From 2d35a49dd8223cb2f5bdf1e46ba9b88a9d0a268f Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Tue, 29 Oct 2019 18:12:35 +0100
Subject: [PATCH] Inline a couple of `isRef`/`isDict` checks in the
 `ObjectLoader` code

As we've seen in numerous other cases, avoiding unnecessary function calls is never a bad thing (even if the effect is probably tiny here).
---
 src/core/obj.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/core/obj.js b/src/core/obj.js
index 818e65d52..dd844b6da 100644
--- a/src/core/obj.js
+++ b/src/core/obj.js
@@ -2038,13 +2038,13 @@ var FileSpec = (function FileSpecClosure() {
  */
 let ObjectLoader = (function() {
   function mayHaveChildren(value) {
-    return isRef(value) || isDict(value) || Array.isArray(value) ||
-           isStream(value);
+    return (value instanceof Ref) || (value instanceof Dict) ||
+           Array.isArray(value) || isStream(value);
   }
 
   function addChildren(node, nodesToVisit) {
-    if (isDict(node) || isStream(node)) {
-      let dict = isDict(node) ? node : node.dict;
+    if ((node instanceof Dict) || isStream(node)) {
+      let dict = (node instanceof Dict) ? node : node.dict;
       let dictKeys = dict.getKeys();
       for (let i = 0, ii = dictKeys.length; i < ii; i++) {
         let rawValue = dict.getRaw(dictKeys[i]);
@@ -2104,7 +2104,7 @@ let ObjectLoader = (function() {
         let currentNode = nodesToVisit.pop();
 
         // Only references or chunked streams can cause missing data exceptions.
-        if (isRef(currentNode)) {
+        if (currentNode instanceof Ref) {
           // Skip nodes that have already been visited.
           if (this.refSet.has(currentNode)) {
             continue;
@@ -2144,7 +2144,7 @@ let ObjectLoader = (function() {
             let node = nodesToRevisit[i];
             // Remove any reference nodes from the current `RefSet` so they
             // aren't skipped when we revist them.
-            if (isRef(node)) {
+            if (node instanceof Ref) {
               this.refSet.remove(node);
             }
           }