Use Case

As a Javascript developer
I want BSON serialization to use the best method possible for turning a string into bytes
So that I can serialize JS values quickly

User Impact

• No functional change, performance improvement

Dependencies

• BSON

Unknowns

• What is the turning point for using charCodeAt vs Buffer().write
  • Appears to be 25 characters, will attach benchmarks

Acceptance Criteria

Implementation Requirements

• Run benchmarks equivalent to the ones in NODE-5861 and determine what size string performs better in Node's Buffer API
• Using charCodeAt turn each character of a string into a byte and write it to the buffer
• If a charCode exceeds 127 fallback to Node's buffer API

Testing Requirements

• Run benchmarks on change
• Unit test

Documentation Requirements

• None

Follow Up Requirements

• Consider reusing the logic for utf8ByteLength when applicable (hot path for bulkWrite)