bugfix: 报错

3 years ago · b6dc01917e
1 changed files with 3 additions and 3 deletions
--- a/dist/fix/fix.js
+++ b/dist/fix/fix.js
@ -579,7 +579,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
                // remove self from vm's watcher list
                // this is a somewhat expensive operation so we skip it
                // if the vm is being destroyed.
-                remove(this.vm._watchers, this);
+                remove(this.vm && this.vm._watchers, this);
                var i = this.deps.length;
                while (i--) {
                    this.deps[i].removeSub(this);