Use Case

As a... driver engineer
I want... to remove extraneous calls to Buffer.subarray
So that... the performance of bson and the driver will improve

User Impact

Increases performance for users

Dependencies

N/A

Unknowns

N/A

Acceptance Criteria

Implementation Requirements

• Update ByteUtils.toUTF8 in src/utils/node_byte_utils.ts to take in start and end and pass them through to the call to toString rather than calling Buffer.subarray directly inside getValidatedString.
• Update ByteUtils.UTF8 to not make a call to ByteUtils.toLocalBufferType
  • Address any typescript issues this causes

Testing Requirements

• Manually check that the performance results from making the aforementioned changes result in the expected performance increase seen in the results of the investigation for NODE-4283

Documentation Requirements

N/A

Follow Up Requirements

• Create ticket to add bson regression tests for this code path
• Create ticket to further audit ByteUtils for other opportunities for performance gains