Remove isomorphic-ws dependency

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to
 ### Changed
 
 - all: Drop support for Node.js < 22.
+- @cosmjs/socket: Remove isomorphic-ws dependency ([#1810])
+
+[#1810]: https://github.com/cosmos/cosmjs/issues/1810
 
 ## [0.38.0] - 2025-12-30
 

packages/socket/package.json

@@ -43,8 +43,6 @@
   },
   "dependencies": {
     "@cosmjs/stream": "workspace:^",
-    "isomorphic-ws": "^4.0.1",
-    "ws": "^7",
     "xstream": "^11.14.0"
   },
   "devDependencies": {
@@ -54,7 +52,6 @@
     "@types/karma-firefox-launcher": "^2",
     "@types/karma-jasmine": "^4",
     "@types/karma-jasmine-html-reporter": "^1",
-    "@types/ws": "^6.0.1",
     "glob": "^13.0.0",
     "jasmine": "^4",
     "jasmine-spec-reporter": "^6",

packages/socket/src/socketwrapper.spec.ts

@@ -59,7 +59,7 @@ const enabled = !!globalThis.process?.env.SOCKETSERVER_ENABLED;
       (error) => {
         if (error.message) {
           // error message only available in nodejs
-          expect(error.message).toMatch(/ECONNREFUSED/i);
+          expect(error.message).toMatch(/network error or non-101 status code/i);
         }
         done();
       },

packages/socket/src/socketwrapper.ts

@@ -1,14 +1,3 @@
-// eslint-disable-next-line @typescript-eslint/naming-convention
-import WebSocket from "isomorphic-ws";
-
-function environmentIsNodeJs(): boolean {
-  return (
-    typeof process !== "undefined" &&
-    typeof process.versions !== "undefined" &&
-    typeof process.versions.node !== "undefined"
-  );
-}
-
 export interface SocketWrapperCloseEvent {
   readonly wasClean: boolean;
   readonly code: number;
@@ -29,7 +18,7 @@ export interface SocketWrapperMessageEvent {
 }
 
 /**
- * A thin wrapper around isomorphic-ws' WebSocket class that adds
+ * A thin wrapper around WebSocket that adds
  * - constant message/error/open/close handlers
  * - explicit connection via a connect() method
  * - type support for events
@@ -159,32 +148,21 @@ export class SocketWrapper {
   }
 
   public async send(data: string): Promise<void> {
-    return new Promise((resolve, reject) => {
-      if (!this.socket) {
-        throw new Error("Socket undefined. This must be called after connecting.");
-      }
+    if (!this.socket) {
+      throw new Error("Socket undefined. This must be called after connecting.");
+    }
 
-      if (this.closed) {
-        throw new Error("Socket was closed, so no data can be sent anymore.");
-      }
+    if (this.closed) {
+      throw new Error("Socket was closed, so no data can be sent anymore.");
+    }
 
-      // this exception should be thrown by send() automatically according to
-      // https://developer.mozilla.org/de/docs/Web/API/WebSocket#send() but it does not work in browsers
-      if (this.socket.readyState !== WebSocket.OPEN) {
-        throw new Error("Websocket is not open");
-      }
+    // this exception should be thrown by send() automatically according to
+    // https://developer.mozilla.org/de/docs/Web/API/WebSocket#send() but it does not work in browsers
+    if (this.socket.readyState !== WebSocket.OPEN) {
+      throw new Error("Websocket is not open");
+    }
 
-      if (environmentIsNodeJs()) {
-        this.socket.send(data, (err) => {
-          if (err) reject(err);
-          else resolve();
-        });
-      } else {
-        // Browser websocket send method does not accept a callback
-        this.socket.send(data);
-        resolve();
-      }
-    });
+    this.socket.send(data);
   }
 
   /**

packages/socket/src/streamingsocket.spec.ts

@@ -68,6 +68,13 @@ const enabled = !!globalThis.process?.env.SOCKETSERVER_ENABLED;
         subscription.unsubscribe();
         done();
       },
+      error: (err) => {
+        // err is an ErrorEvent but we don't get types for that
+        const error = err.error;
+        done.fail(
+          `Unexpected error in events stream: "${error.message}" / "${error.message}" / "${error.stack}" / JSON=${JSON.stringify(err)} (${err})`,
+        );
+      },
     });
 
     (async () => {

yarn.lock

@@ -539,9 +539,7 @@ __metadata:
     "@types/karma-firefox-launcher": "npm:^2"
     "@types/karma-jasmine": "npm:^4"
     "@types/karma-jasmine-html-reporter": "npm:^1"
-    "@types/ws": "npm:^6.0.1"
     glob: "npm:^13.0.0"
-    isomorphic-ws: "npm:^4.0.1"
     jasmine: "npm:^4"
     jasmine-spec-reporter: "npm:^6"
     karma: "npm:^6.3.14"
@@ -557,7 +555,6 @@ __metadata:
     typescript: "npm:~5.9"
     webpack: "npm:^5.76.0"
     webpack-cli: "npm:^4.6.0"
-    ws: "npm:^7"
     xstream: "npm:^11.14.0"
   languageName: unknown
   linkType: soft
@@ -1699,15 +1696,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/ws@npm:^6.0.1":
-  version: 6.0.4
-  resolution: "@types/ws@npm:6.0.4"
-  dependencies:
-    "@types/node": "npm:*"
-  checksum: 10c0/fa958e64596ca9487c3ed6012834de70b47f25d971f1950cfb8e6a99cb77ff340ae82ac7627744e01b58010674ef8ede07d5a2ac29ca9ad0d67a430fcc69ae14
-  languageName: node
-  linkType: hard
-
 "@typescript-eslint/eslint-plugin@npm:^8.46.0":
   version: 8.46.2
   resolution: "@typescript-eslint/eslint-plugin@npm:8.46.2"
@@ -4999,15 +4987,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"isomorphic-ws@npm:^4.0.1":
-  version: 4.0.1
-  resolution: "isomorphic-ws@npm:4.0.1"
-  peerDependencies:
-    ws: "*"
-  checksum: 10c0/7cb90dc2f0eb409825558982fb15d7c1d757a88595efbab879592f9d2b63820d6bbfb5571ab8abe36c715946e165a413a99f6aafd9f40ab1f514d73487bc9996
-  languageName: node
-  linkType: hard
-
 "istanbul-lib-coverage@npm:^3.0.0, istanbul-lib-coverage@npm:^3.0.0-alpha.1, istanbul-lib-coverage@npm:^3.2.0":
   version: 3.2.2
   resolution: "istanbul-lib-coverage@npm:3.2.2"
@@ -8083,21 +8062,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ws@npm:^7":
-  version: 7.5.10
-  resolution: "ws@npm:7.5.10"
-  peerDependencies:
-    bufferutil: ^4.0.1
-    utf-8-validate: ^5.0.2
-  peerDependenciesMeta:
-    bufferutil:
-      optional: true
-    utf-8-validate:
-      optional: true
-  checksum: 10c0/bd7d5f4aaf04fae7960c23dcb6c6375d525e00f795dd20b9385902bd008c40a94d3db3ce97d878acc7573df852056ca546328b27b39f47609f80fb22a0a9b61d
-  languageName: node
-  linkType: hard
-
 "ws@npm:~8.17.1":
   version: 8.17.1
   resolution: "ws@npm:8.17.1"