fix: work around inotify resource starvation

In order to avoid running out of kernel inotify handles in development
environments where it's not possible to raise the corresponding limit,
stop watching `node_modules` when running `openedx dev`.

Author: arbrandes

tools/webpack/webpack.config.dev.shell.ts

@@ -117,6 +117,11 @@ const config: Configuration = {
   // reloading.
 
   devServer: getDevServer(),
+
+  // Limit the number of watched files to avoid `inotify` resource starvation.
+  watchOptions: {
+    ignored: /node_modules/
+  }
 };
 
 export default config;

tools/webpack/webpack.config.dev.ts

@@ -85,6 +85,11 @@ const config: Configuration = {
   // reloading.
 
   devServer: getDevServer(),
+
+  // Limit the number of watched files to avoid `inotify` resource starvation.
+  watchOptions: {
+    ignored: /node_modules/
+  }
 };
 
 export default config;