From 2e495dd5f5ec716c902d8dba7a722dd654ff36dd Mon Sep 17 00:00:00 2001
From: Brandon Casey <2381475+brandonocasey@users.noreply.github.com>
Date: Mon, 29 Jul 2019 16:40:29 -0400
Subject: [PATCH] perf: save ~10ms on `player.src` call (#6141)

Don't use a case-insensitive regex for getting the extname. Don't try to guess the type if we're provided with one.
---
 src/js/utils/filter-source.js | 8 +++++---
 src/js/utils/url.js           | 2 +-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/js/utils/filter-source.js b/src/js/utils/filter-source.js
index 050546c3f..7cfe02120 100644
--- a/src/js/utils/filter-source.js
+++ b/src/js/utils/filter-source.js
@@ -56,10 +56,12 @@ const filterSource = function(src) {
  *        src Object with known type
  */
 function fixSource(src) {
-  const mimetype = getMimetype(src.src);
+  if (!src.type) {
+    const mimetype = getMimetype(src.src);
 
-  if (!src.type && mimetype) {
-    src.type = mimetype;
+    if (mimetype) {
+      src.type = mimetype;
+    }
   }
 
   return src;
diff --git a/src/js/utils/url.js b/src/js/utils/url.js
index 176d32964..6d542027a 100644
--- a/src/js/utils/url.js
+++ b/src/js/utils/url.js
@@ -132,7 +132,7 @@ export const getAbsoluteURL = function(url) {
  */
 export const getFileExtension = function(path) {
   if (typeof path === 'string') {
-    const splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/i;
+    const splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/;
     const pathParts = splitPathRe.exec(path);
 
     if (pathParts) {