Vendor dependencies

Let's see how I like this workflow.

vendor/wasm-bindgen/tests/wasm/final.rs

@@ -0,0 +1,40 @@
+use wasm_bindgen::prelude::*;
+use wasm_bindgen_test::*;
+
+#[wasm_bindgen]
+extern "C" {
+    type Math;
+    #[wasm_bindgen(static_method_of = Math, final)]
+    fn log(f: f32) -> f32;
+}
+
+#[wasm_bindgen(module = "tests/wasm/final.js")]
+extern "C" {
+    type MyType;
+    #[wasm_bindgen(constructor, final)]
+    fn new(x: u32) -> MyType;
+    #[wasm_bindgen(static_method_of = MyType, final)]
+    fn foo(a: &str) -> String;
+    #[wasm_bindgen(method, final)]
+    fn bar(this: &MyType, arg: bool) -> f32;
+
+    #[wasm_bindgen(method, getter, final)]
+    fn a(this: &MyType) -> u32;
+    #[wasm_bindgen(method, setter, final)]
+    fn set_a(this: &MyType, a: u32);
+}
+
+#[wasm_bindgen_test]
+fn simple() {
+    assert_eq!(Math::log(1.0), 0.0);
+}
+
+#[wasm_bindgen_test]
+fn classes() {
+    assert_eq!(MyType::foo("x"), "xy");
+    let x = MyType::new(2);
+    assert_eq!(x.bar(true), 3.2);
+    assert_eq!(x.a(), 1);
+    x.set_a(3);
+    assert_eq!(x.a(), 3);
+}