From 0b55625d146940994a306101650a55ee58e32f6c Mon Sep 17 00:00:00 2001
From: Alex Potsides <alex@achingbrain.net>
Date: Sun, 23 Jun 2024 22:59:07 +0200
Subject: [PATCH] fix: move mplex capabilities to the factory (#2597)

These should be defined on the factory not the instance, since the
factory is the component.
---
 packages/stream-multiplexer-mplex/src/index.ts | 7 +++++++
 packages/stream-multiplexer-mplex/src/mplex.ts | 8 +-------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/packages/stream-multiplexer-mplex/src/index.ts b/packages/stream-multiplexer-mplex/src/index.ts
index 2766d94929..88b03db1e9 100644
--- a/packages/stream-multiplexer-mplex/src/index.ts
+++ b/packages/stream-multiplexer-mplex/src/index.ts
@@ -31,6 +31,7 @@
  * ```
  */
 
+import { serviceCapabilities } from '@libp2p/interface'
 import { MplexStreamMuxer, type MplexComponents } from './mplex.js'
 import type { StreamMuxer, StreamMuxerFactory, StreamMuxerInit } from '@libp2p/interface'
 
@@ -91,6 +92,12 @@ class Mplex implements StreamMuxerFactory {
     this._init = init
   }
 
+  readonly [Symbol.toStringTag] = '@libp2p/mplex'
+
+  readonly [serviceCapabilities]: string[] = [
+    '@libp2p/stream-multiplexing'
+  ]
+
   createStreamMuxer (init: StreamMuxerInit = {}): StreamMuxer {
     return new MplexStreamMuxer(this.components, {
       ...init,
diff --git a/packages/stream-multiplexer-mplex/src/mplex.ts b/packages/stream-multiplexer-mplex/src/mplex.ts
index 20b9799bcb..23746b9660 100644
--- a/packages/stream-multiplexer-mplex/src/mplex.ts
+++ b/packages/stream-multiplexer-mplex/src/mplex.ts
@@ -1,4 +1,4 @@
-import { CodeError, serviceCapabilities } from '@libp2p/interface'
+import { CodeError } from '@libp2p/interface'
 import { closeSource } from '@libp2p/utils/close-source'
 import { RateLimiter } from '@libp2p/utils/rate-limiter'
 import { pipe } from 'it-pipe'
@@ -120,12 +120,6 @@ export class MplexStreamMuxer implements StreamMuxer {
     })
   }
 
-  readonly [Symbol.toStringTag] = '@libp2p/mplex'
-
-  readonly [serviceCapabilities]: string[] = [
-    '@libp2p/stream-multiplexing'
-  ]
-
   /**
    * Returns a Map of streams and their ids
    */