Compatibility with TypeScript 5.7 (array buffers)

[ehoogeveen-medweb]

Disclaimer: TypeScript 5.7 was only just released and I'm not trying to rush you.

TypeScript 5.7 includes some changes to how array buffers are typed, and it appears that better-typescript-lib will need to be updated to be compatible with it.

With TypeScript 5.7.2 and better-typescript-lib 2.9.0 and compiling the following file:

import * as zlib from 'node:zlib'

const result = zlib.gzipSync("test");

console.log(result.byteLength);

I get this error:

src/test.ts:5:20 - error TS2339: Property 'byteLength' does not exist on type 'Buffer<ArrayBufferLike>'.

Without better-typescript-lib there's no error.

reproduction repository

[uhyo]

Yes, I need to work on TS 5.7 support. Thank you for a reminder 🙂

Installing better-typescript-lib 2.9.0 essentially keeps you on TS 5.6's type definitions despite actually using TS 5.7.

I believe @types/node now utilizes typesVersions to provide different definitions for TS <= 5.6 and 5.7, which is problematic in this case.

Sorry for inconvenience until I release a new version. 🙇

[uhyo]

@ehoogeveen-medweb I just released a new version of better-typescript-lib which should be TS 5.7 compatible. Please try 🙂

[ehoogeveen-medweb]

Everything is working with 2.10.0 and TS 5.7, thanks!