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// Repro from #14794
interface DataSnapshot<X = {}> {
child(path: string): DataSnapshot;
}
interface Snapshot<T> extends DataSnapshot {
child<U extends Extract<keyof T, string>>(path: U): Snapshot<T[U]>;
}
// Repro from 34619
interface A { b: B[] }
interface B { c: C }
interface C { d: D[] }
interface D { e: E[] }
interface E { f: F[] }
interface F { g: G }
interface G { h: H[] }
interface H { i: string }
const x: A = {
b: [
{
c: {
d: [
{
e: [
{
f: [
{
g: {
h: [
{
// i: '',
},
],
},
},
],
},
],
},
],
},
},
],
};
// Repro from 34619
const a1: string[][][][][] = [[[[[42]]]]];
const a2: string[][][][][][][][][][] = [[[[[[[[[[42]]]]]]]]]];
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