diff --git a/src/js.rs b/src/js.rs index 6ece49ac..6de22dfd 100644 --- a/src/js.rs +++ b/src/js.rs @@ -367,6 +367,14 @@ extern { extern { pub type Number; + /// The `Number` JavaScript object is a wrapper object allowing + /// you to work with numerical values. A `Number` object is + /// created using the `Number()` constructor. + /// + /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number + #[wasm_bindgen(constructor)] + pub fn new(value: JsValue) -> Number; + /// The toLocaleString() method returns a string with a language sensitive /// representation of this number. /// diff --git a/tests/all/js_globals/Number.rs b/tests/all/js_globals/Number.rs index 362832e4..80f81c22 100644 --- a/tests/all/js_globals/Number.rs +++ b/tests/all/js_globals/Number.rs @@ -2,6 +2,32 @@ use super::project; +#[test] +fn new() { + project() + .file("src/lib.rs", r#" + #![feature(proc_macro, wasm_custom_section)] + + extern crate wasm_bindgen; + use wasm_bindgen::prelude::*; + use wasm_bindgen::js::Number; + + #[wasm_bindgen] + pub fn new_number() -> Number { + Number::new(JsValue::from(42)) + } + "#) + .file("test.ts", r#" + import * as assert from "assert"; + import * as wasm from "./out"; + + export function test() { + assert.equal(typeof wasm.new_number(), "object"); + assert.equal(wasm.new_number(), 42); + } + "#) + .test() +} #[test] fn to_locale_string() {