diff --git a/packages/compliance-tests/src/peer-id/index.js b/packages/compliance-tests/src/peer-id/index.js
index fa20d01ed..cff78a0f3 100644
--- a/packages/compliance-tests/src/peer-id/index.js
+++ b/packages/compliance-tests/src/peer-id/index.js
@@ -357,10 +357,6 @@ module.exports = (common) => {
       const peerId2 = factory.createFromB58String(peerId.toB58String())
 
       expect(peerId1).to.deep.equal(peerId2)
-
-      peerId1.toString()
-
-      expect(peerId1).to.deep.equal(peerId2)
     })
 
     describe('throws on inconsistent data', () => {
@@ -382,29 +378,24 @@ module.exports = (common) => {
 
       it('missmatch private - public key', async () => {
         const digest = await k1.public.hash()
-        expect(() => {
-          factory.createFromJSON({
-            id: digest,
-            pubKey: k1,
-            privKey: k2.public
-          }) // eslint-disable-line no-new
-        }).to.throw(/inconsistent arguments/)
+        await expect(factory.createFromJSON({
+          id: digest,
+          pubKey: k1,
+          privKey: k2.public
+        })).eventually.be.rejectedWith(/inconsistent arguments/)
       })
 
       it('missmatch id - private - public key', async () => {
         const digest = await k1.public.hash()
-        expect(() => {
-          factory.createFromJSON({
-            id: digest,
-            pubKey: k1,
-            privKey: k3.public
-          }) // eslint-disable-line no-new
-        }).to.throw(/inconsistent arguments/)
+        await expect(factory.createFromJSON({
+          id: digest,
+          pubKey: k1,
+          privKey: k3.public
+        })).eventually.be.rejectedWith(/inconsistent arguments/)
       })
 
       it('invalid id', () => {
-        // @ts-expect-error incorrect constructor arg type
-        expect(() => factory.createFromJSON('hello world')).to.throw(/invalid id/)
+        await expect(factory.createFromJSON('hello world')).eventually.be.rejectedWith(/invalid id/)
       })
     })
   })
diff --git a/packages/interfaces/src/peer-id/types.d.ts b/packages/interfaces/src/peer-id/types.d.ts
index 0c69cc8b4..0e0e31aba 100644
--- a/packages/interfaces/src/peer-id/types.d.ts
+++ b/packages/interfaces/src/peer-id/types.d.ts
@@ -1,26 +1,26 @@
 import type { CID } from 'multiformats/cid'
 import type { PublicKey, PrivateKey, KeyType } from '../keys/types'
 
-interface PeerIdJSON {
+export interface PeerIdJSON {
   readonly id: string;
   readonly pubKey?: string;
   readonly privKey?: string;
 }
 
-interface CreateOptions {
+export interface CreateOptions {
   bits?: number;
   keyType?: KeyType;
 }
 
 export interface PeerId {
-  readonly id: Uint8Array;
-  privKey:  PrivateKey;
-  pubKey: PublicKey;
+  readonly id: Uint8Array
+  privKey: PrivateKey | undefined;
+  pubKey: PublicKey | undefined;
 
   /**
    * Return the protobuf version of the public key, matching go ipfs formatting
    */
-  marshalPubKey ():Uint8Array;
+  marshalPubKey: () => Uint8Array | undefined;
 
   /**
    * Return the protobuf version of the private key, matching go ipfs formatting
@@ -85,6 +85,11 @@ export interface PeerId {
 }
 
 export interface PeerIdFactory {
+  /**
+   * Create a new PeerId.
+   **/
+  new (id: Uint8Array, privKey?: PrivateKey, pubKey?: PublicKey): PeerId;
+
   /**
    * Create a new PeerId.
    **/