diff --git a/packages/wasm/Cargo.lock b/packages/wasm/Cargo.lock
new file mode 100644
index 0000000..e32495c
--- /dev/null
+++ b/packages/wasm/Cargo.lock
@@ -0,0 +1,167 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
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+ "wasm-bindgen",
+]
+
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+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
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+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
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+ "once_cell",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
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+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
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+[[package]]
+name = "wasm-bindgen-shared"
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+]
diff --git a/packages/wasm/Cargo.toml b/packages/wasm/Cargo.toml
new file mode 100644
index 0000000..581eb06
--- /dev/null
+++ b/packages/wasm/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+edition = "2021"
+name    = "wasm"
+version = "0.1.0"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+wasm-bindgen = "0.2.100"
+wasm-bindgen-futures = "0.4.50"
diff --git a/packages/wasm/index.html b/packages/wasm/index.html
new file mode 100644
index 0000000..c99131e
--- /dev/null
+++ b/packages/wasm/index.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<html lang="en-US">
+  <head>
+    <meta charset="utf-8" />
+    <title>hello-wasm example</title>
+  </head>
+  <body>
+    <script type="module">
+      import init, { run  } from "./pkg/wasm.js";
+      init().then(() => {
+        run("WebAssembly");
+      });
+    </script>
+  </body>
+</html>
+
diff --git a/packages/wasm/src/lib.rs b/packages/wasm/src/lib.rs
new file mode 100644
index 0000000..de55f82
--- /dev/null
+++ b/packages/wasm/src/lib.rs
@@ -0,0 +1,11 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    pub fn alert(s: &str);
+}
+
+#[wasm_bindgen]
+pub async fn run(name: &str) {
+    alert(&format!("Hello, {}!", name));
+}