chore(bench): use mimalloc as global allocator in bench crate (#8844)

IWANABETHATGUY · IWANABETHATGUY · commit e6056cf0b8d7 · 2026-03-22T09:02:00.000Z
The bench crate was using the system allocator instead of mimalloc, making benchmark results unrepresentative of production performance. Adds `mimalloc-safe` as a dependency and sets `#[global_allocator]` so benchmarks match the actual NAPI bindings allocator configuration.
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/crates/bench/Cargo.toml b/crates/bench/Cargo.toml
@@ -32,3 +32,4 @@ codspeed = ["criterion2/codspeed"]
 
 [dev-dependencies]
 rustc-hash = { workspace = true }
+mimalloc-safe = { workspace = true }
diff --git a/crates/bench/benches/bench.rs b/crates/bench/benches/bench.rs
@@ -1,3 +1,6 @@
+#[global_allocator]
+static ALLOC: mimalloc_safe::MiMalloc = mimalloc_safe::MiMalloc;
+
 use bench::{BenchMode, DeriveOptions, bench_preset, rome_ts_preset, run_bench_group};
 use criterion::{Criterion, criterion_group, criterion_main};
 use rolldown::{BundlerOptions, ModuleType};

Original file line number	Diff line number	Diff line change
`@@ -32,3 +32,4 @@ codspeed = ["criterion2/codspeed"]`
`32`	`32`
`33`	`33`	`[dev-dependencies]`
`34`	`34`	`rustc-hash = { workspace = true }`
	`35`	`+mimalloc-safe = { workspace = true }`