fix(HLS): Avoid variable substitution if no variables (shaka-project#…

…5269) With this change, we improve performance on very large playlists.
theodab · Jun 8, 2023 · 5a5a7ac · 5a5a7ac
1 parent 9059944
commit 5a5a7ac
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/hls/hls_parser.js b/lib/hls/hls_parser.js
@@ -3208,6 +3208,9 @@ shaka.hls.HlsParser = class {
    * @private
    */
   variableSubstitution_(uri, variables) {
+    if (!variables.size) {
+      return uri;
+    }
     let newUri = String(uri).replace(/%7B/g, '{').replace(/%7D/g, '}');
 
     const uriVariables = newUri.match(/{\$\w*}/g);