A readable stream reader for reading from an in-memory array.
Returns a sliceable source for the specified Uint8Array. If the specified array is not a Uint8Array, it is passed to the Uint8Array constructor to create a new array; see the TypedArray constructor for details.
Returns a Promise for the next chunk of data from the underlying stream. The yielded result is an object with the following properties:
value- a Uint8Array, or undefined if the stream ended
done- a boolean which is true if the stream ended
Returns a Promise which is resolved when the underlying stream has been destroyed.