type is not assignable to o type 'ReadableStream<Uint8Array> fetch code example

Example 1: const arr = new Uint8Array(fileReader.result).subarray(0, 4);

const arr = new Uint8Array(<ArrayBuffer>fileReader.result).subarray(0, 4);

Example 2: const arr = new Uint8Array(fileReader.result).subarray(0, 4);

const arr = new Uint8Array(fileReader.result).subarray(0, 4);