Vendor dependencies

Let's see how I like this workflow.

vendor/js-sys/tests/wasm/Reflect.js

@@ -0,0 +1,41 @@
+exports.get_char_at = function() {
+  return "foo".charAt;
+};
+
+exports.Rectangle = class {
+  constructor(x, y){
+    this.x = x,
+    this.y = y
+  }
+
+  static eq(x, y) {
+    return x === y;
+  }
+};
+
+exports.Rectangle2 = class {
+  constructor(x, y){
+    this.x = x,
+    this.y = y
+  }
+
+  static eq(x, y) {
+    return x === y;
+  }
+};
+
+exports.throw_all_the_time = () => new Proxy({}, {
+  getPrototypeOf() { throw new Error("nope"); },
+  setPrototypeOf() { throw new Error("nope"); },
+  isExtensible() { throw new Error("nope"); },
+  preventExtensions() { throw new Error("nope"); },
+  getOwnPropertyDescriptor() { throw new Error("nope"); },
+  defineProperty() { throw new Error("nope"); },
+  has() { throw new Error("nope"); },
+  get() { throw new Error("nope"); },
+  set() { throw new Error("nope"); },
+  deleteProperty() { throw new Error("nope"); },
+  ownKeys() { throw new Error("nope"); },
+  apply() { throw new Error("nope"); },
+  construct() { throw new Error("nope"); },
+});