How to optimize Prettier performance and what are the best practices?

Prettier Performance Optimization and Best Practices

When using Prettier for large-scale project development, performance optimization and best practices are crucial for improving development efficiency.

Performance Optimization Strategies

1. Use lint-staged to only format staged files

json
{
  "lint-staged": {
    "*.{js,jsx,ts,tsx,json,css,scss,md}": [
      "prettier --write"
    ]
  }
}

2. Configure .prettierignore to ignore unnecessary files

shell
node_modules
dist
build
coverage
*.min.js
*.min.css
package-lock.json
yarn.lock
pnpm-lock.yaml

3. Use caching mechanism Prettier 2.0+ has built-in caching, which can significantly improve repeated formatting speed:

bash
npx prettier --write --cache "**/*.{js,jsx,ts,tsx}"

4. Limit formatting scope Avoid formatting the entire project, only format modified files:

bash
npx prettier --write "src/**/*.{js,jsx,ts,tsx}"

Best Practices

1. Unified Team Configuration

• Commit .prettierrc to version control
• Lock Node version using engines field in package.json
• Document Prettier configuration in README

2. Editor Integration

• VS Code: Install Prettier extension, configure formatOnSave
• WebStorm: Built-in Prettier support
• Vim/Neovim: Use coc-prettier or vim-prettier

3. Collaborate with ESLint

javascript
// .eslintrc.js
module.exports = {
  extends: [
    'eslint:recommended',
    'plugin:prettier/recommended' // Prettier as ESLint rule
  ]
};

4. CI/CD Integration

• Add Prettier check in PR checks
• Use --check mode instead of --write mode
• Provide clear fix instructions on failure

5. Version Management

• Lock Prettier version to avoid format inconsistencies
• Regularly update Prettier version
• Maintain version change log

Common Problem Solutions

1. Formatting Conflicts

• Use eslint-config-prettier to disable conflicting rules
• Regularly sync team configuration

2. Performance Issues

• Use --cache option
• Reduce number of formatted files
• Upgrade to latest version

3. Configuration Inheritance

• Use overrides to set different rules for different file types
• Use shared configuration packages in monorepo

By following these best practices, you can fully leverage Prettier's advantages and improve team development efficiency and code quality.