diff --git a/src/utils/node-modules/assert.js b/src/utils/node-modules/assert.js
new file mode 100644
index 00000000..ab4b9c5c
--- /dev/null
+++ b/src/utils/node-modules/assert.js
@@ -0,0 +1,31 @@
+// Minimal assert module implementation for browser
+const assert = {
+  ok: (value, message) => {
+    if (!value) {
+      throw new Error(message || "Assertion failed");
+    }
+  },
+  equal: (actual, expected, message) => {
+    if (actual !== expected) {
+      throw new Error(message || `Expected ${expected} but got ${actual}`);
+    }
+  },
+  strictEqual: (actual, expected, message) => {
+    if (actual !== expected) {
+      throw new Error(message || `Expected ${expected} but got ${actual}`);
+    }
+  },
+  deepEqual: (actual, expected, message) => {
+    if (JSON.stringify(actual) !== JSON.stringify(expected)) {
+      throw new Error(
+        message ||
+          `Expected ${JSON.stringify(expected)} but got ${JSON.stringify(actual)}`,
+      );
+    }
+  },
+  fail: (message) => {
+    throw new Error(message || "Assertion failed");
+  },
+};
+
+export default assert;
diff --git a/src/utils/node-modules/http.js b/src/utils/node-modules/http.js
new file mode 100644
index 00000000..176d529a
--- /dev/null
+++ b/src/utils/node-modules/http.js
@@ -0,0 +1,14 @@
+// Minimal http module implementation for browser
+const http = {
+  request: () => {
+    throw new Error("http.request is not supported in browser");
+  },
+  get: () => {
+    throw new Error("http.get is not supported in browser");
+  },
+  createServer: () => {
+    throw new Error("http.createServer is not supported in browser");
+  },
+};
+
+export default http;
diff --git a/src/utils/node-modules/https.js b/src/utils/node-modules/https.js
new file mode 100644
index 00000000..0d5e547c
--- /dev/null
+++ b/src/utils/node-modules/https.js
@@ -0,0 +1,14 @@
+// Minimal https module implementation for browser
+const https = {
+  request: () => {
+    throw new Error("https.request is not supported in browser");
+  },
+  get: () => {
+    throw new Error("https.get is not supported in browser");
+  },
+  createServer: () => {
+    throw new Error("https.createServer is not supported in browser");
+  },
+};
+
+export default https;
diff --git a/src/utils/node-modules/stream.js b/src/utils/node-modules/stream.js
new file mode 100644
index 00000000..c2b00633
--- /dev/null
+++ b/src/utils/node-modules/stream.js
@@ -0,0 +1,25 @@
+// Minimal stream module implementation for browser
+const stream = {
+  Readable: class Readable {
+    constructor() {
+      throw new Error("stream.Readable is not supported in browser");
+    }
+  },
+  Writable: class Writable {
+    constructor() {
+      throw new Error("stream.Writable is not supported in browser");
+    }
+  },
+  Transform: class Transform {
+    constructor() {
+      throw new Error("stream.Transform is not supported in browser");
+    }
+  },
+  PassThrough: class PassThrough {
+    constructor() {
+      throw new Error("stream.PassThrough is not supported in browser");
+    }
+  },
+};
+
+export default stream;
diff --git a/src/utils/node-modules/tty.js b/src/utils/node-modules/tty.js
new file mode 100644
index 00000000..8b5309df
--- /dev/null
+++ b/src/utils/node-modules/tty.js
@@ -0,0 +1,16 @@
+// Minimal tty module implementation for browser
+const tty = {
+  isatty: () => false,
+  ReadStream: class ReadStream {
+    constructor() {
+      throw new Error("tty.ReadStream is not supported in browser");
+    }
+  },
+  WriteStream: class WriteStream {
+    constructor() {
+      throw new Error("tty.WriteStream is not supported in browser");
+    }
+  },
+};
+
+export default tty;
diff --git a/src/utils/node-modules/url.js b/src/utils/node-modules/url.js
new file mode 100644
index 00000000..e885c427
--- /dev/null
+++ b/src/utils/node-modules/url.js
@@ -0,0 +1,25 @@
+// Minimal url module implementation for browser
+const url = {
+  parse: (urlString) => {
+    try {
+      return new URL(urlString);
