JSDoc typeof fix

Author: patrickwoodhead

src/traverse.js

@@ -1,7 +1,14 @@
-import { CID } from './index.js'
-import { Block } from './block.js'
 import { base58btc } from 'multiformats/bases/base58'
 
+/**
+ * @typedef {import('./cid.js').CID} CID
+ */
+
+/**
+ * @template T
+ * @typedef {import('./block.js').Block<T>} Block
+ */
+
 /**
  * @template T
  * @param {Object} options