From 1397f9b05a011f312e71050ec3fce54fcecf456f Mon Sep 17 00:00:00 2001
From: Jannik Keye <jannik.keye@gmail.com>
Date: Wed, 4 Jul 2018 13:13:35 +0200
Subject: [PATCH] feat: add Reflect.setPrototypeOf

---
 src/js.rs                       |  9 +++++++
 tests/all/js_globals/Reflect.rs | 43 +++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/src/js.rs b/src/js.rs
index d2c8eada..38ade1dd 100644
--- a/src/js.rs
+++ b/src/js.rs
@@ -1075,6 +1075,15 @@ extern "C" {
     pub fn set(target: &JsValue, property_key: &JsValue, value: &JsValue) -> Result<JsValue, JsValue>;
     #[wasm_bindgen(static_method_of = Reflect, js_name = set, catch)]
     pub fn set_with_receiver(target: &JsValue, property_key: &JsValue, value: &JsValue, receiver: &JsValue) -> Result<JsValue, JsValue>;
+
+    /// The static Reflect.setPrototypeOf() method is the same 
+    /// method as Object.setPrototypeOf(). It sets the prototype 
+    /// (i.e., the internal [[Prototype]] property) of a specified 
+    /// object to another object or to null.
+    /// 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/setPrototypeOf
+    #[wasm_bindgen(static_method_of = Reflect, js_name = setPrototypeOf, catch)]
+    pub fn set_prototype_of(target: &JsValue, prototype: &JsValue) -> Result<JsValue, JsValue>;
 }
 
 // Set
diff --git a/tests/all/js_globals/Reflect.rs b/tests/all/js_globals/Reflect.rs
index 5f9f5b31..6bf2e212 100644
--- a/tests/all/js_globals/Reflect.rs
+++ b/tests/all/js_globals/Reflect.rs
@@ -657,4 +657,47 @@ fn set_with_receiver() {
         "#,
         )
         .test()
+}
+
+#[test]
+fn set_prototype_of() {
+    project()
+        .file(
+            "src/lib.rs",
+            r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn set_prototype_of(target: &JsValue, prototype: &JsValue) -> JsValue {
+                let result = js::Reflect::set_prototype_of(target, prototype);
+                let result = match result {
+                    Ok(val) => val,
+                    Err(_err) => "TypeError".into()
+                };
+                result
+            }
+        "#,
+        )
+        .file(
+            "test.ts",
+            r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                const object = {};
+                assert.equal(wasm.set_prototype_of(object, Object.prototype), true);
+                assert.equal(Object.getPrototypeOf(object), Object.prototype);
+                assert.equal(wasm.set_prototype_of(object, null), true);
+                assert.equal(Object.getPrototypeOf(object), null);
+
+                assert.equal(wasm.set_prototype_of("", Object.prototype), "TypeError");
+            }
+        "#,
+        )
+        .test()
 }
\ No newline at end of file