commit bc1d171cadf801763bd6798dfbd8d5ad971c8b57
Author: Michael Pfaff <michael@pfaff.dev>
Date:   Sun Feb 27 23:25:12 2022 -0500

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..96ef6c0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..8424e37
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "wasm-time"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+time = "0.3"
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+wasm-bindgen = "0.2"
+
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..9dd2b4d
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,18 @@
+use time::OffsetDateTime;
+
+#[cfg(target_arch = "wasm32")]
+#[wasm_bindgen::prelude::wasm_bindgen(inline_js = r#"
+export function unix_millis_now() {
+  return Date.now();
+}"#)]
+extern "C" {
+    fn unix_millis_now() -> f64;
+}
+
+pub fn now_utc() -> OffsetDateTime {
+    #[cfg(target_arch = "wasm32")]
+    return OffsetDateTime::from_unix_timestamp_nanos((unix_millis_now() * 1_000_000f64) as i128).expect("time outside supported range");
+    #[cfg(not(target_arch = "wasm32"))]
+    return OffsetDateTime::now_utc();
+}
+