[Fix] ignore cause in node v16.9 and v16.10 where it has a bug

Note, https://npmjs.com/error-cause fixes this bug

Author: ljharb

index.js

@@ -187,7 +187,7 @@ module.exports = function inspect_(obj, options, depth, seen) {
     }
     if (isError(obj)) {
         var parts = arrObjKeys(obj, inspect);
-        if ('cause' in obj && !isEnumerable.call(obj, 'cause')) {
+        if (!('cause' in Error.prototype) && 'cause' in obj && !isEnumerable.call(obj, 'cause')) {
             return '{ [' + String(obj) + '] ' + $join.call($concat.call('[cause]: ' + inspect(obj.cause), parts), ', ') + ' }';
         }
         if (parts.length === 0) { return '[' + String(obj) + ']'; }

test/err.js

@@ -40,9 +40,9 @@ test('type error', function (t) {
         '{ [TypeError] foo: 555, bar: [ 1, 2, 3 ] }',
         '{ [TypeError: tuv] baz: 555 }',
         '{ [SyntaxError: whoa] message: \'whoa\', \'a-b\': 5 }',
-        '{ [Error: foo] [cause]: \'bar\' }',
-        '{ [Error: foo] [cause]: \'bar\', foo: \'bar\' }',
-        '{ [Error: foo] [cause]: undefined }',
+        'cause' in Error.prototype ? '[Error: foo]' : '{ [Error: foo] [cause]: \'bar\' }',
+        '{ [Error: foo] ' + ('cause' in Error.prototype ? '' : '[cause]: \'bar\', ') + 'foo: \'bar\' }',
+        'cause' in Error.prototype ? '[Error: foo]' : '{ [Error: foo] [cause]: undefined }',
         '{ [Error: foo] cause: \'bar\' }'
     ].join(', ') + ' ]');
 });