Use Bytes Primitive

packages/primitives/src/block-header.ts

@@ -23,15 +23,18 @@ import { hash256 } from '@bitauth/libauth';
  * ```
  */
 export class BlockHeader {
+  protected readonly bytes: Bytes;
+
   // View of our data so that we can extract as numbers.
-  private view: DataView;
+  protected readonly view: DataView;
 
   /**
    * Creates a new BlockHeader instance.
    * @param bytes The bytes representing our Block Header (Big Endian)
    */
-  protected constructor(private readonly bytes: Uint8Array) {
-    this.view = new DataView(bytes.buffer);
+  protected constructor(bytes: Bytes | Uint8Array) {
+    this.bytes = Bytes.from(bytes);
+    this.view = new DataView(this.bytes.buffer);
   }
 
   /**
@@ -58,7 +61,7 @@ export class BlockHeader {
    * @returns A new BlockHeader instance
    * @throws Error if the byte array length is not 80
    */
-  static fromBytes(bytes: Uint8Array): BlockHeader {
+  static fromBytes(bytes: Bytes | Uint8Array): BlockHeader {
     if (bytes.length !== 80) {
       throw new Error('Invalid block header length');
     }
@@ -134,7 +137,7 @@ export class BlockHeader {
    * Serializes the block header to a byte array.
    * @returns 80-byte array containing the serialized block header
    */
-  toBytes(): Uint8Array {
+  toBytes(): Bytes {
     return this.bytes;
   }