perf: add cross-engines benchmark

benchmark/engines/handlebars.js

@@ -0,0 +1,33 @@
+const handlebars = require('handlebars')
+const { readFileSync } = require('fs')
+const { join } = require('path')
+
+handlebars.registerPartial(
+  'todo-icon',
+  readFileSync(join(__dirname, '../templates/todo-icon.hbs'), 'utf8')
+)
+
+handlebars.registerHelper('concat', function (...args) {
+  return args.filter(x => typeof x === 'string').join('')
+})
+
+handlebars.registerHelper('url', function (path) {
+  return `http://example.com${path}`
+})
+
+handlebars.registerHelper('inc', function (num) {
+  return Number(num) + 1
+})
+
+handlebars.registerHelper('capitalize', function (str) {
+  return str[0].toUpperCase() + str.slice(1).toLowerCase()
+})
+
+handlebars.registerHelper('upcase', function (str) {
+  return str.toUpperCase()
+})
+
+module.exports = {
+  load: path => handlebars.compile(readFileSync(path + '.hbs', 'utf8')),
+  render: (tpl, data) => tpl(data)
+}