Relax proper implementation detection

medikoo · Nov 10, 2015 · 7356523 · 7356523
1 parent 905cac5
commit 7356523
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/is-implemented.js b/is-implemented.js
@@ -3,13 +3,13 @@
 module.exports = function () {
 	var map, iterator, result;
 	if (typeof Map !== 'function') return false;
-	if (String(Map.prototype) !== '[object Map]') return false;
 	try {
 		// WebKit doesn't support arguments and crashes
 		map = new Map([['raz', 'one'], ['dwa', 'two'], ['trzy', 'three']]);
 	} catch (e) {
 		return false;
 	}
+	if (String(map) !== '[object Map]') return false;
 	if (map.size !== 3) return false;
 	if (typeof map.clear !== 'function') return false;
 	if (typeof map.delete !== 'function') return false;