Convert Big[Ui,I]nt64Array bindings to use [u/i]64

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: rustwasm#3009
Fixes: d6d056c ("Add math-related intrinsics/functions for `JsValue`s (rustwasm#2629)")

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,
 }

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;
   }
 };

crates/js-sys/tests/wasm/Array.rs

@@ -594,6 +594,11 @@ 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 +623,11 @@ 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);