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Yang Cen
9ba1920e0e
Passing a record batch created by an ESM `apache-arrow` import to `RRFReranker.rerankHybrid` throws an IPC footer parse error. The SDK's CommonJS Arrow writer receives data types from another module instance. Normalize single-record-batch input with the existing table sanitizer before writing IPC. Extend the Arrow 15–21 round-trip test with caller-created batches and nulls, and add a native ESM reranker regression covering 64-bit row IDs, scores, and an empty FTS side. Validation: - Reproduced with published `0.42.0-beta.3`; CommonJS and explicitly normalized ESM controls pass. - Same native module and inputs: all 8 targeted cases fail with the parent serializer and pass with this change. - Local native build, TypeScript build, lint, and formatting pass. - Current-head CI passes on Linux Node 22/24/26, macOS, and Arrow 19/20. The macOS run passes 1,643 tests; Linux Node 24 also passes docs and example checks.
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.