fix: prevent browserslist from reading pnpm shim files

.changeset/fix-browserslist-pnpm.md

@@ -0,0 +1,12 @@
+---
+"@asyncapi/generator": patch
+---
+
+Fix browserslist error when using pnpm
+
+Set BROWSERSLIST_ROOT_PATH environment variable during template compilation
+to prevent browserslist from searching outside the template directory. This
+fixes an issue where pnpm's shim files were incorrectly parsed as browserslist
+configuration, causing "Unknown browser query" errors.
+
+Fixes: https://github.com/asyncapi/cli/issues/1781

apps/generator/lib/generator.js

@@ -401,7 +401,22 @@ class Generator {
    */
   async configureTemplate() {
     if (this.compile) {
-      await configureReact(this.templateDir, this.templateContentDir, TRANSPILED_TEMPLATE_LOCATION);
+      // Set BROWSERSLIST_ROOT_PATH to prevent browserslist from searching
+      // outside the template directory. This fixes issues with pnpm where
+      // browserslist would incorrectly parse pnpm shim files as config.
+      // See: https://github.com/asyncapi/cli/issues/1781
+      const previousRootPath = process.env.BROWSERSLIST_ROOT_PATH;
+      process.env.BROWSERSLIST_ROOT_PATH = this.templateDir;
+      try {
+        await configureReact(this.templateDir, this.templateContentDir, TRANSPILED_TEMPLATE_LOCATION);
+      } finally {
+        // Restore previous value if it existed
+        if (previousRootPath === undefined) {
+          delete process.env.BROWSERSLIST_ROOT_PATH;
+        } else {
+          process.env.BROWSERSLIST_ROOT_PATH = previousRootPath;
+        }
+      }
     }
   }