JavaScriptBench
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‎tests/cases/compiler/deeplyNestedCheck.ts‎
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+9Lines changed: 9 additions & 0 deletions b/Collapse file
‎tests/cases/compiler/deeplyNestedCheck.ts‎
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+9Lines changed: 9 additions & 0 deletions
@@ -0,0 +1,9 @@
+// Repro from #14794
+
+interface DataSnapshot<X = {}> {
+  child(path: string): DataSnapshot;
+}
+
+interface Snapshot<T> extends DataSnapshot {
+  child<U extends keyof T>(path: U): Snapshot<T[U]>;
+}