From 055e52793b962ba6c224e8f5958d497f96af361c Mon Sep 17 00:00:00 2001
From: Thibault Duplessis <thibault.duplessis@gmail.com>
Date: Wed, 7 Mar 2018 11:53:09 -0500
Subject: [PATCH] fix typescript compile error

---
 ui/tree/src/tree.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/tree/src/tree.ts b/ui/tree/src/tree.ts
index 934be3fc4b..9444d0acbe 100644
--- a/ui/tree/src/tree.ts
+++ b/ui/tree/src/tree.ts
@@ -132,7 +132,7 @@ export function build(root: Tree.Node): TreeWrapper {
     const newPath = path + node.id,
     existing = nodeAtPathOrNull(newPath);
     if (existing) {
-      (['dests', 'drops', 'clock'] as [keyof Tree.Node]).forEach(key => {
+      (['dests', 'drops', 'clock'] as Array<keyof Tree.Node>).forEach(key => {
         if (defined(node[key]) && !defined(existing[key])) existing[key] = node[key];
       });
       return newPath;