#[cfg(feature = "test-support")]pub type HashMap<K, V> = FxHashMap<K, V>; #[cfg(feature = "test-support")]pub type HashSet<T> = FxHashSet<T>; #[cfg(feature = "test-support")]pub type IndexMap<K, V> = indexmap::IndexMap<K, V, rustc_hash::FxBuildHasher>; #[cfg(feature = "test-support")]pub type IndexSet<T> = indexmap::IndexSet<T, rustc_hash::FxBuildHasher>; #[cfg(not(feature = "test-support"))]pub type HashMap<K, V> = std::collections::HashMap<K, V>; #[cfg(not(feature = "test-support"))]pub type HashSet<T> = std::collections::HashSet<T>; #[cfg(not(feature = "test-support"))]pub type IndexMap<K, V> = indexmap::IndexMap<K, V>; #[cfg(not(feature = "test-support"))]pub type IndexSet<T> = indexmap::IndexSet<T>; pub use rustc_hash::FxHasher;pub use rustc_hash::{FxHashMap, FxHashSet};pub use std::collections::*;