chore: add todolist for benchmark case

benchmark/memory.js

@@ -0,0 +1,57 @@
+const { join } = require('path')
+const { readFileSync } = require('fs')
+const { getHeapStatistics } = require('v8')
+const { Liquid } = require('..')
+
+const engineOptions = {
+  root: __dirname,
+  extname: '.liquid'
+}
+
+const engine = new Liquid(engineOptions)
+
+const SAMPLE_COUNT = 1024
+
+function memory () {
+  console.log('--- memory ---')
+  html()
+  todolist()
+}
+
+function html () {
+  const str = readFileSync(join(__dirname, 'templates/lorem-html.liquid'), 'utf8')
+
+  global.gc()
+  const base = getHeapStatistics().used_heap_size
+  const templates = []
+
+  for (let i = 0; i < SAMPLE_COUNT; i++) {
+    templates.push(engine.parse(str))
+  }
+  global.gc()
+
+  const diff = (getHeapStatistics().used_heap_size - base) / SAMPLE_COUNT
+  console.log(`${h(str.length)} HTML template x ${h(diff)}/instance (${SAMPLE_COUNT} instances sampled)`)
+}
+
+function todolist () {
+  const str = readFileSync(join(__dirname, 'templates/todolist.liquid'), 'utf8')
+
+  global.gc()
+  const base = getHeapStatistics().used_heap_size
+  const templates = []
+
+  for (let i = 0; i < SAMPLE_COUNT; i++) {
+    templates.push(engine.parse(str))
+  }
+  global.gc()
+
+  const diff = (getHeapStatistics().used_heap_size - base) / SAMPLE_COUNT
+  console.log(`${h(str.length)} Todo template x ${h(diff)}/instance (${SAMPLE_COUNT} instances sampled)`)
+}
+
+function h (size) {
+  return (size / 1024).toFixed(3) + ' kB'
+}
+
+module.exports = { memory }