util: add type check function for BigIntObject

PR-URL: #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>

Author: targos

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 [
 [newNumber(),'isNumberObject'],
 [newString(),'isStringObject'],
 [Object(Symbol()),'isSymbolObject'],
+[Object(BigInt(0)),'isBigIntObject'],
 [newError(),'isNativeError'],
 [newRegExp()],
 [asyncfunction(){},'isAsyncFunction'],