template engine

index.html

<h1><strong style="color:red">Reponse Port : </strong>8003</h1>
<p><strong style="color:red">METHOD: </strong>{{method}}</p>
<p><strong style="color:red">URL: </strong>{{url}}</p>
<p><strong style="color:red">Req HTTP Version: </strong>{{version}}</p>

render.js

const render = (str, o) => {
    const keys = Object.keys(o)
    keys.forEach(c => {
      let field = "{{" + c + "}}"
      let changedOne = field.replace(field, o[c])
      str = str.replace(field, changedOne)
    })
    return str
 }

  const fileStr = readFileSync("index.html", "utf-8")

  const rendered = render(fileStr, {
    method: headers[http2.constants.HTTP2_HEADER_METHOD],
    url: headers[http2.constants.HTTP2_HEADER_PATH],
    version: "2",
    port: 8003
  })