use Date::now for SystemTime::now

src/lib.rs

@@ -11,24 +11,14 @@ cfg_if::cfg_if! {
         pub use wasm::Instant;
         #[cfg(feature = "now")]
         pub use crate::wasm::now;
+        pub use wasm::SystemTime;
     } else {
         mod native;
         pub use native::Instant;
         #[cfg(feature = "now")]
         pub use native::now;
+        pub use native::SystemTime;
     }
 }
 
-#[cfg(any(
-    not(any(target_arch = "wasm32", target_arch = "asmjs")),
-    not(any(feature = "stdweb", feature = "wasm-bindgen"))
-))]
-pub use crate::native::SystemTime;
-
-#[cfg(all(
-    any(target_arch = "wasm32", target_arch = "asmjs"),
-    any(feature = "stdweb", feature = "wasm-bindgen")
-))]
-pub use crate::wasm::SystemTime;
-
 pub use std::time::Duration;

src/wasm.rs

@@ -162,14 +162,32 @@ pub fn now() -> f64 {
     return unsafe { js::_emscripten_get_now() };
 }
 
+/// Returns the number of millisecods elapsed since January 1, 1970 00:00:00 UTC.
+#[cfg(any(feature = "wasm-bindgen", feature = "stdweb"))]
+fn get_time() -> f64 {
+    #[cfg(feature = "wasm-bindgen")]
+    return js_sys::Date::now();
+    #[cfg(all(feature = "stdweb", not(feature = "wasm-bindgen")))]
+    {
+        let v = js! { return Date.now(); };
+        return v.try_into().unwrap();
+    }
+}
+
 #[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
 pub struct SystemTime(f64);
 
 impl SystemTime {
     pub const UNIX_EPOCH: SystemTime = SystemTime(0.0);
 
     pub fn now() -> SystemTime {
-        SystemTime(now())
+        cfg_if::cfg_if! {
+            if #[cfg(any(feature = "wasm-bindgen", feature = "stdweb"))] {
+                SystemTime(get_time())
+            } else {
+                SystemTime(now())
+            }
+        }
     }
 
     pub fn duration_since(&self, earlier: SystemTime) -> Result<Duration, ()> {

tests/wasm.rs

@@ -54,3 +54,4 @@ fn test_system_time() {
         .duration_since(SystemTime::now())
         .is_err());
 }
+