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wireitの利用例

Last updated at Posted at 2022-06-10

wireit

wireitは設定だけでscriptsの並列処理ができる事が魅力です。

  "scripts": {
    "vercel": "echo 1",
    "wrangler": "echo 2",
    "firebase_host": "echo 3"
  },

通常、↑の実行は次のように行っています↓

npm run vercel 
npm run wrangler
npm run firebase_host

wireitを利用したnpm script例にするとscript自体は冗長化しますが、
並行実行ができます。

  "scripts": {
    "build": "wireit",
    "vercel": "wireit",
    "wrangler": "wireit",
    "netlify": "wireit",
    "firebase_host": "wireit"
  },
  "wireit": {
    "build": {"command": "ls ", "dependencies":["vercel", "wrangler", "netlify", "firebase_host"]},
    "vercel": {"command": "echo 1"},
    "firebase_host" : {"echo 2"},
    "wrangler": {"command": "echo 3"},
    "netlify": {"command": "ls"}
  }

↑の実行は次↓のように行います。(4並列で動かしてみます)

export WIREIT_PARALLEL=4 
npm run build

パラレル実行ができることは魅力ですね
https://github.com/google/wireit#parallelism

所感

npm scriptsへのwireit適応による嬉しさは、はGulpによりparallel実行がもたらされた時のちょっと嬉しい感覚に似ています。ただ、適応後のコードは少し冗長になるかもしれません。

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