Simple build system for babel

package.json

{
  "main": "dist/index.js",
  "scripts": {
    "transpile": "babel src/index.js",
    "prebuild": "shx mkdir -p dist",
    "build": "npm run transpile -- -o dist/index.js",
    "start:dev": "babel-node src/index.js",
    "watch": "nodemon -w src/* -x \"npm run build &> /dev/null && node .\""
  },
  "devDependencies": {
    "@babel/cli": "^7.0.0-beta.41",
    "@babel/core": "^7.0.0-beta.41",
    "@babel/preset-env": "^7.0.0-beta.41",
    "@babel/preset-stage-0": "^7.0.0-beta.41",
    "shx": "^0.2.2"
  }
}