util: add type check function for BigIntObject

PR-URL: https://github.com/nodejs/node/pull/19989
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matheus Marchini <matheus@sthima.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

src/node_types.cc

@@ -13,6 +13,7 @@ namespace {
   V(External)                                                                 \
   V(Date)                                                                     \
   V(ArgumentsObject)                                                          \
+  V(BigIntObject)                                                             \
   V(BooleanObject)                                                            \
   V(NumberObject)                                                             \
   V(StringObject)                                                             \

test/.eslintrc.yaml

@@ -49,6 +49,7 @@ rules:
 # Global scoped methods and vars
 globals:
   WebAssembly: false
+  BigInt: false
   BigInt64Array: false
   BigUint64Array: false
   SharedArrayBuffer: false

test/parallel/test-util-types.js

@@ -20,6 +20,7 @@ for (const [ value, _method ] of [
   [ new Number(), 'isNumberObject' ],
   [ new String(), 'isStringObject' ],
   [ Object(Symbol()), 'isSymbolObject' ],
+  [ Object(BigInt(0)), 'isBigIntObject' ],
   [ new Error(), 'isNativeError' ],
   [ new RegExp() ],
   [ async function() {}, 'isAsyncFunction' ],