Need Help with Pthread example

[xalteropsx]

#include <pthread.h>
#include <emscripten.h>
#include <emscripten/console.h>



#define NUM_THREADS 4

void *thread_main(void *arg)
{
    emscripten_out("hello from thread!");
    emscripten_force_exit(0);
    __builtin_trap();
}
int main(){
    return 0;
}

extern "C" {
    int delta() {
        pthread_t thread;
        pthread_create(&thread, NULL, thread_main, NULL);
        emscripten_exit_with_live_runtime();
        __builtin_trap();
        return 1;
    }
}

emcc panda.cpp -o panda.wasm -s WASM=1 -s EXPORTED_FUNCTIONS=_delta -s -pthread

WebAssembly.instantiate(panda, {}); localhost/:1 Uncaught (in promise) TypeError: WebAssembly.instantiate(): Import #3 "wasi_snapshot_preview1": module is not an object or function

if possible plz provide an good example stuck to understand why it wont work with .wasm

[kripken]

See #23506 (comment) - wasm without JS has no way to spawn threads. JS is necessary.