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yarn run watchでwatchifyして素早くjsをビルドできるようにする

Last updated at Posted at 2016-04-30

やりたいこと

  • browserifyでjsをモジュール化できるよういしたい
  • babelを使ってES2015で書きたい
  • Reactも使いたい
  • gulpはめんどい
  • 変更を監視してビルドしたい
  • 時間のかかるビルドは嫌だ

手順

  • nodeの6系以上をインストールしておいて npm i -g yarn でyarnも入れておく
  • プロジェクトフォルダを作成する mkdir sample-folder && cd sample-folder
  • yarn init (適当にEnter連打)
  • yarn add browserify babelify watchify babel-preset-es2015 babel-preset-react react react-dom babel-plugin-transform-inline-environment-variables babel-polyfill prop-types
  • package.jsonのscriptsに以下を追加
    "watch": "NODE_ENV=development watchify js/all.js -o js/bundle.js --extension=.jsx -v -t [ babelify --presets [ es2015 react ] --plugins [ transform-inline-environment-variables ] ]"
  • コードを書く前に npm run watch しておく
  • 本番用にビルドするscript
    "build": "NODE_ENV=production browserify js/all.js -o js/bundle.js --extension=.jsx -v -t [ babelify --presets [ es2015 react ] --plugins [ transform-inline-environment-variables ] ]"

サンプルのpackage.json

package.json
{
  "name": "sample-folder",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "babel-plugin-transform-inline-environment-variables": "^0.0.2",
    "babel-polyfill": "^6.23.0",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "babelify": "^7.3.0",
    "browserify": "^14.3.0",
    "prop-types": "^15.5.8",
    "react": "^15.5.4",
    "react-dom": "^15.5.4",
    "watchify": "^3.9.0"
  },
  "scripts": {
    "watch": "NODE_ENV=development watchify js/all.js -o js/bundle.js --extension=.jsx -v -t [ babelify --presets [ es2015 react ] --plugins [ transform-inline-environment-variables ] ]",
    "build": "NODE_ENV=production browserify js/all.js --extension=.jsx -o js/bundle.js -v -t [ babelify --presets [ es2015 react ] --plugins [ transform-inline-environment-variables ] ]"
  }
}
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