Check hasOwnProperty before copying property

2026-05-16 07:13:45 -05:00 · 2017-11-20 18:43:14 -08:00
parent 9cbe4eb614
commit 71e07df817
1 changed files with 3 additions and 1 deletions
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -528,7 +528,9 @@ namespace ts.server {
                // raw is now fixed and ready
                this.safelist = raw.typesMap;
                for (const key in raw.simpleMap) {
-                    this.legacySafelist[key] = raw.simpleMap[key].toLowerCase();
+                    if (raw.simpleMap.hasOwnProperty(key)) {
+                        this.legacySafelist[key] = raw.simpleMap[key].toLowerCase();
+                    }
                }
            }
            catch (e) {