From bcb29063c1c2d01f105a4381ee2b7fe8e4d79a43 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Mon, 16 Oct 2017 09:09:08 +0200
Subject: [PATCH 1/2] Polyfill `Object.values` and `Array.prototype.includes`
 using core-js

See https://github.com/zloirock/core-js#stage-4-proposals.
---
 src/shared/compatibility.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/shared/compatibility.js b/src/shared/compatibility.js
index b7d587349..9eb9b0ae6 100644
--- a/src/shared/compatibility.js
+++ b/src/shared/compatibility.js
@@ -839,6 +839,25 @@ PDFJS.compatibilityChecked = true;
   };
 })();
 
+// Provides support for Object.values in legacy browsers.
+// Support: IE.
+(function checkObjectValues() {
+  if (Object.values) {
+    return;
+  }
+  Object.values = require('core-js/fn/object/values');
+})();
+
+// Provides support for Array.prototype.includes in legacy browsers.
+// Support: IE.
+(function checkArrayIncludes() {
+  if (Array.prototype.includes) {
+    return;
+  }
+  Array.prototype.includes = require('core-js/fn/array/includes');
+})();
+
+
 // Provides support for Number.isNaN in legacy browsers.
 // Support: IE.
 (function checkNumberIsNaN() {

From b5794bb26b76a0cc3c87b10979e5477514999095 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sun, 15 Oct 2017 18:15:37 +0200
Subject: [PATCH 2/2] Simplify the check, and remove the warning, for the
 `nativeImageDecoderSupport` API parameter

As discussed in PR 8982.
---
 src/display/api.js | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/display/api.js b/src/display/api.js
index 0f2fdf01a..f8baabe32 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -223,13 +223,9 @@ function getDocument(src) {
   params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
   params.ignoreErrors = params.stopAtErrors !== true;
 
-  params.nativeImageDecoderSupport = params.nativeImageDecoderSupport ||
-                                     NativeImageDecoding.DECODE;
-  if (params.nativeImageDecoderSupport !== NativeImageDecoding.DECODE &&
-      params.nativeImageDecoderSupport !== NativeImageDecoding.NONE &&
-      params.nativeImageDecoderSupport !== NativeImageDecoding.DISPLAY) {
-    warn('Invalid parameter nativeImageDecoderSupport: ' +
-      'need a state of enum {NativeImageDecoding}');
+  const nativeImageDecoderValues = Object.values(NativeImageDecoding);
+  if (params.nativeImageDecoderSupport === undefined ||
+      !nativeImageDecoderValues.includes(params.nativeImageDecoderSupport)) {
     params.nativeImageDecoderSupport = NativeImageDecoding.DECODE;
   }