1 files changed, 2 insertions, 4 deletions
diff --git a/node_modules/is-observable/index.js b/node_modules/is-observable/index.js
index 77f399458..2ee881996 100644
--- a/node_modules/is-observable/index.js
+++ b/node_modules/is-observable/index.js
@@ -1,6 +1,4 @@
 'use strict';
-var symbolObservable = require('symbol-observable');
+const symbolObservable = require('symbol-observable').default;
 
-module.exports = function (fn) {
-	return Boolean(fn && fn[symbolObservable]);
-};
+module.exports = value => Boolean(value && value[symbolObservable] && value === value[symbolObservable]());