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Python + TypeScriptのmonorepoでpre-commitの設定

Last updated at Posted at 2021-12-29

はじめに

やろうとした時に他にやっている人がいないくて、
色々調べてもなかったので備忘録として。

よくあるやつ

  • TypeScript

Run a TypeScript type check in your pre-commit hook using lint-staged + husky にあるように huskylint-staged の組み合わせを使う

{
  "scripts": {
    "prepare": "husky install"
  },
  "lint-staged": {
    "**/*.{ts,tsx}": [
      "prettier --config .prettierrc --parser typescript --write",
      "git add"
    ],
  },
  "devDependencies": {
    "husky": "^7.0.4",
    "lint-staged": "^12.1.4",
    "prettier": "^2.5.1"
  }
}

  • Python

Python製のツールpre-commitでGitのpre-commit hookを楽々管理!! にあるように pre-commit を使う

repos:
-   repo: https://github.com/psf/black
    rev: 21.12b0
    hooks:
      -   id: black
-   repo: https://gitlab.com/pycqa/flake8
    rev: 4.0.1
    hooks:
      -   id: flake8
          args: ['--extend-ignore=E203', '--max-line-length=88']
-   repo: https://github.com/pycqa/isort
    rev: 5.10.1
    hooks:
      -   id: isort
          args: ['--profile', 'black']

問題点

これらのツールは、 gitpre-commit フックを使っていて、且つこのフックには一つしか設定できないので、どちらかしか使えない。

最初に pre-commit を設定して「動いた!」ってなった後に、 husky を設定すると husky は動くけど pre-commit は動かなくなる。

解決策

Pythonpre-commitTypeScript の設定を追加する。

repos:
-   repo: https://github.com/psf/black
    rev: 21.12b0
    hooks:
      -   id: black
          files: '^backend/.*\.py'
-   repo: https://gitlab.com/pycqa/flake8
    rev: 4.0.1
    hooks:
      -   id: flake8
          files: '^backend/.*\.py'
          args: ['--extend-ignore=E203', '--max-line-length=88']
-   repo: https://github.com/pycqa/isort
    rev: 5.10.1
    hooks:
      -   id: isort
          files: '^backend/.*\.py'
          args: ['--profile', 'black']
-   repo: https://github.com/pre-commit/mirrors-prettier
    rev: v2.5.1
    hooks:
      -   id: prettier
          files: '^frontend/.*\.(ts|tsx)'
          args: ['--parser', 'typescript', '--write']

Typescripthuskylint-stagedPython を追加することもできるはずなのだけど、
なぜか上手く動かない。。。

{
  "scripts": {
    "prepare": "husky install"
  },
  "lint-staged": {
    "**/*.{ts,tsx}": [
      "prettier --config .prettierrc --parser typescript --write",
      "git add"
    ],
    "**/*.py": [
      "pre-commit",
      "flake8 --extend-ignore=E203 --max-line-length=88",
      "isort --profile black",
      "git add"
    ]
  },
  "devDependencies": {
    "husky": "^7.0.4",
    "lint-staged": "^12.1.4",
    "prettier": "^2.5.1"
  }
}

あと、 pre-commit は設計思想として multi-language をあげているので
pre-commit に対応を追加するのがよさそう。

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