attempt to build web version out of emscripten legacy gl wrapper

src/twn_filewatch.c

@@ -2,12 +2,12 @@
 #include "twn_util.h"
 #include "twn_engine_context_c.h"
 
+#ifndef EMSCRIPTEN
 #define DMON_IMPL
 #include <dmon.h>
 #include <stb_ds.h>
 #include <SDL2/SDL.h>
 
-
 struct FilewatchEntry {
     char *path;
     FilewatchCallback callback;
@@ -118,3 +118,19 @@ void filewatch_poll(void) {
 
     SDL_UnlockMutex(filewatcher_lock);
 }
+
+#else
+
+bool filewatch_add_directory(char const *dir, FilewatchCallback callback) {
+    (void)dir; (void)callback;
+    return true;
+}
+
+bool filewatch_add_file(char const *filepath, FilewatchCallback callback) {
+    (void)filepath; (void)callback;
+    return true;
+}
+
+void filewatch_poll(void) { (void)0; }
+
+#endif