With TypeScript 5.7 getData returns ArrayBufferLike instead of ArrayBuffer

[Scarabol]

Thank you all for this great library! I appreciate using it in my project. I just tried to update my TypeScript version from 5.6.3 to 5.7.2.

Starting with Typescript 5.7 typed arrays become generic. See:

• https://devblogs.microsoft.com/typescript/announcing-typescript-5-7/#support-for---target-es2024-and---lib-es2024
• Make typed arrays generic over ArrayBufferLike microsoft/TypeScript#59417

This affects for example the type definition of Uint8ArrayWriter

Previously with TypeScript 5.6.3 the following code typed data as ArrayBuffer, but starting with TypeScript > 5.7 data has type ArrayBufferLike.

// TypeScript < 5.7
const data: ArrayBuffer = await entry.getData(new Uint8ArrayWriter());
// TypeScript >= 5.7
const data: ArrayBufferLike = await entry.getData(new Uint8ArrayWriter());

My tsconfig compiler target is and has been set to ES2021.

I'm not sure how this is solved properly. My guess would be to add generic type explicitly to all TypedArrays usages, since they use Uint8Array (Example) actually. Effectively changing type definition here into this:

export class Uint8ArrayWriter extends Writer<Uint8Array<ArrayBuffer>> { }

What do you think?

[gildas-lormeau]

Thank for the info. Actually, I don't use TS for development and I was not aware of this issue. I wonder how to deal with that. I guess somehow I would need to publish 2 index.d.ts files?