diff --git a/internal/output_interceptor_wasm.go b/internal/output_interceptor_wasm.go
new file mode 100644
index 000000000..4c374935b
--- /dev/null
+++ b/internal/output_interceptor_wasm.go
@@ -0,0 +1,7 @@
+//go:build wasm
+
+package internal
+
+func NewOutputInterceptor() OutputInterceptor {
+	return &NoopOutputInterceptor{}
+}
diff --git a/internal/progress_report_wasm.go b/internal/progress_report_wasm.go
new file mode 100644
index 000000000..8c53fe0ad
--- /dev/null
+++ b/internal/progress_report_wasm.go
@@ -0,0 +1,10 @@
+//go:build wasm
+
+package internal
+
+import (
+	"os"
+	"syscall"
+)
+
+var PROGRESS_SIGNALS = []os.Signal{syscall.SIGUSR1}