From b402eb8e919b095a8dffccbb157d8c11c3b85a25 Mon Sep 17 00:00:00 2001
From: Chinedu Francis Nwafili <frankie.nwafili@gmail.com>
Date: Sun, 11 Dec 2022 12:46:19 -0500
Subject: [PATCH] Introduce "bundler" feature flag

This commit adds a "bundler" feature flag to the lightningcss crate.

We put the "dashmap" and "rayon" dependencies behind this new flag.

Users that do not need the bundler can now disable the feature to save
on compile time.

Related: https://github.com/parcel-bundler/lightningcss/issues/357
---
 Cargo.toml | 19 ++++++++++---------
 src/lib.rs |  1 +
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 1701d6e1..1e0a9f9d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,6 +26,14 @@ name = "lightningcss"
 path = "src/lib.rs"
 crate-type = ["rlib"]
 
+[features]
+default = ["bundler", "grid"]
+browserslist = ["browserslist-rs"]
+bundler = ["dashmap", "rayon"]
+cli = ["clap", "serde_json", "browserslist", "jemallocator"]
+grid = []
+serde = ["smallvec/serde", "cssparser/serde"]
+
 [dependencies]
 serde = { version = "1.0.123", features = ["derive"] }
 cssparser = "0.29.1"
@@ -41,8 +49,8 @@ pathdiff = "0.2.1"
 # CLI deps
 clap = { version = "3.0.6", features = ["derive"], optional = true }
 browserslist-rs = { version = "0.7.0", optional = true }
-rayon = "1.5.1"
-dashmap = "5.0.0"
+rayon = { version = "1.5.1", optional = true }
+dashmap = { version = "5.0.0", optional = true }
 serde_json = { version = "1.0.78", optional = true }
 lightningcss-derive = { version = "1.0.0-alpha.35", path = "./derive" }
 
@@ -56,13 +64,6 @@ assert_fs = "1.0"
 predicates = "2.1"
 serde_json = "1"
 
-[features]
-default = ["grid"]
-browserslist = ["browserslist-rs"]
-cli = ["clap", "serde_json", "browserslist", "jemallocator"]
-grid = []
-serde = ["smallvec/serde", "cssparser/serde"]
-
 [[test]]
 name = "cli_integration_tests"
 path = "tests/cli_integration_tests.rs"
diff --git a/src/lib.rs b/src/lib.rs
index 7dbdfe60..0280f314 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -16,6 +16,7 @@
 
 #![deny(missing_docs)]
 
+#[cfg(feature = "bundler")]
 pub mod bundler;
 mod compat;
 mod context;