perf(common): Use fxhash everywhere (#3985)

Description:
 - To avoid a breaking change, I created a cargo feature that can be used to change hasher.
 - This leads to about 8% perf improvements on m1 max macbook pro 64gb

Cargo.lock

@@ -3752,6 +3752,7 @@ version = "0.5.1"
 dependencies = [
  "fastmem",
  "mimalloc-rust",
+ "swc_common",
 ]
 
 [[package]]

crates/swc_common/Cargo.toml

@@ -17,6 +17,7 @@ concurrent = ["parking_lot"]
 debug = []
 default = []
 diagnostic-serde = []
+perf = ["parking_lot"]
 plugin-base = ["anyhow", "rkyv-impl", "diagnostic-serde"]
 plugin-mode = ["plugin-base"]
 plugin-rt = ["plugin-base"]

crates/swc_common/src/collections.rs

@@ -1,5 +1,27 @@
-use std::collections::{HashMap, HashSet};
+#[cfg(not(feature = "perf"))]
+pub use self::ahash::*;
+#[cfg(feature = "perf")]
+pub use self::fxhash::*;
 
-pub type AHashMap<K, V> = HashMap<K, V, ahash::RandomState>;
+#[cfg(feature = "perf")]
+mod fxhash {
+    use std::{
+        collections::{HashMap, HashSet},
+        hash::BuildHasherDefault,
+    };
 
-pub type AHashSet<V> = HashSet<V, ahash::RandomState>;
+    use rustc_hash::FxHasher;
+
+    pub type AHashMap<K, V> = HashMap<K, V, BuildHasherDefault<FxHasher>>;
+
+    pub type AHashSet<V> = HashSet<V, BuildHasherDefault<FxHasher>>;
+}
+
+#[cfg(not(feature = "perf"))]
+mod ahash {
+    use std::collections::{HashMap, HashSet};
+
+    pub type AHashMap<K, V> = HashMap<K, V, ahash::RandomState>;
+
+    pub type AHashSet<V> = HashSet<V, ahash::RandomState>;
+}

crates/swc_common/src/lib.rs

@@ -26,6 +26,11 @@
 //! ## `plugin-mode`
 //!
 //! Allows replacing operations related to thread-local variables with a trait.
+//!
+//!
+//! ## `perf`
+//!
+//! Use `fxhash` instead of `ahash` for `AHashMap` and `AHashSet`.
 #![deny(clippy::all)]
 #![deny(unused)]
 #![cfg_attr(docsrs, feature(doc_cfg))]

crates/swc_node_base/Cargo.toml

@@ -12,6 +12,7 @@ version = "0.5.1"
 
 [dependencies]
 fastmem = {version = "0.1.0", path = "../fastmem", features = ["enable"]}
+swc_common = {version = "0.17.14", path = "../swc_common", features = ["perf"]}
 
 [target.'cfg(not(all(target_os = "linux", target_arch = "aarch64", target_env = "musl")))'.dependencies]
 mimalloc-rust = "=0.1.5"