feat(helia): helia-ipns

[whizzzkid]

In this PR:

• Replacing delegated routing API with helia-ipns

[achingbrain]

I cannot push a branch here (see #8) but here are the patches to fix the type problem:

index 4c3194e..29f34f1 100644
--- a/package.json
+++ b/package.json
@@ -47,6 +47,7 @@
   "dependencies": {
     "@helia/ipns": "2.0.1",
     "@helia/unixfs": "1.x",
+    "@libp2p/interface": "^0.1.3",
     "express": "4.x",
     "express-prom-bundle": "6.x",
     "file-type": "18.x",

index 3d2197a..7f52ae6 100644
--- a/src/heliaFetch.ts
+++ b/src/heliaFetch.ts
@@ -8,6 +8,8 @@ import { createHelia, type Helia } from 'helia'
 import { LRUCache } from 'lru-cache'
 import { CID } from 'multiformats/cid'
 import pTryEach from 'p-try-each'
+import type { Libp2p } from '@libp2p/interface'
+import type { PubSub } from '@libp2p/interface/pubsub'
 
 const ROOT_FILE_PATTERNS = [
   'index.html',
@@ -22,7 +24,7 @@ export class HeliaFetch {
   private fs!: UnixFS
   private readonly log: debug.Debugger
   private readonly rootFilePatterns: string[]
-  public node!: Helia
+  public node!: Helia<Libp2p<{ pubsub: PubSub }>>
   public ready: Promise<void>
   private ipns!: ReturnType<typeof ipns>
   private readonly ipnsResolutionCache = new LRUCache<string, string>({
@@ -35,7 +37,7 @@ export class HeliaFetch {
     rootFilePatterns = ROOT_FILE_PATTERNS,
     logger
   }: {
-    node?: Helia
+    node?: Helia<Libp2p<{ pubsub: PubSub }>>
     rootFilePatterns?: string[]
     logger?: debug.Debugger
   } = {}) {
@@ -64,16 +66,7 @@ export class HeliaFetch {
     })
     this.ipns = ipns(this.node, [
       dht(this.node),
-      pubsub({
-        datastore: this.node.datastore,
-        libp2p: {
-          peerId: this.node.libp2p.peerId,
-          services: {
-            // mismatch types
-            pubsub: this.node.libp2p.services.pubsub
-          }
-        }
-      })
+      pubsub(this.node)
     ])
     this.fs = unixfs(this.node)
     this.log('Helia Setup Complete!')

The Helia type is generic and if used like this needs to have the Libp2p type it contains specified.

This is necessary because users can configure their own libp2p instance with their own custom services.

[whizzzkid]

@achingbrain that fixes the type issue but looks like it still doesn't work as expected 🤔