Files
lancedb/nodejs
lancedb-gatefixer[bot] ad79112b8e fix(node): support LargeUtf8 and LargeBinary Arrow columns (#4287)
## Cause

The Arrow type sanitizer handled Utf8 and Binary but omitted LargeUtf8
and LargeBinary, so Arrow tables from another Arrow installation failed
schema sanitization before reaching LanceDB.

## Fix

Reconstruct both large Arrow types during sanitization. Regression tests
cover createTable and add with Arrow 15–18 and adding a LargeBinary
Arrow column to a blob table.

## Validation

- Confirmed the new table test failed before the fix with `Unrecognized
type id in schema: 20` on all four Arrow versions.
- The table, sanitizer, and Arrow Jest suites passed: 604 tests.
- `pnpm lint`, `pnpm build`, and `pnpm run docs` passed.

Fixes #4266

<!-- lance-gatekeeper-fix:v1 agent=1090de3c0ddeca587956632b79f0193c
generation=1 -->

Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
2026-09-29 12:25:12 -05:00
..
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.