Git Prune

git-prune

#!/usr/bin/env node

const shell = require('shelljs')
const inquirer = require('inquirer')
const chalk = require('chalk')

/**
 * Gets a list of Git branches
 * 
 * @return {Array[String]}
 */
const getBranches = () => {
    
    const cmd = [
        'git for-each-ref',
        '--sort=-committerdate',
        'refs/heads',
        '--format="%(refname:short)"'
    ].join(' ')
    
    const res = shell.exec(cmd, { silent:true })
    
    if (res.code !== 0) {
        shell.echo('Error: could not list Git branches')
        shell.exit(1)
        return process.exit(1)
    }
    
    return res
        .split('\n')
        .filter(Boolean)
        .filter(it => !['master', 'develop'].includes(it))
    
}

const askForBranch = branches => {
    
    const questions = [
        {
            type: 'checkbox',
            name: 'queue',
            message: 'Which branches should I delete?',
            choices: branches,
            pageSize: 20
        }
    ]
    
    return inquirer.prompt(questions)
    
}

const confirmDeletion = queue => {
    
    const questions = [
        {
            type: 'confirm',
            name: 'hasConfirmed',
            message: 'Really delete these branches?\n' + queue.join('\n'),
            default: false
        }
    ]
    
    return inquirer.prompt(questions)
    
}

const deleteBranch = name => {
    
    const cmd = `git branch -D ${name}`
    const res = shell.exec(cmd, { silent:true })
    
    return (res.code === 0)
    
}

const start = async () => {
    
    const branches = getBranches()
    const { queue } = await askForBranch(branches)
    
    if (!queue || queue.length < 1) {
        console.info('Cancelled - no branches selected')
        return process.exit(0)
    }
    
    const { hasConfirmed } = await confirmDeletion(queue)
    
    if (!hasConfirmed) {
        console.info('Cancelled - no branches deleted')
        return process.exit(0)
    }
    
    console.info('Deleting', queue.length, 'branches...')
    
    const success = chalk.green.bold('SUCCESS')
    const failure = chalk.red.bold('FAILURE')
    
    const results = queue.map(it => {
        const msg = deleteBranch(it) ? success : failure
        return `${msg} ${it}`
    })
    
    console.info(results.join('\n'))
    
}

start()