only run on profiler feature

Author: jasonwilliams

boa/Cargo.toml

@@ -10,6 +10,9 @@ license = "Unlicense/MIT"
 exclude = ["../.vscode/*", "../Dockerfile", "../Makefile", "../.editorConfig"]
 edition = "2018"
 
+[features]
+profiler = ["measureme", "once_cell"]
+
 [dependencies]
 gc = { version = "0.3.5", features = ["derive"] }
 serde_json = "1.0.53"
@@ -21,9 +24,9 @@ num-bigint = { version = "0.2.6", features = ["serde"] }
 
 # Optional Dependencies
 serde = { version = "1.0.110", features = ["derive"], optional = true }
+measureme = { version = "0.7.1", optional = true }
+once_cell = { version = "1.4.0", optional = true }
 bitflags = "1.2.1"
-measureme = { version = "0.7.1" }
-once_cell = "1.4.0"
 
 [dev-dependencies]
 criterion = "0.3.2"

boa/src/profiler.rs

@@ -1,8 +1,11 @@
 #![allow(missing_copy_implementations, missing_debug_implementations)]
 
+#[cfg(feature = "profiler")]
 use measureme::{EventId, Profiler, TimingGuard};
+#[cfg(feature = "profiler")]
 use once_cell::sync::OnceCell;
 use std::fmt::{self, Debug};
+#[cfg(feature = "profiler")]
 use std::{
     path::Path,
     thread::{current, ThreadId},
@@ -11,14 +14,17 @@ use std::{
 /// MmapSerializatioSink is faster on macOS and Linux
 /// but FileSerializationSink is faster on Windows
 #[cfg(not(windows))]
+#[cfg(feature = "profiler")]
 type SerializationSink = measureme::MmapSerializationSink;
 #[cfg(windows)]
+#[cfg(feature = "profiler")]
 type SerializationSink = measureme::FileSerializationSink;
 #[cfg(feature = "profiler")]
 pub struct BoaProfiler {
     profiler: Profiler<SerializationSink>,
 }
 
+#[cfg(feature = "profiler")]
 pub static mut INSTANCE: OnceCell<BoaProfiler> = OnceCell::new();
 
 #[cfg(feature = "profiler")]