Code merge process

Team collaboration standards and code merging processes are key aspects of front-end development that ensure code quality and project stability. A well-designed collaboration workflow can reduce conflicts and improve efficiency, while standardized code merging helps maintain the stability of the main branch.

Team Collaboration Standards

Branch Management Strategy

Adopting branch management strategies like Git Flow or GitHub Flow is fundamental for team collaboration. Git Flow is suitable for long-term maintenance projects, while GitHub Flow is better suited for agile development with continuous delivery.

# Git Flow branch example
git checkout -b feature/user-authentication
git checkout -b hotfix/login-bug

Code Commit Standards

Use the Conventional Commits specification for commit messages to facilitate changelog generation and automated version management.

git commit -m "feat(auth): add JWT authentication"
git commit -m "fix(login): correct password validation"

Code Review Process

The code review process should follow these principles:

1. Every commit should create a Pull Request
2. Approval from at least 1-2 team members is required
3. Use automated tools to check code quality

// Example: ESLint configuration
module.exports = {
  extends: ['airbnb', 'prettier'],
  rules: {
    'react/prop-types': 'off',
    'no-console': 'warn'
  }
};

Code Merging Process

Pre-Merge Checks

Before merging code, ensure:

1. All tests pass
2. Code coverage meets standards
3. No ESLint errors
4. All code review feedback has been addressed

# Example pre-merge check script
npm run test
npm run lint
npm run coverage

Merge Strategy Selection

Choose an appropriate merge strategy based on project needs:

• Regular merge (merge): Preserves complete history
• Rebase merge (rebase): Maintains linear history
• Squash merge (squash): Simplifies commit history

# Rebase merge example
git checkout feature/new-ui
git rebase main
git checkout main
git merge feature/new-ui

Conflict Resolution Process

When merge conflicts occur:

1. Pull the latest code
2. Resolve conflicts locally
3. Rerun tests
4. Resubmit for review

// Conflict example: Both branches modified the same file
<<<<<<< HEAD
const API_URL = 'https://api.example.com/v1';
=======
const API_URL = process.env.API_URL || 'https://dev.api.example.com';
>>>>>>> feature/new-config

Automated Tool Integration

CI/CD Pipeline

Configure an automated pipeline that includes:

1. Code checks
2. Unit tests
3. E2E tests
4. Build and deployment

# GitHub Actions example
name: CI
on: [push, pull_request]
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - run: npm install
      - run: npm test

Code Quality Gates

Set quality gates to ensure merged code meets standards:

• Test coverage ≥80%
• No high-risk vulnerabilities
• Code complexity meets requirements

// package.json configuration example
{
  "husky": {
    "hooks": {
      "pre-commit": "lint-staged",
      "pre-push": "npm test"
    }
  }
}

Special Scenario Handling

Emergency Fix Process

For critical production issues:

1. Create a hotfix branch from the main branch
2. Quickly fix and test
3. Merge back into the main and development branches

# Emergency fix process
git checkout -b hotfix/critical-bug main
# Fix code...
git checkout main
git merge --no-ff hotfix/critical-bug
git checkout develop
git merge main

Large Feature Development

For large features requiring extended development:

1. Use a feature branch
2. Regularly sync with changes from the main branch
3. Break into multiple small PRs for gradual merging

// Example: Feature flag management
export const FEATURE_FLAGS = {
  NEW_CHECKOUT: process.env.REACT_APP_NEW_CHECKOUT === 'true'
};

Documentation and Knowledge Sharing

Change Log Maintenance

Keep CHANGELOG.md updated to record all significant changes:

## [1.2.0] - 2023-05-15
### Added
- Added user permission management system
- Added dark mode support

### Fixed
- Fixed shopping cart quantity sync issue

Team Knowledge Base

Maintain internal documentation for:

• Common issue solutions
• Technical decision records
• Architecture design documents

# Technical Decision Record: State Management Solution
## Background
Need to unify project state management...

## Options Considered
1. Redux
2. Context API
3. Zustand

## Decision
Chose Zustand because...

Continuous Optimization and Feedback

Regularly review merge process efficiency and gather team feedback for adjustments. Evaluate using the following metrics:

• Average merge wait time
• Conflict occurrence rate
• Code rollback frequency

// Example: Merge data analysis
const mergeMetrics = {
  avgMergeTime: '2.5h',
  conflictRate: '8%',
  rollbackCount: 2
};