chore(main): release 7.2.0

[github-actions]

🌱 A new release!

7.2.0 (2026-01-29)

The MongoDB Node.js team is pleased to announce version 7.2.0 of the bson package!

Release Notes

EJSON now supports ignoreUndefined

serialize supports an option, ignoreUndefined, which instructs the serializer to skip any keys whose values are undefined.

This option has been added to EJSON:

> EJSON.stringify({ a: undefined }, { ignoreUndefined: true });
'{}'
> EJSON.stringify({ a: undefined }, { ignoreUndefined: false });
'{"a":null}'
> EJSON.serialize({ a: undefined }, { ignoreUndefined: true });
{}
> EJSON.serialize({ a: undefined }, { ignoreUndefined: false });
{ a: null }

This option defaults to false.

Buffer.copy() now present in ByteUtils

ByteUtils now contains a copy() method, we behaves identically to Nodejs' Buffer.copy() method.

Features

• NODE-7328: Add ignoreUndefined option to EJSON APIs (#853) (5cf00c2)
• NODE-7414: add copy method to ByteUtils (#867) (ffa77c6)

Documentation

• API
• Changelog

We invite you to try the bson library immediately, and report any issues to the NODE project.

---

[baileympearson]

run release_notes

[github-actions]

🤖 Created releases:

• v7.2.0

🌻