fix: equality check

Author: Gozala

src/cid.js

@@ -78,17 +78,19 @@ export class CID {
     /** @readonly */
     this.bytes = bytes
 
-    // ArrayBufferView
-    /** @readonly */
-    this.byteOffset = bytes.byteOffset
-    /** @readonly */
-    this.byteLength = bytes.byteLength
-
     // Circular reference
     /** @readonly */
     this.asCID = this
   }
 
+  get byteOffset () {
+    return this.bytes.byteOffset
+  }
+
+  get byteLength () {
+    return this.bytes.byteLength
+  }
+
   /**
    * @returns {CID<Data, API.DAG_PB, API.SHA_256, 0>}
    */
@@ -274,6 +276,10 @@ export class CID {
       throw new Error('String codecs are no longer supported')
     }
 
+    if (!(digest.bytes instanceof Uint8Array)) {
+      throw new Error('Invalid multihash digest was passed')
+    }
+
     switch (version) {
       case 0: {
         if (code !== DAG_PB_CODE) {