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adenzhou1350andXuanwo
036f4ec53f
The namespace overloads allow `undefined` to select the root namespace,
but overload dispatch treats it as the legacy options argument and
discards the trailing options. For example, `createTable(name, data,
undefined, { mode: "overwrite" })` raises an already-exists error
instead of overwriting.
Preserve the trailing options for `createTable`, `createEmptyTable`,
`tableNames`, and `listTables` when the namespace is omitted. Legacy
options-object calls and explicit namespace arrays keep their existing
behavior.
Adds native-database regressions for overwrite, existOk, and both
listing APIs, parameterized over `undefined` and `[]`.
Validation on Windows / Node 24.19.0:
- Before the fix: all five omitted-namespace cases failed; all five
explicit-root controls passed.
- Current TypeScript source with official, integrity-verified
0.41.0-beta.0 native binaries: the entire connection test file passed,
47/47 (transpile-only).
- The same fix replayed onto the matching 0.41.0-beta.0 source:
TypeScript compilation, strict ts-jest connection tests (47/47), and
TypeDoc passed.
- Biome check/format on both changed files and diff whitespace checks
passed.
No Rust changes. A complete current-main native rebuild remains for CI:
released declarations predate the unrelated lazy-iterator APIs, so
current-main typechecking against those declarations reports six
pre-existing iterator signature errors.
Signed-off-by: Xucheng Zhou <aden1350@outlook.com>
Co-authored-by: Xuanwo <github@xuanwo.io>
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.