fix(core): update

ts/index.ts

@@ -28,7 +28,7 @@ export function isBufferLike(obj: any): obj is ArrayBufferLike | Buffer {
   return false;
 }
 
-export function convertBufferToPureUint8Array(bufferArg: Buffer) {
+export function ensurePureUint8Array(bufferArg: Uint8Array | Buffer): Uint8Array {
   // Create a new Uint8Array with the same length as the buffer
   const uint8Array: Uint8Array = new Uint8Array(bufferArg.length);