Sourced from bson's releases.

v6.10.0

6.10.0 (2024-11-18)

The MongoDB Node.js team is pleased to announce version 6.10.0 of the bson package!

Release Notes

BSON Binary Vector Support!

The Binary class has new helpers to assist with using the newly minted Vector sub_type of Binary sub_type == 9 🎉! For more on how these types can be used with MongoDB take a look at How to Ingest Quantized Vectors!

Here's a summary of the API:

class Binary {
  toInt8Array(): Int8Array;
  toFloat32Array(): Float32Array;
  toPackedBits(): Uint8Array;
static fromInt8Array(array: Int8Array): Binary;
static fromFloat32Array(array: Float32Array): Binary;
static fromPackedBits(array: Uint8Array, padding: number = 0): Binary;
}

Relatively self-explanatory: each one supports converting to and constructing from a native Javascript data type that corresponds to one of the three vector types: Int8, Float32, PackedBit.

Vector Bytes Format

When a Binary is sub_type 9 the first two bytes are set to important metadata about the vector.

• binary.buffer[0] - The datatype that indicates what the following bytes are.
• binary.buffer[1] - The padding amount, a value 0-7 that indicates how many bits to ignore in a PackedBit vector.

Packed Bits 📦

static fromPackedBits(array: Uint8Array, padding: number = 0)

When handling packed bits, the last byte may not be entirely used. For example, a PackedBit vector = [0xFF, 0xF0] with padding = 4 ignores those last four 0s making the bit vector logically equal to 12 ones.

    F    F    F    0
[1111 1111 1111]   // ignored: the four 0s are padding

[!IMPORTANT] When using the fromPackedBits method to set your padding amount to avoid inadvertently extending your bit vector.

Unpacking Bits 🧳

... (truncated)

Sourced from bson's changelog.

6.10.0 (2024-11-18)

Features

• NODE-6537: add support for binary vectors (#730) (d7bdcec)

Bug Fixes

• NODE-6536: Binary.read never returns number[] and reads beyond content (#727) (f99fdfd)

6.9.0 (2024-10-15)

Features

• NODE-6031: add t and i to Timestamp (#704) (b766d0f)

Performance Improvements

• NODE-6344: improve ObjectId.isValid(string) performance (#708) (064ba91)
• NODE-6356: Improve serialization performance (#709) (61537f5)

6.8.0 (2024-06-27)

Features

• NODE-6156: add signature to github releases (#692) (f0fbe91)

Performance Improvements

• NODE-6126: improve Long.fromBigInt performance (#681) (63eafcb)

6.7.0 (2024-05-01)

Features

• NODE-5648: add Long.fromStringStrict() (#675) (9d5a5df)
• NODE-6086: add Double.fromString() method (#671) (e943cdb)
• NODE-6087: add Int32.fromString method (#670) (5a21889)

Bug Fixes

• NODE-6102: Double.fromString prohibiting '+' character and prohibiting exponential notation (#674) (c58d1e2)

... (truncated)

• 2e86183 chore(main): release 6.10.0 [skip-ci] (#731)
• d7bdcec feat(NODE-6537): add support for binary vectors (#730)
• f6e86bb test(NODE-6534): add spec test runner for Binary vector (#729)
• f99fdfd fix(NODE-6536): Binary.read never returns number[] and reads beyond content (...
• 887849d chore(NODE-6018): run entire BSON suite on a big endian machine (#726)
• eba09e7 docs: TOC fix in upgrade-to-v5.md
• 1508112 chore: update migration guide TLA (#728)
• d37f52e chore(deps-dev): bump the development-dependencies group across 1 directory w...
• 5dbff3f chore(deps-dev): bump rollup from 4.20.0 to 4.24.4 (#724)
• c3bbd32 chore(deps-dev): bump braces from 3.0.2 to 3.0.3 in /etc/eslint/no-bigint-usa...
• Additional commits viewable in compare view

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