plopfile.js

const { readdirSync, existsSync } = require("fs")
const path = require("path")

const jsPackageNames = getPackageNames("js")

module.exports = function (plop) {
  plop.setGenerator("package", {
    description: "create a new package from scratch",
    prompts: [
      {
        type: "input",
        name: "name",
        message: "What should this package's name be? Ex. eslint-plugin",
      },
      {
        type: "input",
        name: "description",
        message: "What should this package's description be?",
      },
      {
        type: "confirm",
        name: "usedInBrowser",
        message: "Is this package intended for use in the browser?",
      },
    ],
    actions: [
      {
        type: "add",
        path: "packages/{{kebabCase name}}/package.json",
        templateFile: "templates/package.hbs.json",
      },
      {
        type: "add",
        path: "packages/{{kebabCase name}}/README.md",
        templateFile: "templates/README.hbs.md",
      },
      {
        type: "add",
        path: "packages/{{kebabCase name}}/CHANGELOG.md",
        templateFile: "templates/CHANGELOG.hbs.md",
      },
      {
        type: "add",
        path: "packages/{{kebabCase name}}/src/index.js",
        templateFile: "templates/index.hbs",
      },
      {
        type: "add",
        path: "packages/{{kebabCase name}}/src/{{properCase name}}.js",
        templateFile: "templates/my-package.hbs.js",
      },
      {
        type: "add",
        path: "packages/{{kebabCase name}}/src/test/{{properCase name}}.test.js",
        templateFile: "templates/test.hbs.js",
      },
    ],
  })

  plop.setGenerator("docs", {
    description: "Generate root repo documentation",
    prompts: [],
    actions: [
      {
        type: "add",
        path: "README.md",
        templateFile: "templates/ROOT_README.hbs.md",
        force: true,
        data: { jsPackageNames },
      },
    ],
  })
}

function getPackageNames() {
  const packagesPath = path.join(__dirname, "packages")
  return readdirSync(packagesPath).filter(packageName => {
    const packageJSONPath = path.join(packagesPath, packageName, "package.json")
    return existsSync(packageJSONPath)
  })
}