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20220330_Vote/Ewide.Web.Entry/wwwroot/lib/xe-utils/isWeakMap.js

@@ -0,0 +1,15 @@
+/* eslint-disable valid-typeof */
+var staticStrUndefined = require('./staticStrUndefined')
+
+/**
+  * 判断是否WeakMap对象
+  *
+  * @param {Object} obj 对象
+  * @return {Boolean}
+ */
+var supportWeakMap = typeof WeakMap !== staticStrUndefined
+function isWeakMap (obj) {
+  return supportWeakMap && obj instanceof WeakMap
+}
+
+module.exports = isWeakMap