bindings for Generator.next()

src/js.rs

@@ -369,6 +369,19 @@ extern "C" {
     pub fn to_string(this: &Function) -> JsString;
 }
 
+// Generator
+#[wasm_bindgen]
+extern {
+    pub type Generator;
+
+    /// The next() method returns an object with two properties done and value.
+    /// You can also provide a parameter to the next method to send a value to the generator.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Generator/next
+    #[wasm_bindgen(method, structural)]
+    pub fn next(this: &Generator, value: &JsValue) -> JsValue;
+}
+
 // Map
 #[wasm_bindgen]
 extern {

tests/all/js_globals/Generator.rs

@@ -0,0 +1,51 @@
+#![allow(non_snake_case)]
+
+use project;
+
+#[test]
+fn next() {
+    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 next(this: &js::Generator, value: &JsValue) -> JsValue {
+                this.next(value)
+            }
+        "#,
+        )
+        .file(
+            "test.ts",
+            r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                function* generator() {
+                    const reply = yield '2 * 2';
+
+                    return reply === 4;
+                }
+
+                const gen = generator();
+
+                const q = wasm.next(gen, undefined);
+
+                assert.equal(q.value, '2 * 2');
+                assert.equal(q.done, false);
+
+                const a = wasm.next(gen, 4);
+
+                assert.equal(a.value, true);
+                assert.equal(a.done, true);
+            }
+        "#,
+        )
+        .test()
+}

tests/all/js_globals/mod.rs

@@ -8,6 +8,7 @@ mod Boolean;
 mod Date;
 mod Error;
 mod Function;
+mod Generator;
 mod JsString;
 mod Map;
 mod MapIterator;