Updating an item with rangeKey=0 (Number)

[SergeyAvd]

I've tried to update an item in my table. The table's HASH and RANGE keys are both numbers. In my case RANGE key was 0. I've received an error:

UnhandledPromiseRejectionWarning: ValidationException: The provided key element does not match the schema

Relevant code in table.js:

var rangeKey = data[self.schema.rangeKey] || null;

How to reproduce this issue:

1. Create a table with RANGE key as a number;
2. Run update request with range key 0:
   DynamoDBItem.update({hash: 123, range: 0}).

Note: Event.create can save items with range key being zero.

As a result I cannot update an item with rangeKey=0 using this module. I'll have to go with AWS.DynamoDB.DocumentClient.