perf: use base64-simd (#112)

Author: ahabhgk

Cargo.lock

@@ -13,8 +13,8 @@ repository = "https://github.com/parcel-bundler/source-map"
 rkyv = "0.7.38"
 serde = {version = "1", features = ["derive"], optional = true}
 serde_json = { version = "1", optional = true }
-base64 = { version = "0.13.0", optional = true }
+base64-simd = { version = "0.7", optional = true }
 data-url = { version = "0.1.1", optional = true }
 
 [features]
-json = ["serde", "serde_json", "base64", "data-url"]
+json = ["serde", "serde_json", "base64-simd", "data-url"]

parcel_sourcemap/Cargo.toml

@@ -757,7 +757,7 @@ impl SourceMap {
     #[cfg(feature = "json")]
     pub fn to_data_url(&mut self, source_root: Option<&str>) -> Result<String, SourceMapError> {
         let buf = self.to_json(source_root)?;
-        let b64 = base64::encode(&buf);
+        let b64 = base64_simd::Base64::STANDARD.encode_to_boxed_str(buf.as_bytes());
         Ok(format!(
             "data:application/json;charset=utf-8;base64,{}",
             b64