chore(es/minifier): Add full benchmark for .minify() (#4341)

crates/swc/Cargo.toml

@@ -116,6 +116,10 @@ name = "transform"
 harness = false
 name = "bugs"
 
+[[bench]]
+harness = false
+name = "minify"
+
 [[bench]]
 harness = false
 name = "typescript"

crates/swc/benches/minify.rs

@@ -0,0 +1,84 @@
+/// Explicit extern crate to use allocator.
+extern crate swc_node_base;
+
+use std::{path::PathBuf, sync::Arc};
+
+use criterion::{black_box, criterion_group, criterion_main, Bencher, Criterion};
+use swc::{config::JsMinifyOptions, try_with_handler};
+use swc_common::{FilePathMapping, SourceMap};
+
+fn mk() -> swc::Compiler {
+    let cm = Arc::new(SourceMap::new(FilePathMapping::empty()));
+
+    swc::Compiler::new(cm)
+}
+
+fn bench_minify(b: &mut Bencher, filename: &str) {
+    let c = mk();
+
+    c.run(|| {
+        b.iter(|| {
+            let fm = black_box(
+                c.cm.load_file(
+                    &PathBuf::from("..")
+                        .join("swc_ecma_minifier")
+                        .join("benches")
+                        .join("full")
+                        .join(filename),
+                )
+                .unwrap(),
+            );
+
+            let res = try_with_handler(c.cm.clone(), Default::default(), |handler| {
+                c.minify(
+                    fm,
+                    handler,
+                    &JsMinifyOptions {
+                        compress: true.into(),
+                        mangle: true.into(),
+                        format: Default::default(),
+                        ecma: Default::default(),
+                        keep_classnames: Default::default(),
+                        keep_fnames: Default::default(),
+                        module: Default::default(),
+                        safari10: Default::default(),
+                        toplevel: Default::default(),
+                        source_map: Default::default(),
+                        output_path: Default::default(),
+                        inline_sources_content: Default::default(),
+                    },
+                )
+            })
+            .unwrap();
+
+            black_box(res);
+        })
+    });
+}
+
+fn files_group(c: &mut Criterion) {
+    let mut group = c.benchmark_group("libraries");
+    group.sample_size(10);
+
+    let mut bench_file = |name: &str| {
+        group.bench_function(name, |b| {
+            bench_minify(b, &format!("{}.js", name));
+        });
+    };
+
+    bench_file("antd");
+    bench_file("d3");
+    bench_file("echarts");
+    bench_file("jquery");
+    bench_file("lodash");
+    bench_file("moment");
+    bench_file("react");
+    bench_file("terser");
+    bench_file("three");
+    bench_file("typescript");
+    bench_file("victory");
+    bench_file("vue");
+}
+
+criterion_group!(benches, files_group);
+criterion_main!(benches);

crates/swc_ecma_minifier/src/compress/optimize/mod.rs

@@ -245,18 +245,23 @@ impl Vars {
         N: for<'aa> VisitMutWith<MultiReplacer<'aa>>,
     {
         let mut changed = false;
-        n.visit_mut_with(&mut MultiReplacer::new(
-            &mut self.simple_functions,
-            true,
-            MultiReplacerMode::OnlyCallee,
-            &mut changed,
-        ));
-        n.visit_mut_with(&mut MultiReplacer::new(
-            &mut self.vars_for_inlining,
-            false,
-            MultiReplacerMode::Normal,
-            &mut changed,
-        ));
+        if !self.simple_functions.is_empty() {
+            n.visit_mut_with(&mut MultiReplacer::new(
+                &mut self.simple_functions,
+                true,
+                MultiReplacerMode::OnlyCallee,
+                &mut changed,
+            ));
+        }
+
+        if !self.vars_for_inlining.is_empty() {
+            n.visit_mut_with(&mut MultiReplacer::new(
+                &mut self.vars_for_inlining,
+                false,
+                MultiReplacerMode::Normal,
+                &mut changed,
+            ));
+        }
 
         changed
     }

node-swc/benches/load.mjs

@@ -0,0 +1 @@
+import '../../index.js';

node-swc/benches/minify.mjs

@@ -0,0 +1,11 @@
+import { minify } from '../../index.js';
+import { promises as fs } from 'fs';
+
+const files = process.argv.slice(2);
+const inputCode = await fs.readFile(files[0], 'utf8');
+
+await minify(inputCode, {
+    compress: true,
+    mangle: true,
+    sourceMap: false,
+})

node-swc/src/binding.d.ts

@@ -3,6 +3,10 @@
 
 /* auto-generated by NAPI-RS */
 
+export interface TransformOutput {
+  code: string
+  map?: string | undefined | null
+}
 export function bundle(confItems: Buffer, signal?: AbortSignal | undefined | null): Promise<{ [index: string]: { code: string, map?: string } }>
 export function minify(code: Buffer, opts: Buffer, signal?: AbortSignal | undefined | null): Promise<TransformOutput>
 export function minifySync(code: Buffer, opts: Buffer): TransformOutput

scripts/bench-node.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -eu
+
+
+echo "Binary load time"
+hyperfine --warmup 10 --runs 5 'node ./node-swc/benches/load.mjs'
+
+echo "Load + minify antd, all core"
+hyperfine --warmup 5 --runs 5 "node ./node-swc/benches/minify.mjs $PWD/crates/swc_ecma_minifier/benches/full/antd.js"
+
+echo "Load + minify antd, 2 core"
+hyperfine --warmup 5 --runs 5 "RAYON_NUM_THREADS=2 node ./node-swc/benches/minify.mjs $PWD/crates/swc_ecma_minifier/benches/full/antd.js"
+