restructure project, add claudemd

go/bundler/jsx_bench_test.go

@@ -0,0 +1,43 @@
+package bundler
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func benchRead(b *testing.B, rel string) string {
+	b.Helper()
+	data, err := os.ReadFile(filepath.Join("..", "..", "frontend", "src", rel))
+	if err != nil {
+		b.Skipf("cannot read %s: %v", rel, err)
+	}
+	return string(data)
+}
+
+var benchComponents = []string{
+	"ui/AutoTable.tsx",              // ~212 KB
+	"ui/Forms.tsx",                  // ~75 KB
+	"pages/app/user/Profile.tsx",    // ~26 KB
+	"pages/public/PublicLayout.tsx", // ~27 KB
+}
+
+// BenchmarkCompileDev times the full dev HMR compile (Babel solid + solid-refresh
+// in goja) per component, busting the cache each iteration so every run is a real
+// recompile — the cost the browser waits on for a single-file HMR update. This is
+// the harness for judging whether a compile-path change actually moves the needle;
+// as of this writing the goja/Babel transform dominates (seconds for large files).
+func BenchmarkCompileDev(b *testing.B) {
+	for _, rel := range benchComponents {
+		src := benchRead(b, rel)
+		b.Run(rel, func(b *testing.B) {
+			for i := 0; i < b.N; i++ {
+				id := fmt.Sprintf("bench/c%d.tsx", i) // unique id -> cache miss
+				if _, err := CompileDev(src, id); err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+	}
+}