Files
lancedb/nodejs
lancedb-gatefixer[bot] 03b52e5877 test(node): cover fixed-size list schemas with typed arrays (#3866)
## Summary

- cover explicit FixedSizeList schemas populated from Float32Array
values
- verify the original vector.0 failure stays fixed across Arrow 15, 16,
17, and 18

## Root cause and fix

In v0.16, schema subset inference treated typed-array vectors as nested
objects and looked up numeric paths such as vector.0, which do not exist
in a FixedSizeList schema. Current typed-array handling correctly
recognizes ArrayBuffer views as vector values instead of traversing
their elements. This change adds the missing regression coverage for the
reported explicit-schema path so that behavior cannot regress unnoticed.

## Validation

- pnpm test __test__/arrow.test.ts --runInBand
- pnpm lint
- pnpm build
- pnpm run docs
- pnpm test --runInBand (681 passed, 5 skipped)

Fixes #2134

<!-- lance-gatekeeper-fix:v1 agent=1d548cb70f6df110ce0a5b119395b52a
generation=1 -->

Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
2026-08-06 16:43:59 +08:00
..
2025-03-21 10:56:29 -07:00
2025-01-29 08:27:07 -08:00

LanceDB JavaScript SDK

A JavaScript library for LanceDB.

Installation

npm install @lancedb/lancedb

This will download the appropriate native library for your platform. We currently support:

  • Linux (x86_64 and aarch64 on glibc and musl)
  • MacOS (Intel and ARM/M1/M2)
  • Windows (x86_64 and aarch64)

Usage

Basic Example

import * as lancedb from "@lancedb/lancedb";
const db = await lancedb.connect("data/sample-lancedb");
const table = await db.createTable("my_table", [
  { id: 1, vector: [0.1, 1.0], item: "foo", price: 10.0 },
  { id: 2, vector: [3.9, 0.5], item: "bar", price: 20.0 },
]);
const results = await table.vectorSearch([0.1, 0.3]).limit(20).toArray();
console.log(results);

The quickstart contains more complete examples.

Development

See CONTRIBUTING.md for information on how to contribute to LanceDB.