Auto-Fix On Save

Let’s look at how to use ESLint to keep our Vue JavaScript clean looking. Specifically, we’ll use antfu’s eslint-config which are nice presets including auto-fix on save and a nice one line CLI install tool.

• install VSCode extension ESLint
• let’s say your app is in ~/app
• cd ~/app
• npm init (hit enter for all prompts)
• pnpm dlx @antfu/eslint-config@latest
  • uncommitted changes, continue? yes
  • framework: Vue
  • extra utils: none
  • update .vscode/settings.json: yes
• npm install
• in ~/app/.vscode/settings.json, change the codeActionsOnSave section (lines 7-10) to:

  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": "always",
    "source.organizeImports": "always"
  },

• in ~/app/package.json
  • you should see some red underlines for ESLint violations
  • hit command + s to save and you should see ESLint automatically fix the issues 🎉
• add these lines to the scripts section of ~/app/package.json:

"lint": "npx eslint .",
"lint:fix": "npx eslint . --fix"

• now you can run npm run lint to run the linter
• and you can run npm run lint:fix to run the linter and autofix