feat(js-sys) Implement String.split with regexp.

crates/js-sys/src/lib.rs

@@ -3113,6 +3113,14 @@ extern "C" {
     #[wasm_bindgen(method, js_class = "String", js_name = split)]
     pub fn split_limit(this: &JsString, separator: &str, limit: u32) -> Array;
 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split
+    #[wasm_bindgen(method, js_class = "String", js_name = split)]
+    pub fn split_by_pattern(this: &JsString, pattern: &RegExp) -> Array;
+
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split
+    #[wasm_bindgen(method, js_class = "String", js_name = split)]
+    pub fn split_by_pattern_limit(this: &JsString, pattern: &RegExp, limit: u32) -> Array;
+
     /// The `startsWith()` method determines whether a string begins with the
     /// characters of a specified string, returning true or false as
     /// appropriate.

crates/js-sys/tests/wasm/JsString.rs

@@ -352,6 +352,27 @@ fn split() {
     assert_eq!(result.length(), 2);
     assert_eq!(v[0], "Oct");
     assert_eq!(v[1], "Nov");
+
+    let js = JsString::from("Oh brave new world");
+    let re = RegExp::new("\\s", "g");
+    let result = js.split_by_pattern(&re);
+
+    let mut v = Vec::with_capacity(result.length() as usize);
+    result.for_each(&mut |x, _, _| v.push(x));
+
+    assert_eq!(v[0], "Oh");
+    assert_eq!(v[1], "brave");
+    assert_eq!(v[2], "new");
+    assert_eq!(v[3], "world");
+
+    let result = js.split_by_pattern_limit(&re, 2);
+
+    let mut v = Vec::with_capacity(result.length() as usize);
+    result.for_each(&mut |x, _, _| v.push(x));
+
+    assert_eq!(result.length(), 2);
+    assert_eq!(v[0], "Oh");
+    assert_eq!(v[1], "brave");
 }
 
 #[wasm_bindgen_test]