sorry if the question is obvious - I have almost zero experience with js. The general question is how to use @google-cloud/kms in the BigQuery UDF - I suppose it's requred to pack it, so the real question is how to pack @google-cloud/kms library.

A bit of history

We use BigQuery table to store encrypted data. The data is encrypted with the custom key created in the GCP kms. We have to expose some data to the external users via the view - this solution would enables the data decryption in a flow by the UDF js function included in the view definition. There is existing KeyManagementServiceClient class from the @google-cloud/kms js library created for such purposes (simillar package exists for the Python also).

Packaging js library

I know, that the requirement for the BigQuery js function is to package and include library in the GCP bucket (an official documentation: https://cloud.google.com/bigquery/docs/reference/standard-sql/user-defined-functions#including-javascript-libraries). The question is how to pack the @google-cloud/kms library into the single js file to enable importing in the BigQuery udf function?

I have already try to find some information here, unfortunatelly without success:

• using the webpack (https://medium.com/swlh/how-to-package-a-javascript-library-for-use-in-bigquery-2bf91061f66f) - but it doesn't work straight-forward with the @google-cloud/kms library.
• node-kms Github repository (https://github.com/googleapis/nodejs-kms) - I have not found any apropriate information in the Readme nor no ready webpack building script included in the package.json scripts.