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js-sys: add Object.fromEntries

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This commit is contained in:
Kevin Gibbons 2019-04-13 21:08:07 -07:00
parent 7f4f9ce136
commit a32d2553fc
2 changed files with 26 additions and 0 deletions
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7
crates/js-sys/src/lib.rs
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@ -2176,6 +2176,13 @@ extern "C" {
#[wasm_bindgen(static_method_of = Object)]
pub fn freeze(value: &Object) -> Object;
/// The Object.fromEntries() method transforms a list of key-value pairs
/// into an object.
///
/// [MDN documentation](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/fromEntries)
#[wasm_bindgen(static_method_of = Object, catch, js_name = fromEntries)]
pub fn from_entries(iterable: &JsValue) -> Result<Object, JsValue>;
/// The Object.getOwnPropertyDescriptor() method returns a
/// property descriptor for an own property (that is, one directly
/// present on an object and not in the object's prototype chain)

19
crates/js-sys/tests/wasm/Object.rs
View File

@ -123,6 +123,25 @@ fn entries() {
});
}
#[wasm_bindgen_test]
fn from_entries() {
let array = Array::new();
let entry_one = Array::new();
let entry_two = Array::new();
entry_one.push(&"foo".into());
entry_one.push(&"bar".into());
entry_two.push(&"baz".into());
entry_two.push(&42.into());
let object = Object::from_entries(&array).unwrap();
assert_eq!(Reflect::get(object.as_ref(), &"foo".into()).unwrap(), "bar");
assert_eq!(Reflect::get(object.as_ref(), &"baz".into()).unwrap(), 42);
let not_iterable = Object::new();
let error = Object::from_entries(&not_iterable).unwrap_err();
assert!(error.is_instance_of::<TypeError>());
}
#[wasm_bindgen_test]
fn get_own_property_descriptor() {
let foo = foo_42();