From a9a58a7bb2814947f3fda18a0a6cd45576d0a35d Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Tue, 9 Jan 2018 17:22:21 -0800
Subject: [PATCH 1/2] :arrow_up: tree-sitter to fix an error recovery hang

---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index b59746676..07b723bb4 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "sinon": "1.17.4",
     "temp": "^0.8.3",
     "text-buffer": "13.11.0",
-    "tree-sitter": "^0.8.4",
+    "tree-sitter": "^0.8.6",
     "typescript-simple": "1.0.0",
     "underscore-plus": "^1.6.6",
     "winreg": "^1.2.1",

From 4084922cb4a580db17a6811d47911e074033c0df Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Tue, 9 Jan 2018 17:22:49 -0800
Subject: [PATCH 2/2] Optimize TreeSitterHighlightIterator.seek

---
 src/tree-sitter-language-mode.js | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/src/tree-sitter-language-mode.js b/src/tree-sitter-language-mode.js
index 41c87ba00..af4bbdc1a 100644
--- a/src/tree-sitter-language-mode.js
+++ b/src/tree-sitter-language-mode.js
@@ -361,9 +361,8 @@ class TreeSitterHighlightIterator {
 
     var node = this.layer.document.rootNode
     var childIndex = -1
-    var done = false
     var nodeContainsTarget = true
-    do {
+    for (;;) {
       this.currentNode = node
       this.currentChildIndex = childIndex
       if (!nodeContainsTarget) break
@@ -380,18 +379,14 @@ class TreeSitterHighlightIterator {
         }
       }
 
-      done = true
-      for (var i = 0, {children} = node, childCount = children.length; i < childCount; i++) {
-        const child = children[i]
-        if (child.endIndex > this.currentIndex) {
-          node = child
-          childIndex = i
-          done = false
-          if (child.startIndex > this.currentIndex) nodeContainsTarget = false
-          break
-        }
+      node = node.firstChildForIndex(this.currentIndex)
+      if (node) {
+        if (node.startIndex > this.currentIndex) nodeContainsTarget = false
+        childIndex = node.childIndex
+      } else {
+        break
       }
-    } while (!done)
+    }
 
     return containingTags
   }