//! Type definitions for maps and sets used by the `wasmparser` crate.
//!
//! This module contains type definitions for [`Map`], [`Set`], [`IndexMap`], and [`IndexSet`].
//! These types are thin-wrappers around either hash-map based or B-tree-map based data structures.
//! Users can strictly use the `btree`-map based variants by enabling the `no-hash-maps` crate feature.
//!
//! - [`Map`]: Either backed by [`hashbrown::HashMap`] or Rust's [`BTreeMap`].
//! - [`Set`]: Either backed by [`hashbrown::HashSet`] or Rust's [`BTreeSet`].
//! - [`IndexMap`]: Either backed by [`indexmap::IndexMap`] or a custom implementation based on Rust's [`BTreeMap`].
//! - [`IndexSet`]: Either backed by [`indexmap::IndexSet`] or a custom implementation based on Rust's [`BTreeMap`].
//!
//! For the hash-map based type definitions the hash algorithm type parameter is fixed.
//!
//! [`BTreeMap`]: alloc::collections::BTreeMap
//! [`BTreeSet`]: alloc::collections::BTreeSet
// Which collections will be used feature matrix:
//
// `hash-collections` | `prefer-btree-collections` | usage
// ------------------ | -------------------------- | -------------------
// false | false | btree
// true | false | hash
// false | true | btree
// true | true | btree
pub use ;