More lint

Author: OneDrive Build

src/compiler/sourcemap.ts

@@ -267,10 +267,10 @@ namespace ts {
         function serializeMappings(): void {
             const segments: string[] = [];
             for (let i = 0, len = mappingCharCodes.length; i < len; i += 1024) {
-                segments.push(String.fromCharCode.apply(null, mappingCharCodes.slice(i, i + 1024)));
+                segments.push(String.fromCharCode.apply(undefined, mappingCharCodes.slice(i, i + 1024)));
             }
             mappingCharCodes.length = 0;
-            mappings += segments.join('');
+            mappings += segments.join("");
         }
 
         function toJSON(): RawSourceMap {