# 全局安裝
npm install -g depcheck

# 或在項目中安裝
npm install depcheck --save-dev

# 運行檢查
npx depcheck

{
  "ignores": ["eslint-*", "babel-*"],
  "skip-missing": false
}

# 安裝
npm install -g npm-check

# 運行檢查未使用的包
npm-check --unused

# 在終端中運行（Linux/Mac）
grep -r "import.*from" src/ | grep -o "from ['\"].*['\"]" | cut -d "'" -f2 | cut -d '"' -f2 | sort | uniq

# Windows PowerShell
Get-ChildItem -Recurse -Filter "*.vue" -Path src | Select-String -Pattern "import.*from" | ForEach-Object { $_ -match "from ['""](.*?)['""]" | Out-Null; $matches[1] } | Sort-Object -Unique

const fs = require('fs');
const path = require('path');
const { execSync } = require('child_process');

// 讀取package.json
const packageJson = JSON.parse(fs.readFileSync('package.json', 'utf8'));
const deps = Object.keys(packageJson.dependencies || {});
const devDeps = Object.keys(packageJson.devDependencies || {});

// 收集所有import語句
function collectImports(dir) {
  const imports = new Set();
  
  function walk(currentPath) {
    const items = fs.readdirSync(currentPath);
    
    items.forEach(item => {
      const fullPath = path.join(currentPath, item);
      const stat = fs.statSync(fullPath);
      
      if (stat.isDirectory() && !item.includes('node_modules')) {
        walk(fullPath);
      } else if (stat.isFile() && /\.(js|ts|vue)$/.test(item)) {
        const content = fs.readFileSync(fullPath, 'utf8');
        const importMatches = content.match(/from ['"]([^'"]+)['"]/g) || [];
        const requireMatches = content.match(/require\(['"]([^'"]+)['"]\)/g) || [];
        
        [...importMatches, ...requireMatches].forEach(match => {
          const pkgName = match.replace(/from ['"]|['"]|require\(['"]|['"]\)/g, '');
          if (!pkgName.startsWith('.') && !pkgName.startsWith('/')) {
            imports.add(pkgName.split('/')[0]);
          }
        });
      }
    });
  }
  
  walk(dir);
  return imports;
}

const usedImports = collectImports('src');
console.log('未使用的依賴：');
deps.forEach(dep => {
  if (!usedImports.has(dep)) {
    console.log(`- ${dep}`);
  }
});

npm install webpack-bundle-analyzer --save-dev

const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;

module.exports = {
  configureWebpack: {
    plugins: [
      new BundleAnalyzerPlugin()
    ]
  }
}

# 先安全移除
npm uninstall <package-name>
# 測試項目是否正常
npm run serve