Refactor code structure for improved readability and maintainability

packages/logic/src/util/convertBytesLikeToUint8Array.ts

@@ -1,17 +1,31 @@
 import type { BytesLike } from './BytesLike.js';
 
-export function convertBytesLikeToUint8Array(data: BytesLike, encodeUTF8 = true): Uint8Array {
+export function convertBytesLikeToUint8Array(
+    data: BytesLike,
+    encodeUTF8 = true
+): Uint8Array<ArrayBuffer> {
     if (data instanceof Uint8Array) {
-        return data;
+        if (
+            data.buffer instanceof ArrayBuffer
+            && data.byteOffset === 0
+            && data.byteLength === data.buffer.byteLength
+        ) {
+            return data;
+        }
+        return new Uint8Array(data) as Uint8Array<ArrayBuffer>;
     }
     if (data instanceof ArrayBuffer) {
         return new Uint8Array(data);
     }
+    if (data instanceof DataView) {
+        const view = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
+        return new Uint8Array(view) as Uint8Array<ArrayBuffer>;
+    }
     if (typeof (data) === 'string') {
         if (encodeUTF8) {
-            return (new TextEncoder()).encode(data);
+            return (new TextEncoder()).encode(data) as Uint8Array<ArrayBuffer>;
         }
-        return new Uint8Array(data.split('').map((s) => s.codePointAt(0) as number));
+        return new Uint8Array(data.split('').map((s) => s.codePointAt(0) as number)) as Uint8Array<ArrayBuffer>;
     }
-    return new Uint8Array(data.buffer);
+    throw new Error('Unsupported BytesLike');
 }