Excel Add-In: API Set 1.16 Not Available When Using Local Office.js Version

I'm developing an Excel Add-In using the npm version of the JavaScript API and I'm encountering an issue with the latest Excel API set (1.16) functionality.

I’m trying to access the valueAsJson property from a RangeObject, which is part of Excel API 1.16. However, it seems that the required features from API set 1.16 are missing from my project, although I have followed every step required in the documentation.

• Installed the latest version of @microsoft/office-js (v1.1.93).
• Added the script reference in my HTML file like this:
  <script src="/assets/office-js/office.js"></script>
• Most of the functionality works, but anything related to Excel API set 1.16 (like valueAsJson) is not available and can also not be found in the correpsonding office.d.ts file.
• When switching to the CDN version of Office.js, everything works as expected, but we need the add-in to work offline, so using the CDN is not an option.

Does anyone know why this is happening or how it can be fixed?

Any help would be greatly appreciated!