Vendor dependencies

Let's see how I like this workflow.

vendor/wasm-bindgen/tests/wasm/node.js

@@ -0,0 +1,37 @@
+const assert = require('assert');
+const wasm = require('wasm-bindgen-test');
+
+var called = false;
+
+exports.hit = function() {
+  called = true;
+};
+
+exports.FOO = 1.0;
+
+exports.test_works = function() {
+  assert.strictEqual(called, true);
+
+  var r = wasm.Foo.new();
+  assert.strictEqual(r.add(0), 0);
+  assert.strictEqual(r.add(1), 1);
+  assert.strictEqual(r.add(2), 3);
+  r.free();
+
+  var r2 = wasm.Foo.with_contents(10);
+  assert.strictEqual(r2.add(0), 10);
+  assert.strictEqual(r2.add(1), 11);
+  assert.strictEqual(r2.add(2), 13);
+  r2.free();
+
+  assert.strictEqual(wasm.Color.Green, 0);
+  assert.strictEqual(wasm.Color.Yellow, 1);
+  assert.strictEqual(wasm.Color.Red, 2);
+  assert.strictEqual(wasm.Color[0], 'Green');
+  assert.strictEqual(wasm.Color[1], 'Yellow');
+  assert.strictEqual(wasm.Color[2], 'Red');
+  assert.strictEqual(Object.keys(wasm.Color).length, 6);
+  assert.strictEqual(wasm.cycle(wasm.Color.Green), wasm.Color.Yellow);
+
+  wasm.node_math(1.0, 2.0);
+};