1#[cfg(target_arch = "wasm32")]
 2use web_sys::console;
 3
 4pub fn set_panic_hook() {
 5    // When the `console_error_panic_hook` feature is enabled, we can call the
 6    // `set_panic_hook` function at least once during initialization, and then
 7    // we will get better error messages if our code ever panics.
 8    //
 9    // For more details see
10    // https://github.com/rustwasm/console_error_panic_hook#readme
11    #[cfg(feature = "console_error_panic_hook")]
12    console_error_panic_hook::set_once();
13}
14
15pub fn dbg(s: String) {
16    #[cfg(target_arch = "wasm32")]
17    console::log_1(&s.into());
18
19    #[cfg(not(target_arch = "wasm32"))]
20    println!("{}", s);
21}
22
23pub fn get_time() -> u64 {
24    #[cfg(target_arch = "wasm32")]
25    let start = get_wasm_time() as u64;
26
27    #[cfg(not(target_arch = "wasm32"))]
28    let start = std::time::SystemTime::now()
29        .duration_since(std::time::UNIX_EPOCH)
30        .unwrap()
31        .as_millis() as u64;
32
33    start
34}
35
36pub fn elapsed(start: u64) -> u64 {
37    #[cfg(target_arch = "wasm32")]
38    let end = get_wasm_time() as u64;
39
40    #[cfg(not(target_arch = "wasm32"))]
41    let end = std::time::SystemTime::now()
42        .duration_since(std::time::UNIX_EPOCH)
43        .unwrap()
44        .as_millis() as u64;
45
46    end - start
47}
48
49#[cfg(target_arch = "wasm32")]
50fn get_wasm_time() -> u64 {
51    use web_sys::{window, Performance};
52    let window = window().expect("should have a window in this context");
53    let performance = window
54        .performance()
55        .expect("performance should be available");
56    performance.now() as u64
57}