diff --git a/src/js.rs b/src/js.rs index f6a110d7..1e26d59f 100644 --- a/src/js.rs +++ b/src/js.rs @@ -1065,6 +1065,13 @@ extern "C" { #[wasm_bindgen(method, js_class = "String")] pub fn substr(this: &JsString, start: i32, length: i32) -> JsString; + /// The toLowerCase() method returns the calling string value + /// converted to lower case. + /// + /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toLowerCase + #[wasm_bindgen(method, js_class = "String", js_name = toLowerCase)] + pub fn to_lower_case(this: &JsString) -> JsString; + /// The toString() method returns a string representing the specified object. /// /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toString diff --git a/tests/all/js_globals/JsString.rs b/tests/all/js_globals/JsString.rs index 28ca0943..b6656bc5 100644 --- a/tests/all/js_globals/JsString.rs +++ b/tests/all/js_globals/JsString.rs @@ -396,6 +396,32 @@ fn substr() { .test() } +#[test] +fn to_lower_case() { + 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 string_to_lower_case(this: &js::JsString) -> js::JsString { + this.to_lower_case() + } + "#) + .file("test.ts", r#" + import * as assert from "assert"; + import * as wasm from "./out"; + + export function test() { + assert.equal(wasm.string_to_lower_case("Mozilla"), "mozilla"); + } + "#) + .test() +} + #[test] fn to_string() { project()