Add missing getApparentType call

typescript-bot · Apr 30, 2020 · d905ced · d905ced
1 parent 53320f5
commit d905ced
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
@@ -9693,7 +9693,7 @@ namespace ts {
             const indexTypes: Type[] = [];
             let isAnyReadonly = false;
             for (const type of types) {
-                const indexInfo = getIndexInfoOfType(type, kind);
+                const indexInfo = getIndexInfoOfType(getApparentType(type), kind);
                 if (!indexInfo) {
                     return undefined;
                 }