Upgrade de Dependências

Domine upgrades de versões principais de dependências, análise de compatibilidade, estratégias de upgrade em fases e abordagens de testes abrangentes.

Quando Usar Esta Habilidade

• Upgrade de versões principais de frameworks
• Atualização de dependências com vulnerabilidades de segurança
• Modernização de dependências legadas
• Resolução de conflitos de dependências
• Planejamento de caminhos de upgrade incrementais
• Teste de matrizes de compatibilidade
• Automação de atualizações de dependências

Revisão de Versionamento Semântico

MAJOR.MINOR.PATCH (e.g., 2.3.1)

MAJOR: Breaking changes
MINOR: New features, backward compatible
PATCH: Bug fixes, backward compatible

^2.3.1 = >=2.3.1 <3.0.0 (minor updates)
~2.3.1 = >=2.3.1 <2.4.0 (patch updates)
2.3.1 = exact version

Análise de Dependências

Auditoria de Dependências

# npm
npm outdated
npm audit
npm audit fix

# yarn
yarn outdated
yarn audit

# Check for major updates
npx npm-check-updates
npx npm-check-updates -u  # Update package.json

Análise da Árvore de Dependências

# See why a package is installed
npm ls package-name
yarn why package-name

# Find duplicate packages
npm dedupe
yarn dedupe

# Visualize dependencies
npx madge --image graph.png src/

Matriz de Compatibilidade

// compatibility-matrix.js
const compatibilityMatrix = {
  react: {
    "16.x": {
      "react-dom": "^16.0.0",
      "react-router-dom": "^5.0.0",
      "@testing-library/react": "^11.0.0",
    },
    "17.x": {
      "react-dom": "^17.0.0",
      "react-router-dom": "^5.0.0 || ^6.0.0",
      "@testing-library/react": "^12.0.0",
    },
    "18.x": {
      "react-dom": "^18.0.0",
      "react-router-dom": "^6.0.0",
      "@testing-library/react": "^13.0.0",
    },
  },
};

function checkCompatibility(packages) {
  // Validate package versions against matrix
}

Estratégia de Upgrade em Fases

Fase 1: Planejamento

# 1. Identify current versions
npm list --depth=0

# 2. Check for breaking changes
# Read CHANGELOG.md and MIGRATION.md

# 3. Create upgrade plan
echo "Upgrade order:
1. TypeScript
2. React
3. React Router
4. Testing libraries
5. Build tools" > UPGRADE_PLAN.md

Fase 2: Atualizações Incrementais

# Don't upgrade everything at once!

# Step 1: Update TypeScript
npm install typescript@latest

# Test
npm run test
npm run build

# Step 2: Update React (one major version at a time)
npm install react@17 react-dom@17

# Test again
npm run test

# Step 3: Continue with other packages
npm install react-router-dom@6

# And so on...

Fase 3: Validação

// tests/compatibility.test.js
describe("Dependency Compatibility", () => {
  it("should have compatible React versions", () => {
    const reactVersion = require("react/package.json").version;
    const reactDomVersion = require("react-dom/package.json").version;

    expect(reactVersion).toBe(reactDomVersion);
  });

  it("should not have peer dependency warnings", () => {
    // Run npm ls and check for warnings
  });
});

Tratamento de Mudanças Quebradoras (Breaking Changes)

Identificando Mudanças Quebradoras

# Check the changelog directly
curl https://raw.githubusercontent.com/facebook/react/master/CHANGELOG.md

Codemod para Correções Automatizadas

# Run jscodeshift with transform URL
npx jscodeshift -t <transform-url> <path>

# Example: Rename unsafe lifecycle methods
npx jscodeshift -t https://raw.githubusercontent.com/reactjs/react-codemod/master/transforms/rename-unsafe-lifecycles.js src/

# For TypeScript files
npx jscodeshift -t https://raw.githubusercontent.com/reactjs/react-codemod/master/transforms/rename-unsafe-lifecycles.js --parser=tsx src/

# Dry run to preview changes
npx jscodeshift -t https://raw.githubusercontent.com/reactjs/react-codemod/master/transforms/rename-unsafe-lifecycles.js --dry src/

Script de Migração Personalizado

// migration-script.js
const fs = require("fs");
const glob = require("glob");

glob("src/**/*.tsx", (err, files) => {
  files.forEach((file) => {
    let content = fs.readFileSync(file, "utf8");

    // Replace old API with new API
    content = content.replace(
      /componentWillMount/g,
      "UNSAFE_componentWillMount",
    );

    // Update imports
    content = content.replace(
      /import { Component } from 'react'/g,
      "import React, { Component } from 'react'",
    );

    fs.writeFileSync(file, content);
  });
});

Estratégia de Testes

Testes Unitários

// Garanta que os testes passem antes e depois do upgrade
npm run test

// Atualize utilitários de teste, se necessário

…