statemanager: Fix statemanager Browser Example (#3197)

* Use hexToBytes instead of hexStringToBytes

* Make debug check safe for browsers

---------

Co-authored-by: Holger Drewes <[email protected]>
Co-authored-by: acolytec3 <[email protected]>

Author: 3 people

packages/statemanager/examples/browser.html

@@ -10,7 +10,7 @@
 
         const run = async () => {
             const stateManager = new DefaultStateManager()
-            const address = new Address(hexStringToBytes('a94f5374fce5edbc8e2a8697c15331677e6ebf0b'))
+            const address = new Address(hexToBytes('0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b'))
             const account = new Account(BigInt(0), BigInt(1000))
             await stateManager.checkpoint()
             await stateManager.putAccount(address, account)

packages/trie/src/trie.ts

@@ -102,7 +102,8 @@ export class Trie {
       valueEncoding = ValueEncoding.Bytes
     }
 
-    this.DEBUG = process.env.DEBUG?.includes('ethjs') === true
+    this.DEBUG =
+      typeof window === 'undefined' ? process?.env?.DEBUG?.includes('ethjs') ?? false : false
     this.debug = this.DEBUG
       ? (message: string, namespaces: string[] = []) => {
           let log = this._debug