[Tests] safeset is also a Set

Author: ljharb

package.json

@@ -56,6 +56,7 @@
 		"nyc": "^10.3.2",
 		"object-inspect": "^1.13.1",
 		"safe-publish-latest": "^2.0.0",
+		"safeset": "^1.0.1",
 		"tape": "^5.7.5",
 		"typescript": "next"
 	},

test/index.js

@@ -3,6 +3,7 @@
 var test = require('tape');
 var debug = require('object-inspect');
 var forEach = require('for-each');
+var SafeSet = require('safeset');
 
 var isSet = require('..');
 
@@ -57,3 +58,10 @@ test('WeakSets', { skip: typeof WeakSet !== 'function' }, function (t) {
 
 	t.end();
 });
+
+test('SafeSet', function (t) {
+	var ss = new SafeSet();
+	t.equal(isSet(ss), true, debug(ss) + ' is a Set');
+
+	t.end();
+});