+use std::hash::BuildHasherDefault;
+
pub use rustc_hash::{FxHasher, FxHashMap, FxHashSet};
+
+pub type FxIndexMap<K, V> = indexmap::IndexMap<K, V, BuildHasherDefault<FxHasher>>;
+pub type FxIndexSet<V> = indexmap::IndexSet<V, BuildHasherDefault<FxHasher>>;