-business
• branch new_cds
• npm ci
• run unit test "01. Add an entry to the BusinessPartners entity -> this should be selected properly" in file lib/masterData/businessPartners/DbBusinessPartnerRepository.ts; this results in the above-mentioned error

Can you please check and advise.

Thank you and best regards,
Stefan

We use CAP with NodeJs.