Comprehensive Guide to git-branch-is: A Modern Tool for Git Branch Analysis

git-branch-is is a powerful utility designed to help you determine whether your Git repository’s current branch matches a specified pattern. This guide will introduce you to git-branch-is and explore its extensive API offerings, complete with practical examples and an application integration illustration.

Installation

  npm install git-branch-is --save

Basic API Usage

isBranch

The isBranch function checks if the current branch matches the specified pattern.

  const gitBranchIs = require('git-branch-is');
  
  gitBranchIs('main').then((result) => {
    console.log(result); // true if the branch is 'main'
  });

Function with Options

Advanced usage with options to customize behavior.

  gitBranchIs({
    branch: 'develop',
    cwd: '/path/to/repo'
  }).then((result) => {
    console.log(result); // true if the branch is 'develop' in the specified repository path
  });

Running with Promises

  gitBranchIs('feature/*')
    .then((isFeatureBranch) => {
      if (isFeatureBranch) {
        console.log('You are on a feature branch.');
      }
    })
    .catch((error) => {
      console.error('An error occurred:', error);
    });

Example Application Integration

Here’s how you might incorporate git-branch-is into a broader application:

  const express = require('express');
  const gitBranchIs = require('git-branch-is');

  const app = express();

  app.get('/branch', (req, res) => {
    gitBranchIs('main').then((isMain) => {
      if (isMain) {
        res.send('You are on the main branch!');
      } else {
        res.send('This is not the main branch.');
      }
    }).catch((error) => {
      res.status(500).send('Error checking branch');
    });
  });

  app.listen(3000, () => {
    console.log('Server running on port 3000');
  });

This example uses git-branch-is within an Express.js application to determine whether the current branch is ‘main’ when a GET request is made to /branch.

Conclusion

Whether you are verifying branch names or integrating with CI/CD pipelines, git-branch-is offers a straightforward and effective solution for branch analysis in Git. It is simple to set up, intuitive to use, and highly adaptable to numerous workflows.

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