remove-some-branches.js

const { exec } = require('child_process');
const { MultiSelect } = require('enquirer');

runCommand('git branch', (result) => {
    const branches = parseBranches(result);

    const prompt = new MultiSelect({
        name: 'Branches',
        message: 'Select branches to remove',
        choices: branches.map((b) => {
            return {
                name: b
            };
        })
    });

    prompt.run()
        .then(deleteBranches)
        .catch(console.error);
});

function parseBranches(stdout) {
    if (!stdout) {
        return [];
    }

    const lines = stdout.trim().split('\n');
    return lines.map((line) => {
        return line.trim().replace(/^\*\s*/, '');
    }).filter((line) => line !== '' && line !== 'master' && line !== 'main');
}

function deleteBranches(branchList) {
    const deleteCommand = `git branch -D ${branchList.join(' ')}`;
    console.log(deleteCommand);

    runCommand(deleteCommand, (result) => {
        console.log(result);
    });
}

function runCommand(command, callback) {
    exec(command, (error, stdout, stderr) => {
        if (error) {
            console.log(`error: ${error.message}`);
            return;
        }

        if (stderr) {
            console.log(`stderr: ${stderr}`);
            return;
        }

        callback(stdout);
    });
}