typescript: type definition for UserRecord.data says Buffer, but actual property is a string

[cbchenoweth]

Title pretty much says it all, the type definitions for the returned UserRecord are incorrect.

Here we can see they define the data property as a Buffer:
https://github.com/awslabs/kinesis-aggregation/blob/master/node/index.d.ts#L9

But in the actual code, it does not return data as a Buffer, but a base64 string:
https://github.com/awslabs/kinesis-aggregation/blob/master/node/lib/kpl-deagg.js#L97

We can see the example code showing that it is expecting a string object here:
https://github.com/awslabs/kinesis-aggregation/blob/master/node/example/sample-deaggregation.js#L141

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Not sure which is the "correct" way, but I imagine the types should just be updated to reflect the actual code. (to prevent breaking change to existing consumer code)

[stevegoossens]

This appears to have been fixed in #107