From f0444d1614082deed18c651b91378d5d695c9a4c Mon Sep 17 00:00:00 2001
From: Nick Fitzgerald <fitzgen@gmail.com>
Date: Fri, 10 Aug 2018 11:20:06 -0700
Subject: [PATCH] js-sys: Add bindings for `Intl.Collator`

---
 crates/js-sys/src/lib.rs         | 44 ++++++++++++++++++++++++++++++++
 crates/js-sys/tests/wasm/Intl.rs | 15 ++++++++++-
 2 files changed, 58 insertions(+), 1 deletion(-)

diff --git a/crates/js-sys/src/lib.rs b/crates/js-sys/src/lib.rs
index 1c4639d8..6cb8c9d4 100644
--- a/crates/js-sys/src/lib.rs
+++ b/crates/js-sys/src/lib.rs
@@ -3142,6 +3142,50 @@ pub mod Intl {
         #[wasm_bindgen(js_name = getCanonicalLocales, js_namespace = Intl)]
         pub fn get_canonical_locales(s: &JsValue) -> Array;
     }
+
+    // Intl.Collator
+    #[wasm_bindgen]
+    extern "C" {
+        /// The Intl.Collator object is a constructor for collators, objects
+        /// that enable language sensitive string comparison.
+        ///
+        /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator
+        #[wasm_bindgen(js_namespace = Intl)]
+        #[derive(Clone, Debug)]
+        pub type Collator;
+
+        /// The Intl.Collator object is a constructor for collators, objects
+        /// that enable language sensitive string comparison.
+        ///
+        /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator
+        #[wasm_bindgen(constructor, js_namespace = Intl)]
+        pub fn new(locales: &Array, options: &Object) -> Collator;
+
+        /// The Intl.Collator.prototype.compare property returns a function that
+        /// compares two strings according to the sort order of this Collator
+        /// object.
+        ///
+        /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator/compare
+        #[wasm_bindgen(method, getter, js_class = "Intl.Collator")]
+        pub fn compare(this: &Collator) -> Function;
+
+        /// The Intl.Collator.prototype.resolvedOptions() method returns a new
+        /// object with properties reflecting the locale and collation options
+        /// computed during initialization of this Collator object.
+        ///
+        /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator/resolvedOptions
+        #[wasm_bindgen(method, js_namespace = Intl, js_name = resolvedOptions)]
+        pub fn resolved_options(this: &Collator) -> Object;
+
+        /// The Intl.Collator.supportedLocalesOf() method returns an array
+        /// containing those of the provided locales that are supported in
+        /// collation without having to fall back to the runtime's default
+        /// locale.
+        ///
+        /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Collator/supportedLocalesOf
+        #[wasm_bindgen(static_method_of = Collator, js_namespace = Intl, js_name = supportedLocalesOf)]
+        pub fn supported_locales_of(locales: &Array, options: &Object) -> Array;
+    }
 }
 
 // Promise
diff --git a/crates/js-sys/tests/wasm/Intl.rs b/crates/js-sys/tests/wasm/Intl.rs
index a739656b..e037fdfd 100644
--- a/crates/js-sys/tests/wasm/Intl.rs
+++ b/crates/js-sys/tests/wasm/Intl.rs
@@ -1,4 +1,4 @@
-use wasm_bindgen::JsValue;
+use wasm_bindgen::{JsCast, JsValue};
 use wasm_bindgen_test::*;
 use js_sys::*;
 
@@ -23,3 +23,16 @@ fn get_canonical_locales() {
         assert_eq!(l, "en-US");
     });
 }
+
+#[wasm_bindgen_test]
+fn collator() {
+    let locales = Array::of1(&JsValue::from("en-US"));
+    let opts = Object::new();
+
+    let c = Intl::Collator::new(&locales, &opts);
+    assert!(c.compare().is_instance_of::<Function>());
+    assert!(c.resolved_options().is_instance_of::<Object>());
+
+    let a = Intl::Collator::supported_locales_of(&locales, &opts);
+    assert!(a.is_instance_of::<Array>());
+}