chore: extract test code

createFrom* functions are only used in test.
By extracting them in different class it should help
bundlers.

packages/dns-discovery/src/fetch_nodes.spec.ts

@@ -1,6 +1,7 @@
 import { createSecp256k1PeerId } from "@libp2p/peer-id-factory";
 import { multiaddr } from "@multiformats/multiaddr";
 import { ENR } from "@waku/enr";
+import { EnrCreator } from "@waku/enr";
 import type { Waku2 } from "@waku/interfaces";
 import { expect } from "chai";
 
@@ -8,7 +9,7 @@ import { fetchNodesUntilCapabilitiesFulfilled } from "./fetch_nodes.js";
 
 async function createEnr(waku2: Waku2): Promise<ENR> {
   const peerId = await createSecp256k1PeerId();
-  const enr = await ENR.createFromPeerId(peerId);
+  const enr = await EnrCreator.fromPeerId(peerId);
   enr.setLocationMultiaddr(multiaddr("/ip4/18.223.219.100/udp/9000"));
   enr.multiaddrs = [
     multiaddr("/dns4/node1.do-ams.wakuv2.test.statusim.net/tcp/443/wss"),

packages/enr/src/creator.ts

@@ -0,0 +1,36 @@
+import { PeerId } from "@libp2p/interface-peer-id";
+import type { ENRKey, ENRValue } from "@waku/interfaces";
+import { utf8ToBytes } from "@waku/utils";
+
+import { compressPublicKey } from "./crypto.js";
+import { ENR } from "./enr.js";
+import { getPublicKeyFromPeerId } from "./peer_id.js";
+
+export class EnrCreator {
+  static fromPublicKey(
+    publicKey: Uint8Array,
+    kvs: Record<ENRKey, ENRValue> = {}
+  ): Promise<ENR> {
+    // EIP-778 specifies that the key must be in compressed format, 33 bytes
+    if (publicKey.length !== 33) {
+      publicKey = compressPublicKey(publicKey);
+    }
+    return ENR.create({
+      ...kvs,
+      id: utf8ToBytes("v4"),
+      secp256k1: publicKey,
+    });
+  }
+
+  static async fromPeerId(
+    peerId: PeerId,
+    kvs: Record<ENRKey, ENRValue> = {}
+  ): Promise<ENR> {
+    switch (peerId.type) {
+      case "secp256k1":
+        return EnrCreator.fromPublicKey(getPublicKeyFromPeerId(peerId), kvs);
+      default:
+        throw new Error();
+    }
+  }
+}

packages/enr/src/enr.spec.ts

@@ -7,6 +7,7 @@ import { assert, expect } from "chai";
 import { equals } from "uint8arrays/equals";
 
 import { ERR_INVALID_ID } from "./constants.js";
+import { EnrCreator } from "./creator.js";
 import { ENR } from "./enr.js";
 import { getPrivateKeyFromPeerId } from "./peer_id.js";
 
@@ -14,7 +15,7 @@ describe("ENR", function () {
   describe("Txt codec", () => {
     it("should encodeTxt and decodeTxt", async () => {
       const peerId = await createSecp256k1PeerId();
-      const enr = await ENR.createFromPeerId(peerId);
+      const enr = await EnrCreator.fromPeerId(peerId);
       const privateKey = await getPrivateKeyFromPeerId(peerId);
       enr.setLocationMultiaddr(multiaddr("/ip4/18.223.219.100/udp/9000"));
       enr.multiaddrs = [
@@ -106,7 +107,7 @@ describe("ENR", function () {
     it("should throw error - no id", async () => {
       try {
         const peerId = await createSecp256k1PeerId();
-        const enr = await ENR.createFromPeerId(peerId);
+        const enr = await EnrCreator.fromPeerId(peerId);
         const privateKey = await getPrivateKeyFromPeerId(peerId);
         enr.setLocationMultiaddr(multiaddr("/ip4/18.223.219.100/udp/9000"));
 
