Fix c.homedir runtime error with browser-compatible os polyfill

Co-authored-by: 0xrinegade <[email protected]>

Author: Copilot

craco.config.js

@@ -76,7 +76,7 @@ module.exports = {
         assert: require.resolve('assert'),
         util: require.resolve('util'),
         url: require.resolve('url'),
-        os: require.resolve('os'),
+        os: require.resolve('./src/polyfills/os-browser.js'),
         path: require.resolve('path-browserify'),
         vm: require.resolve('vm-browserify'),
         fs: false,

src/polyfills/os-browser.js

@@ -0,0 +1,118 @@
+/**
+ * Browser-compatible polyfill for Node.js 'os' module
+ * Provides stub implementations that don't crash in browser environment
+ */
+
+// Browser-safe implementations
+const EOL = '\n';
+
+function arch() {
+  return 'browser';
+}
+
+function platform() {
+  if (typeof navigator !== 'undefined') {
+    const userAgent = navigator.userAgent.toLowerCase();
+    if (userAgent.includes('mac')) return 'darwin';
+    if (userAgent.includes('win')) return 'win32';
+    if (userAgent.includes('linux')) return 'linux';
+  }
+  return 'browser';
+}
+
+function release() {
+  return '1.0.0';
+}
+
+function hostname() {
+  if (typeof window !== 'undefined' && window.location) {
+    return window.location.hostname || 'localhost';
+  }
+  return 'localhost';
+}
+
+function homedir() {
+  // In browser, return a safe default instead of throwing
+  return '/home/user';
+}
+
+function tmpdir() {
+  return '/tmp';
+}
+
+function userInfo() {
+  return {
+    uid: 1000,
+    gid: 1000,
+    username: 'user',
+    homedir: homedir(),
+    shell: '/bin/bash'
+  };
+}
+
+function cpus() {
+  // Return stub CPU info
+  const numCores = typeof navigator !== 'undefined' && navigator.hardwareConcurrency 
+    ? navigator.hardwareConcurrency 
+    : 4;
+  
+  return Array(numCores).fill({
+    model: 'Browser CPU',
+    speed: 2400,
+    times: {
+      user: 0,
+      nice: 0,
+      sys: 0,
+      idle: 0,
+      irq: 0
+    }
+  });
+}
+
+function freemem() {
+  // Return estimated free memory (256MB)
+  return 256 * 1024 * 1024;
+}
+
+function totalmem() {
+  // Return estimated total memory (2GB)
+  return 2 * 1024 * 1024 * 1024;
+}
+
+function loadavg() {
+  return [0.1, 0.1, 0.1];
+}
+
+function uptime() {
+  return Math.floor(Date.now() / 1000);
+}
+
+function networkInterfaces() {
+  return {};
+}
+
+function type() {
+  return platform();
+}
+
+// Export all the functions
+module.exports = {
+  EOL,
+  arch,
+  platform,
+  release,
+  hostname,
+  homedir,
+  tmpdir,
+  userInfo,
+  cpus,
+  freemem,
+  totalmem,
+  loadavg,
+  uptime,
+  networkInterfaces,
+  type
+};
+
+// Also provide default export for ES6 imports
+module.exports.default = module.exports;