perf: add cross-engines benchmark

benchmark/demo.js

@@ -1,8 +1,10 @@
 const Benchmark = require('benchmark')
 const { Liquid } = require('..')
+const ctx = require('./data/todolist.json')
+const { resolve } = require('path')
 
 const engine = new Liquid({
-  root: __dirname,
+  root: resolve(__dirname, 'templates'),
   extname: '.liquid'
 })
 
@@ -17,28 +19,14 @@ engine.registerTag('header', {
   }
 })
 
-const ctx = {
-  todos: ['fork and clone', 'make it better', 'make a pull request'],
-  title: 'Welcome to liquidjs!'
-}
-
-const template = `
-{%header content: "welcome to liquid" | capitalize%}
-
-<ul>
-  {% for todo in todos %}
-  <li>{{forloop.index}} - {{todo}}</li>
-  {% endfor %}
-</ul>
-`
-
 function demo () {
-  console.log('--- demo ---')
+  console.log('         demo')
+  console.log('------------------------')
   return new Promise(resolve => {
     new Benchmark.Suite('demo')
       .add('demo', {
         defer: true,
-        fn: d => engine.parseAndRender(template, ctx).then(x => d.resolve(x))
+        fn: d => engine.renderFile('todolist', ctx).then(x => d.resolve(x))
       })
       .on('cycle', event => console.log(String(event.target)))
       .on('complete', resolve)