+    } catch (e) {
+      throw new Error(`Invalid URL: ${urlString}`);
+    }
+  },
+  format: (urlObj) => {
+    if (urlObj instanceof URL) {
+      return urlObj.href;
+    }
+    return urlObj.toString();
+  },
+  resolve: (from, to) => {
+    try {
+      return new URL(to, from).href;
+    } catch (e) {
+      throw new Error(`Invalid URL resolution: ${from} -> ${to}`);
+    }
+  },
+};
+
+export default url;
diff --git a/src/utils/node-modules/util.js b/src/utils/node-modules/util.js
new file mode 100644
index 00000000..48ab77d8
--- /dev/null
+++ b/src/utils/node-modules/util.js
@@ -0,0 +1,31 @@
+// Minimal util module implementation for browser
+const util = {
+  inherits: () => {},
+  format: (...args) => args.join(" "),
+  inspect: (obj) => JSON.stringify(obj),
+  isArray: Array.isArray,
+  isBoolean: (val) => typeof val === "boolean",
+  isNull: (val) => val === null,
+  isNullOrUndefined: (val) => val == null,
+  isNumber: (val) => typeof val === "number",
+  isString: (val) => typeof val === "string",
+  isSymbol: (val) => typeof val === "symbol",
+  isUndefined: (val) => val === undefined,
+  isRegExp: (val) => val instanceof RegExp,
+  isDate: (val) => val instanceof Date,
+  isError: (val) => val instanceof Error,
+  isFunction: (val) => typeof val === "function",
+  isObject: (val) => val !== null && typeof val === "object",
+  isPrimitive: (val) => {
+    return (
+      val === null ||
+      typeof val === "boolean" ||
+      typeof val === "number" ||
+      typeof val === "string" ||
+      typeof val === "symbol" ||
+      typeof val === "undefined"
+    );
+  },
+};
+
+export default util;
diff --git a/src/utils/node-modules/zlib.js b/src/utils/node-modules/zlib.js
new file mode 100644
index 00000000..7549bd8b
--- /dev/null
+++ b/src/utils/node-modules/zlib.js
@@ -0,0 +1,29 @@
+// Minimal zlib module implementation for browser
+const zlib = {
+  gzip: () => {
+    throw new Error("zlib.gzip is not supported in browser");
+  },
+  gunzip: () => {
+    throw new Error("zlib.gunzip is not supported in browser");
+  },
+  deflate: () => {
+    throw new Error("zlib.deflate is not supported in browser");
+  },
+  inflate: () => {
+    throw new Error("zlib.inflate is not supported in browser");
+  },
+  createGzip: () => {
+    throw new Error("zlib.createGzip is not supported in browser");
+  },
+  createGunzip: () => {
+    throw new Error("zlib.createGunzip is not supported in browser");
+  },
+  createDeflate: () => {
+    throw new Error("zlib.createDeflate is not supported in browser");
+  },
+  createInflate: () => {
+    throw new Error("zlib.createInflate is not supported in browser");
+  },
+};
+
+export default zlib;
diff --git a/vite.config.common.mts b/vite.config.common.mts
index 200057dc..1c80b966 100644
--- a/vite.config.common.mts
+++ b/vite.config.common.mts
@@ -79,6 +79,14 @@ export async function createBuildConfig(mode: string): Promise<UserConfig> {
         'path': path.resolve(__dirname, './src/utils/node-modules/path.js'),
         'fs': path.resolve(__dirname, './src/utils/node-modules/fs.js'),
         'crypto': path.resolve(__dirname, './src/utils/node-modules/crypto.js'),
+        'util': path.resolve(__dirname, './src/utils/node-modules/util.js'),
+        'stream': path.resolve(__dirname, './src/utils/node-modules/stream.js'),
+        'http': path.resolve(__dirname, './src/utils/node-modules/http.js'),
+        'https': path.resolve(__dirname, './src/utils/node-modules/https.js'),
+        'url': path.resolve(__dirname, './src/utils/node-modules/url.js'),
+        'assert': path.resolve(__dirname, './src/utils/node-modules/assert.js'),
+        'tty': path.resolve(__dirname, './src/utils/node-modules/tty.js'),
+        'zlib': path.resolve(__dirname, './src/utils/node-modules/zlib.js'),
         'nostr-tools/nip06': mode === 'development' 
           ? 'nostr-tools/nip06'
           : path.resolve(__dirname, 'node_modules/nostr-tools/nip06'),