@@ -194,7 +195,7 @@ describe("ENR", function () {
       privateKey = hexToBytes(
         "b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291"
       );
-      record = await ENR.createFromPublicKey(secp.getPublicKey(privateKey));
+      record = await EnrCreator.fromPublicKey(secp.getPublicKey(privateKey));
       record.setLocationMultiaddr(multiaddr("/ip4/127.0.0.1/udp/30303"));
       record.seq = seq;
       await record.encodeTxt(privateKey);
@@ -239,7 +240,7 @@ describe("ENR", function () {
       privateKey = hexToBytes(
         "b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291"
       );
-      record = await ENR.createFromPublicKey(secp.getPublicKey(privateKey));
+      record = await EnrCreator.fromPublicKey(secp.getPublicKey(privateKey));
     });
 
     it("should get / set UDP multiaddr", () => {
@@ -308,7 +309,7 @@ describe("ENR", function () {
 
     before(async function () {
       peerId = await createSecp256k1PeerId();
-      enr = await ENR.createFromPeerId(peerId);
+      enr = await EnrCreator.fromPeerId(peerId);
       enr.ip = ip4;
       enr.ip6 = ip6;
       enr.tcp = tcp;
@@ -388,7 +389,7 @@ describe("ENR", function () {
 
     beforeEach(async function () {
       peerId = await createSecp256k1PeerId();
-      enr = await ENR.createFromPeerId(peerId);
+      enr = await EnrCreator.fromPeerId(peerId);
       privateKey = await getPrivateKeyFromPeerId(peerId);
       waku2Protocols = {
         relay: false,

packages/enr/src/enr.ts

@@ -23,13 +23,10 @@ import {
   ERR_NO_SIGNATURE,
   MAX_RECORD_SIZE,
 } from "./constants.js";
-import { compressPublicKey, keccak256, verifySignature } from "./crypto.js";
+import { keccak256, verifySignature } from "./crypto.js";
 import { multiaddrFromFields } from "./multiaddr_from_fields.js";
 import { decodeMultiaddrs, encodeMultiaddrs } from "./multiaddrs_codec.js";
-import {
-  createPeerIdFromPublicKey,
-  getPublicKeyFromPeerId,
-} from "./peer_id.js";
+import { createPeerIdFromPublicKey } from "./peer_id.js";
 import * as v4 from "./v4.js";
 import { decodeWaku2, encodeWaku2 } from "./waku2_codec.js";
 
@@ -69,33 +66,6 @@ export class ENR extends Map<ENRKey, ENRValue> implements IEnr {
     return enr;
   }
 
-  static createFromPublicKey(
-    publicKey: Uint8Array,
-    kvs: Record<ENRKey, ENRValue> = {}
-  ): Promise<ENR> {
-    // EIP-778 specifies that the key must be in compressed format, 33 bytes
-    if (publicKey.length !== 33) {
-      publicKey = compressPublicKey(publicKey);
-    }
-    return ENR.create({
-      ...kvs,
-      id: utf8ToBytes("v4"),
-      secp256k1: publicKey,
-    });
-  }
-
-  static async createFromPeerId(
-    peerId: PeerId,
-    kvs: Record<ENRKey, ENRValue> = {}
-  ): Promise<ENR> {
-    switch (peerId.type) {
-      case "secp256k1":
-        return ENR.createFromPublicKey(getPublicKeyFromPeerId(peerId), kvs);
-      default:
-        throw new Error();
-    }
-  }
-
   static async decodeFromValues(decoded: Uint8Array[]): Promise<ENR> {
     if (!Array.isArray(decoded)) {
       throw new Error("Decoded ENR must be an array");

packages/enr/src/index.ts

@@ -1,4 +1,5 @@
 export * from "./constants.js";
+export * from "./creator.js";
 export * from "./enr.js";
 export * from "./peer_id.js";
 export * from "./waku2_codec.js";