chore: add node benchmarks

bench/index.js

@@ -0,0 +1,61 @@
+const { Suite } = require('benchmark');
+const classnames = require('classnames');
+const classcat = require('classcat');
+const clsx = require('../dist/clsx');
+const old = require('clsx');
+
+function bench(name, ...args) {
+	console.log(`\n# ${name}`);
+	new Suite()
+		.add('classcat*   ', () => classcat.apply(classcat, [args]))
+		.add('classnames  ', () => classnames.apply(classnames, args))
+		.add('clsx (prev) ', () => old.apply(old, args))
+		.add('clsx        ', () => clsx.apply(clsx, args))
+		.on('cycle', e => console.log('  ' + e.target))
+		.run();
+}
+
+bench(
+	'Strings',
+	'foo', '', 'bar', 'baz', 'bax', 'bux'
+);
+
+bench(
+	'Objects',
+	{ foo:true, bar:true, bax:true, bux:false },
+	{ baz:true, bax:false, bux:true }
+);
+
+bench(
+	'Arrays',
+	['foo', 'bar'],
+	['baz', 'bax', 'bux']
+);
+
+bench(
+	'Nested Arrays',
+	['foo', ['bar']],
+	['baz', ['bax', ['bux']]]
+);
+
+bench(
+	'Nested Arrays w/ Objects',
+	['foo', { bar:true, bax:true, bux:false }],
+	['bax', { bax:false, bux:true }]
+);
+
+bench(
+	'Mixed',
+	'foo', 'bar',
+	{ bax:true, bux:false },
+	['baz', { bax:false, bux:true }]
+);
+
+bench(
+	'Mixed (Bad Data)',
+	'foo', 'bar',
+	undefined, null, NaN,
+	() => {},
+	{ bax:true, bux:false, 123:true },
+	['baz', { bax:false, bux:true, abc:null }, {}]
+);

bench/package.json

@@ -0,0 +1,9 @@
+{
+  "private": true,
+  "devDependencies": {
+    "benchmark": "^2.1.4",
+    "classcat": "^3.2.5",
+    "classnames": "^2.2.6",
+    "clsx": "1.0.3"
+  }
+}