fix: specify an explicit return type for uint8Array()

[eltigerchino]

fixes #127

An alternative to #126

By explicitly specifying the return type as Uint8Array, TypeScript won't infer the return type for us and compile it as the generic form Uint8Array<ArrayBufferLike> which is only available on TS >5.7. This allows us to maintain compatibility with libraries using TypeScript <5.7 while still returning the same type.

[benmccann]

It looks like this needs the corepack changes from #126 to pass the CI

[pi0]

there are some other methods in same class using inferred types.

I will be back at this later today + updating CI issue.

[LukeHagar]

Inferred types are not necessarily an issue, I believe just that one generic is. I can fix the CI

[pi0]

yes but inferred types can cause issues like this.

[codecov]

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #128   +/-   ##
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  Coverage        ?   76.55%           
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  Files           ?        9           
  Lines           ?      708           
  Branches        ?      146           
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  Hits            ?      542           
  Misses          ?      164           
  Partials        ?        2           

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[pi0]

Thanks! (might release with little delay to include some additional fixes + isolated types migration if possible)