binding for Date.prototype.setDate()

src/js.rs

@@ -1021,6 +1021,12 @@ extern "C" {
     #[wasm_bindgen(static_method_of = Date)]
     pub fn parse(date: JsString) -> f64;
 
+    /// The setDate() method sets the day of the Date object relative to the beginning of the currently set month.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/setDate
+    #[wasm_bindgen(method, js_name = setDate)]
+    pub fn set_date(this: &Date, day: u32) -> f64;
+
     /// The toDateString() method returns the date portion of a Date object
     /// in human readable form in American English.
     ///

tests/all/js_globals/Date.rs

@@ -726,6 +726,45 @@ fn parse() {
         .test()
 }
 
+#[test]
+fn set_date() {
+    project()
+        .file(
+            "src/lib.rs",
+            r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js::Date;
+
+            #[wasm_bindgen]
+            pub fn set_date(this: &Date, day: u32) -> f64 {
+                this.set_date(day)
+            }
+        "#,
+        )
+        .file(
+            "test.js",
+            r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                let event1 = new Date('August 19, 1975 23:15:30');
+                let event2 = new Date('August 24, 1975 23:15:30');
+
+                let eventMsFromUnixEpoch = wasm.set_date(event1, 24);
+
+                assert.equal(eventMsFromUnixEpoch, 178121730000);
+                assert.equal(event1.getTime(), event2.valueOf());
+                assert.equal(event1.getDate(), 24);
+            }
+        "#,
+        )
+        .test()
+}
+
 #[test]
 fn to_date_string() {
     project()