How to distribute files into folders when building production in parcel?

Question

css

By default, when building production in parcel, all files (js, css, html, fonts, pictures, etc.) are all distributed into one folder. How can all this be divided into folders?
package.json

{
  "name": "parcel",
  "version": "1.0.0",
  "description": "",
  "main": "js/main.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "parcel index.pug --open",
    "build": "parcel build index.pug -d docs --public-url ./"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "cssnano": "^4.1.10",
    "pug": "^2.0.4",
    "stylus": "^0.54.7"
  },
  "dependencies": {
    "bootstrap": "^4.3.1",
    "components": "^0.1.0",
    "jquery": "^3.4.1",
    "plugins": "^0.4.2",
    "popper.js": "^1.15.0"
  }
}