From 6daa3d18a80dacfdd8a637d5eff380aacb10ef80 Mon Sep 17 00:00:00 2001
From: Tatsuyuki Ishi <ishitatsuyuki@gmail.com>
Date: Fri, 29 Jul 2022 23:19:28 +0900
Subject: [PATCH] Convert Big[Ui,I]nt64Array bindings to use [u/i]64 (#3011)

Using BigInt as the macro parameters leads to absurd signatures like
slices of BigInt objects (can't exist). Instead, just use the numeric
types. bindgen already converts them to bigint when appropriate.

Closes: https://github.com/rustwasm/wasm-bindgen/issues/3009
Fixes: d6d056cd ("Add math-related intrinsics/functions for `JsValue`s (#2629)")
---
 crates/js-sys/src/lib.rs          |  4 ++--
 crates/js-sys/tests/wasm/Array.js |  5 +++--
 crates/js-sys/tests/wasm/Array.rs | 18 ++++++++++++++++++
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/crates/js-sys/src/lib.rs b/crates/js-sys/src/lib.rs
index e0b1dd25a27..1f13a3fdcaf 100644
--- a/crates/js-sys/src/lib.rs
+++ b/crates/js-sys/src/lib.rs
@@ -5854,9 +5854,9 @@ arrays! {
 
     /// `BigInt64Array()`
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt64Array
-    BigInt64Array: BigInt,
+    BigInt64Array: i64,
 
     /// `BigUint64Array()`
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigUint64Array
-    BigUint64Array: BigInt,
+    BigUint64Array: u64,
 }
diff --git a/crates/js-sys/tests/wasm/Array.js b/crates/js-sys/tests/wasm/Array.js
index 8810bd9db88..f4d6ab71382 100644
--- a/crates/js-sys/tests/wasm/Array.js
+++ b/crates/js-sys/tests/wasm/Array.js
@@ -1,6 +1,7 @@
 // Used for `Array.rs` tests
-exports.populate_array =  function(arr, start, len) {
+exports.populate_array = function(arr, start, len) {
+  var isBigInt = typeof(arr[0]) === "bigint";
   for (i = 0; i < len; i++) {
-    arr[i] = start + i;
+    arr[i] = isBigInt ? BigInt(start + i) : start + i;
   }
 };
diff --git a/crates/js-sys/tests/wasm/Array.rs b/crates/js-sys/tests/wasm/Array.rs
index 9554f39f711..e498c2cc0a9 100644
--- a/crates/js-sys/tests/wasm/Array.rs
+++ b/crates/js-sys/tests/wasm/Array.rs
@@ -594,6 +594,15 @@ fn Int32Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Int32Array::view_mut_raw, i32::from, JsValue::from);
 }
 
+#[wasm_bindgen_test]
+fn BigInt64Array_view_mut_raw() {
+    test_array_view_mut_raw(
+        js_sys::BigInt64Array::view_mut_raw,
+        i64::from,
+        JsValue::from,
+    );
+}
+
 #[wasm_bindgen_test]
 fn Uint8Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Uint8Array::view_mut_raw, u8::from, JsValue::from);
@@ -618,6 +627,15 @@ fn Uint32Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Uint32Array::view_mut_raw, u32::from, JsValue::from);
 }
 
+#[wasm_bindgen_test]
+fn BigUint64Array_view_mut_raw() {
+    test_array_view_mut_raw(
+        js_sys::BigUint64Array::view_mut_raw,
+        u64::from,
+        JsValue::from,
+    );
+}
+
 #[wasm_bindgen_test]
 fn Float32Array_view_mut_raw() {
     test_array_view_mut_raw(js_sys::Float32Array::view_mut_raw, f32::from, JsValue::from);